sql_yacc.yy 205 KB
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/* Copyright (C) 2000-2003 MySQL AB
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   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
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   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
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   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */

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/* sql_yacc.yy */
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%{
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/* thd is passed as an arg to yyparse(), and subsequently to yylex().
** The type will be void*, so it must be  cast to (THD*) when used.
** Use the YYTHD macro for this.
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*/
#define YYPARSE_PARAM yythd
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#define YYLEX_PARAM yythd
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#define YYTHD ((THD *)yythd)

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#define MYSQL_YACC
#define YYINITDEPTH 100
#define YYMAXDEPTH 3200				/* Because of 64K stack */
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#define Lex (YYTHD->lex)
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#define Select Lex->current_select
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#include "mysql_priv.h"
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#include "slave.h"
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#include "lex_symbol.h"
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#include "item_create.h"
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#include "sp_head.h"
#include "sp_pcontext.h"
#include "sp_rcontext.h"
#include "sp.h"
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#include <myisam.h>
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#include <myisammrg.h>
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int yylex(void *yylval, void *yythd);
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const LEX_STRING null_lex_str={0,0};

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#define yyoverflow(A,B,C,D,E,F) {ulong val= *(F); if(my_yyoverflow((B), (D), &val)) { yyerror((char*) (A)); return 2; } else { *(F)= (YYSIZE_T)val; }}
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#define WARN_DEPRECATED(A,B) \
  push_warning_printf(((THD *)yythd), MYSQL_ERROR::WARN_LEVEL_WARN, \
		      ER_WARN_DEPRECATED_SYNTAX, \
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		      ER(ER_WARN_DEPRECATED_SYNTAX), (A), (B));
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/* Helper for parsing "IS [NOT] truth_value" */
inline Item *is_truth_value(Item *A, bool v1, bool v2)
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{
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  return new Item_func_if(create_func_ifnull(A,
	new Item_int((char *) (v2 ? "TRUE" : "FALSE"), v2, 1)),
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	new Item_int((char *) (v1 ? "TRUE" : "FALSE"), v1, 1),
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	new Item_int((char *) (v1 ? "FALSE" : "TRUE"),!v1, 1));
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}

%}
%union {
  int  num;
  ulong ulong_num;
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  ulonglong ulonglong_number;
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  LEX_STRING lex_str;
  LEX_STRING *lex_str_ptr;
  LEX_SYMBOL symbol;
  Table_ident *table;
  char *simple_string;
  Item *item;
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  Item_num *item_num;
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  List<Item> *item_list;
  List<String> *string_list;
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  String *string;
  key_part_spec *key_part;
  TABLE_LIST *table_list;
  udf_func *udf;
  LEX_USER *lex_user;
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  struct sys_var_with_base variable;
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  Key::Keytype key_type;
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  enum ha_key_alg key_alg;
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  enum db_type db_type;
  enum row_type row_type;
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  enum ha_rkey_function ha_rkey_mode;
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  enum enum_tx_isolation tx_isolation;
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  enum Cast_target cast_type;
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  enum Item_udftype udf_type;
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  CHARSET_INFO *charset;
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  thr_lock_type lock_type;
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  interval_type interval, interval_time_st;
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  timestamp_type date_time_type;
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  st_select_lex *select_lex;
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  chooser_compare_func_creator boolfunc2creator;
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  struct sp_cond_type *spcondtype;
  struct { int vars, conds, hndlrs, curs; } spblock;
  sp_name *spname;
  struct st_lex *lex;
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}

%{
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bool my_yyoverflow(short **a, YYSTYPE **b, ulong *yystacksize);
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%}

%pure_parser					/* We have threads */

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%right	BINARY COLLATE_SYM
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%type <lex_str>
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        IDENT IDENT_QUOTED TEXT_STRING DECIMAL_NUM FLOAT_NUM NUM LONG_NUM HEX_NUM
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	LEX_HOSTNAME ULONGLONG_NUM field_ident select_alias ident ident_or_text
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        UNDERSCORE_CHARSET IDENT_sys TEXT_STRING_sys TEXT_STRING_literal
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	NCHAR_STRING opt_component key_cache_name
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        sp_opt_label BIN_NUM
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%type <lex_str_ptr>
	opt_table_alias

%type <table>
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	table_ident table_ident_nodb references xid
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%type <simple_string>
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	remember_name remember_end opt_ident opt_db text_or_password
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	opt_constraint constraint ident_or_empty
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%type <string>
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	text_string opt_gconcat_separator
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%type <num>
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	type int_type real_type order_dir opt_field_spec lock_option
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	udf_type if_exists opt_local opt_table_options table_options
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        table_option opt_if_not_exists opt_no_write_to_binlog opt_var_type
        opt_var_ident_type delete_option opt_temporary all_or_any opt_distinct
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        opt_ignore_leaves fulltext_options spatial_type union_option
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        start_transaction_opts opt_chain opt_release
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%type <ulong_num>
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	ULONG_NUM raid_types merge_insert_types
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%type <ulonglong_number>
	ulonglong_num
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%type <lock_type>
	replace_lock_option opt_low_priority insert_lock_option load_data_lock

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%type <item>
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	literal text_literal insert_ident order_ident
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	simple_ident select_item2 expr opt_expr opt_else sum_expr in_sum_expr
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	bool_term bool_factor bool_test bool_pri 
	predicate bit_expr bit_term bit_factor value_expr term factor
	table_wild simple_expr udf_expr
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	using_list expr_or_default set_expr_or_default interval_expr
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	param_marker singlerow_subselect singlerow_subselect_init
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	exists_subselect exists_subselect_init geometry_function
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	signed_literal now_or_signed_literal opt_escape
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	sp_opt_default
	simple_ident_nospvar simple_ident_q
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%type <item_num>
	NUM_literal
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%type <item_list>
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	expr_list udf_expr_list udf_expr_list2 when_list
	ident_list ident_list_arg
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%type <key_type>
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	key_type opt_unique_or_fulltext constraint_key_type
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%type <key_alg>
	key_alg opt_btree_or_rtree

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%type <string_list>
	key_usage_list

%type <key_part>
	key_part

%type <table_list>
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	join_table_list  join_table
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        table_factor table_ref
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%type <date_time_type> date_time_type;
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%type <interval> interval

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%type <interval_time_st> interval_time_st

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%type <db_type> storage_engines
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%type <row_type> row_types

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%type <tx_isolation> isolation_types
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%type <ha_rkey_mode> handler_rkey_mode

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%type <cast_type> cast_type
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%type <udf_type> udf_func_type

%type <symbol> FUNC_ARG0 FUNC_ARG1 FUNC_ARG2 FUNC_ARG3 keyword

%type <lex_user> user grant_user

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%type <charset>
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	opt_collate
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	charset_name
	charset_name_or_default
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	old_or_new_charset_name
	old_or_new_charset_name_or_default
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	collation_name
	collation_name_or_default
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%type <variable> internal_variable_name

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%type <select_lex> in_subselect in_subselect_init

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%type <boolfunc2creator> comp_op

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%type <NONE>
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	query verb_clause create change select do drop insert replace insert2
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	insert_values update delete truncate rename
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	show describe load alter optimize keycache preload flush
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	reset purge begin commit rollback savepoint release
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	slave master_def master_defs master_file_def slave_until_opts
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	repair restore backup analyze check start checksum
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	field_list field_list_item field_spec kill column_def key_def
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	keycache_list assign_to_keycache preload_list preload_keys
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	select_item_list select_item values_list no_braces
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	opt_limit_clause delete_limit_clause fields opt_values values
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	procedure_list procedure_list2 procedure_item
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	when_list2 expr_list2 udf_expr_list3 handler
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	opt_precision opt_ignore opt_column opt_restrict
	grant revoke set lock unlock string_list field_options field_option
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	field_opt_list opt_binary table_lock_list table_lock
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	ref_list opt_on_delete opt_on_delete_list opt_on_delete_item use
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	opt_delete_options opt_delete_option varchar nchar nvarchar
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	opt_outer table_list table_name opt_option opt_place
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	opt_attribute opt_attribute_list attribute column_list column_list_id
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	opt_column_list grant_privileges opt_table grant_list grant_option
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	object_privilege object_privilege_list user_list rename_list
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	clear_privileges flush_options flush_option
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	equal optional_braces opt_key_definition key_usage_list2
	opt_mi_check_type opt_to mi_check_types normal_join
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	table_to_table_list table_to_table opt_table_list opt_as
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	handler_rkey_function handler_read_or_scan
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	single_multi table_wild_list table_wild_one opt_wild
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	union_clause union_list
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	precision subselect_start opt_and charset
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	subselect_end select_var_list select_var_list_init help opt_len
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	opt_extended_describe
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        prepare prepare_src execute deallocate 
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	statement sp_suid opt_view_list view_list or_replace algorithm
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	sp_c_chistics sp_a_chistics sp_chistic sp_c_chistic xa
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END_OF_INPUT
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%type <NONE> call sp_proc_stmts sp_proc_stmts1 sp_proc_stmt
%type <num>  sp_decl_idents sp_opt_inout sp_handler_type sp_hcond_list
%type <spcondtype> sp_cond sp_hcond
%type <spblock> sp_decls sp_decl
%type <lex> sp_cursor_stmt
%type <spname> sp_name

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%type <NONE>
	'-' '+' '*' '/' '%' '(' ')'
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	',' '!' '{' '}' '&' '|' AND_SYM OR_SYM OR_OR_SYM BETWEEN_SYM CASE_SYM
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	THEN_SYM WHEN_SYM DIV_SYM MOD_SYM OR2_SYM AND_AND_SYM
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%%


query:
	END_OF_INPUT
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	{
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	   THD *thd= YYTHD;
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	   if (!thd->bootstrap &&
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	      (!(thd->lex->select_lex.options & OPTION_FOUND_COMMENT)))
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	   {
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	     my_message(ER_EMPTY_QUERY, ER(ER_EMPTY_QUERY), MYF(0));
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	     YYABORT;
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	   }
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	   else
	   {
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	     thd->lex->sql_command= SQLCOM_EMPTY_QUERY;
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	   }
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	}
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	| verb_clause END_OF_INPUT {};
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verb_clause:
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	  statement
	| begin
	;

/* Verb clauses, except begin */
statement:
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	  alter
	| analyze
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	| backup
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	| call
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	| change
	| check
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	| checksum
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	| commit
	| create
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        | deallocate
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	| delete
	| describe
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	| do
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	| drop
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        | execute
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	| flush
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	| grant
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	| handler
	| help
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	| insert
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	| kill
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	| load
	| lock
	| optimize
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        | keycache
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	| preload
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        | prepare
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	| purge
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	| release
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	| rename
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	| repair
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	| replace
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	| reset
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	| restore
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	| revoke
	| rollback
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	| savepoint
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	| select
	| set
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	| show
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	| slave
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	| start
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	| truncate
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	| unlock
	| update
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	| use
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	| xa
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        ;
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deallocate:
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        deallocate_or_drop PREPARE_SYM ident
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        {
          THD *thd=YYTHD;
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          LEX *lex= thd->lex;
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          if (thd->command == COM_PREPARE)
          {
            yyerror(ER(ER_SYNTAX_ERROR));
            YYABORT;
          }
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          lex->sql_command= SQLCOM_DEALLOCATE_PREPARE;
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          lex->prepared_stmt_name= $3;
        };

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deallocate_or_drop:
	DEALLOCATE_SYM |
	DROP
	;


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prepare:
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        PREPARE_SYM ident FROM prepare_src
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        {
          THD *thd=YYTHD;
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          LEX *lex= thd->lex;
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          if (thd->command == COM_PREPARE)
          {
            yyerror(ER(ER_SYNTAX_ERROR));
            YYABORT;
          }
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          lex->sql_command= SQLCOM_PREPARE;
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          lex->prepared_stmt_name= $2;
        };

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prepare_src:
        TEXT_STRING_sys
        {
          THD *thd=YYTHD;
          LEX *lex= thd->lex;
          lex->prepared_stmt_code= $1;
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          lex->prepared_stmt_code_is_varref= FALSE;
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        }
        | '@' ident_or_text
        {
          THD *thd=YYTHD;
          LEX *lex= thd->lex;
          lex->prepared_stmt_code= $2;
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          lex->prepared_stmt_code_is_varref= TRUE;
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        };
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execute:
        EXECUTE_SYM ident
        {
          THD *thd=YYTHD;
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          LEX *lex= thd->lex;
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          if (thd->command == COM_PREPARE)
          {
            yyerror(ER(ER_SYNTAX_ERROR));
            YYABORT;
          }
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          lex->sql_command= SQLCOM_EXECUTE;
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          lex->prepared_stmt_name= $2;
        }
        execute_using
        {}
        ;

execute_using:
        /* nothing */
        | USING execute_var_list
        ;

execute_var_list:
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        execute_var_list ',' execute_var_ident
        | execute_var_ident
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        ;

execute_var_ident: '@' ident_or_text
        {
          LEX *lex=Lex;
          LEX_STRING *lexstr= (LEX_STRING*)sql_memdup(&$2, sizeof(LEX_STRING));
          if (!lexstr || lex->prepared_stmt_params.push_back(lexstr))
              YYABORT;
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        }
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        ;

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/* help */

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help:
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       HELP_SYM ident_or_text
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       {
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	  LEX *lex= Lex;
	  lex->sql_command= SQLCOM_HELP;
	  lex->help_arg= $2.str;
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       };
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/* change master */

change:
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       CHANGE MASTER_SYM TO_SYM
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        {
	  LEX *lex = Lex;
	  lex->sql_command = SQLCOM_CHANGE_MASTER;
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	  bzero((char*) &lex->mi, sizeof(lex->mi));
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        }
       master_defs
	{}
       ;
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master_defs:
       master_def
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       | master_defs ',' master_def;
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master_def:
       MASTER_HOST_SYM EQ TEXT_STRING_sys
       {
	 Lex->mi.host = $3.str;
       }
       |
       MASTER_USER_SYM EQ TEXT_STRING_sys
       {
	 Lex->mi.user = $3.str;
       }
       |
       MASTER_PASSWORD_SYM EQ TEXT_STRING_sys
       {
	 Lex->mi.password = $3.str;
       }
       |
       MASTER_PORT_SYM EQ ULONG_NUM
       {
	 Lex->mi.port = $3;
       }
       |
       MASTER_CONNECT_RETRY_SYM EQ ULONG_NUM
       {
	 Lex->mi.connect_retry = $3;
       }
       | MASTER_SSL_SYM EQ ULONG_NUM
         {
           Lex->mi.ssl= $3 ? 
               LEX_MASTER_INFO::SSL_ENABLE : LEX_MASTER_INFO::SSL_DISABLE;
         }
       | MASTER_SSL_CA_SYM EQ TEXT_STRING_sys
         {
           Lex->mi.ssl_ca= $3.str;
         }
       | MASTER_SSL_CAPATH_SYM EQ TEXT_STRING_sys
         {
           Lex->mi.ssl_capath= $3.str;
         }
       | MASTER_SSL_CERT_SYM EQ TEXT_STRING_sys
         {
           Lex->mi.ssl_cert= $3.str;
         }
       | MASTER_SSL_CIPHER_SYM EQ TEXT_STRING_sys
         {
           Lex->mi.ssl_cipher= $3.str;
         }
       | MASTER_SSL_KEY_SYM EQ TEXT_STRING_sys
         {
           Lex->mi.ssl_key= $3.str;
	 }
       |
         master_file_def
       ;

master_file_def:
       MASTER_LOG_FILE_SYM EQ TEXT_STRING_sys
       {
	 Lex->mi.log_file_name = $3.str;
       }
       | MASTER_LOG_POS_SYM EQ ulonglong_num
         {
           Lex->mi.pos = $3;
           /* 
              If the user specified a value < BIN_LOG_HEADER_SIZE, adjust it
              instead of causing subsequent errors. 
              We need to do it in this file, because only there we know that 
              MASTER_LOG_POS has been explicitely specified. On the contrary
              in change_master() (sql_repl.cc) we cannot distinguish between 0
              (MASTER_LOG_POS explicitely specified as 0) and 0 (unspecified),
              whereas we want to distinguish (specified 0 means "read the binlog
              from 0" (4 in fact), unspecified means "don't change the position
              (keep the preceding value)").
           */
           Lex->mi.pos = max(BIN_LOG_HEADER_SIZE, Lex->mi.pos);
         }
       | RELAY_LOG_FILE_SYM EQ TEXT_STRING_sys
         {
           Lex->mi.relay_log_name = $3.str;
         }
       | RELAY_LOG_POS_SYM EQ ULONG_NUM
         {
           Lex->mi.relay_log_pos = $3;
           /* Adjust if < BIN_LOG_HEADER_SIZE (same comment as Lex->mi.pos) */
           Lex->mi.relay_log_pos = max(BIN_LOG_HEADER_SIZE, Lex->mi.relay_log_pos);
         }
       ;

/* create a table */

create:
	CREATE opt_table_options TABLE_SYM opt_if_not_exists table_ident
	{
	  THD *thd= YYTHD;
	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_CREATE_TABLE;
	  if (!lex->select_lex.add_table_to_list(thd, $5, NULL,
						 TL_OPTION_UPDATING,
						 (using_update_log ?
						  TL_READ_NO_INSERT:
						  TL_READ)))
	    YYABORT;
	  lex->create_list.empty();
	  lex->key_list.empty();
	  lex->col_list.empty();
	  lex->change=NullS;
	  bzero((char*) &lex->create_info,sizeof(lex->create_info));
	  lex->create_info.options=$2 | $4;
	  lex->create_info.db_type= (enum db_type) lex->thd->variables.table_type;
	  lex->create_info.default_table_charset= NULL;
	  lex->name=0;
	}
	create2
	  { Lex->current_select= &Lex->select_lex; }
	| CREATE opt_unique_or_fulltext INDEX_SYM ident key_alg ON table_ident
	  {
	    LEX *lex=Lex;
	    lex->sql_command= SQLCOM_CREATE_INDEX;
	    if (!lex->current_select->add_table_to_list(lex->thd, $7, NULL,
							TL_OPTION_UPDATING))
	      YYABORT;
	    lex->create_list.empty();
	    lex->key_list.empty();
	    lex->col_list.empty();
	    lex->change=NullS;
	  }
	   '(' key_list ')'
	  {
	    LEX *lex=Lex;

	    lex->key_list.push_back(new Key($2,$4.str, $5, 0, lex->col_list));
	    lex->col_list.empty();
	  }
	| CREATE DATABASE opt_if_not_exists ident
	  {
             Lex->create_info.default_table_charset= NULL;
             Lex->create_info.used_fields= 0;
          }
	  opt_create_database_options
	  {
	    LEX *lex=Lex;
	    lex->sql_command=SQLCOM_CREATE_DB;
	    lex->name=$4.str;
            lex->create_info.options=$3;
	  }
	| CREATE udf_func_type FUNCTION_SYM sp_name
	  {
	    LEX *lex=Lex;
	    lex->spname= $4;
	    lex->udf.type= $2;
	  }
	  create_function_tail
	  {}
	| CREATE PROCEDURE sp_name
	  {
	    LEX *lex= Lex;
	    sp_head *sp;

	    if (lex->sphead)
	    {
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	      my_error(ER_SP_NO_RECURSIVE_CREATE, MYF(0), "PROCEDURE");
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	      YYABORT;
	    }
	    /* Order is important here: new - reset - init */
	    sp= new sp_head();
	    sp->reset_thd_mem_root(YYTHD);
	    sp->init(lex);

	    sp->m_type= TYPE_ENUM_PROCEDURE;
	    lex->sphead= sp;
	    /*
	     * We have to turn of CLIENT_MULTI_QUERIES while parsing a
	     * stored procedure, otherwise yylex will chop it into pieces
	     * at each ';'.
	     */
	    sp->m_old_cmq= YYTHD->client_capabilities & CLIENT_MULTI_QUERIES;
	    YYTHD->client_capabilities &= (~CLIENT_MULTI_QUERIES);
	  }
          '('
	  {
	    LEX *lex= Lex;

	    lex->sphead->m_param_begin= lex->tok_start+1;
	  }
	  sp_pdparam_list
	  ')'
	  {
	    LEX *lex= Lex;

	    lex->sphead->m_param_end= lex->tok_start;
	    bzero((char *)&lex->sp_chistics, sizeof(st_sp_chistics));
	  }
	  sp_c_chistics
	  {
	    LEX *lex= Lex;

	    lex->sphead->m_chistics= &lex->sp_chistics;
	    lex->sphead->m_body_begin= lex->tok_start;
	  }
	  sp_proc_stmt
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;

	    if (sp->check_backpatch(YYTHD))
	      YYABORT;
	    sp->init_strings(YYTHD, lex, $3);
	    lex->sql_command= SQLCOM_CREATE_PROCEDURE;
	    /* Restore flag if it was cleared above */
	    if (sp->m_old_cmq)
	      YYTHD->client_capabilities |= CLIENT_MULTI_QUERIES;
	    sp->restore_thd_mem_root(YYTHD);
	  }
	| CREATE or_replace algorithm VIEW_SYM table_ident
	  {
	    THD *thd= YYTHD;
	    LEX *lex= thd->lex;
	    lex->sql_command= SQLCOM_CREATE_VIEW;
	    lex->select_lex.resolve_mode= SELECT_LEX::SELECT_MODE;
	    /* first table in list is target VIEW name */
	    if (!lex->select_lex.add_table_to_list(thd, $5, NULL, 0))
              YYABORT;
	  }
	  opt_view_list AS select_init check_option
	  {}
        | CREATE TRIGGER_SYM ident trg_action_time trg_event 
          ON table_ident FOR_SYM EACH_SYM ROW_SYM
          {
            LEX *lex= Lex;
            sp_head *sp;
           
            if (lex->sphead)
            {
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              my_error(ER_SP_NO_RECURSIVE_CREATE, MYF(0), "TRIGGER");
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              YYABORT;
            }
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            if (!(sp= new sp_head()))
              YYABORT;
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            sp->reset_thd_mem_root(YYTHD);
            sp->init(lex);
            
            sp->m_type= TYPE_ENUM_TRIGGER;
            lex->sphead= sp;
            /*
              We have to turn of CLIENT_MULTI_QUERIES while parsing a
              stored procedure, otherwise yylex will chop it into pieces
              at each ';'.
            */
            sp->m_old_cmq= YYTHD->client_capabilities & CLIENT_MULTI_QUERIES;
            YYTHD->client_capabilities &= ~CLIENT_MULTI_QUERIES;
            
            bzero((char *)&lex->sp_chistics, sizeof(st_sp_chistics));
            lex->sphead->m_chistics= &lex->sp_chistics;
            lex->sphead->m_body_begin= lex->tok_start;
          }
          sp_proc_stmt
          {
            LEX *lex= Lex;
            sp_head *sp= lex->sphead;
            
            lex->sql_command= SQLCOM_CREATE_TRIGGER;
            sp->init_strings(YYTHD, lex, NULL);
            /* Restore flag if it was cleared above */
            if (sp->m_old_cmq)
              YYTHD->client_capabilities |= CLIENT_MULTI_QUERIES;
            sp->restore_thd_mem_root(YYTHD);

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            lex->ident= $3;
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            /*
              We have to do it after parsing trigger body, because some of
              sp_proc_stmt alternatives are not saving/restoring LEX, so
              lex->query_tables can be wiped out.
              
              QQ: What are other consequences of this?
              
              QQ: Could we loosen lock type in certain cases ?
            */
            if (!lex->select_lex.add_table_to_list(YYTHD, $7, 
                                                   (LEX_STRING*) 0,
                                                   TL_OPTION_UPDATING,
                                                   TL_WRITE))
              YYABORT;
          }
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	| CREATE USER clear_privileges grant_list
	  {
	    Lex->sql_command = SQLCOM_CREATE_USER;
          }
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	;

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clear_privileges:
        /* Nothing */
        {
          LEX *lex=Lex;
          lex->users_list.empty();
          lex->columns.empty();
          lex->grant= lex->grant_tot_col= 0;
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	  lex->all_privileges= 0;
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          lex->select_lex.db= 0;
          lex->ssl_type= SSL_TYPE_NOT_SPECIFIED;
          lex->ssl_cipher= lex->x509_subject= lex->x509_issuer= 0;
          bzero((char *)&(lex->mqh),sizeof(lex->mqh));
        }
        ;

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sp_name:
	  IDENT_sys '.' IDENT_sys
	  {
	    $$= new sp_name($1, $3);
	    $$->init_qname(YYTHD);
	  }
	| IDENT_sys
	  {
	    $$= sp_name_current_db_new(YYTHD, $1);
	  }
	;

create_function_tail:
	  RETURNS_SYM udf_type UDF_SONAME_SYM TEXT_STRING_sys
	  {
	    LEX *lex=Lex;
	    lex->sql_command = SQLCOM_CREATE_FUNCTION;
	    lex->udf.name = lex->spname->m_name;
	    lex->udf.returns=(Item_result) $2;
	    lex->udf.dl=$4.str;
	  }
	| '('
	  {
	    LEX *lex= Lex;
	    sp_head *sp;

	    if (lex->sphead)
	    {
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	      my_error(ER_SP_NO_RECURSIVE_CREATE, MYF(0), "FUNCTION");
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	      YYABORT;
	    }
	    /* Order is important here: new - reset - init */
	    sp= new sp_head();
	    sp->reset_thd_mem_root(YYTHD);
	    sp->init(lex);

	    sp->m_type= TYPE_ENUM_FUNCTION;
	    lex->sphead= sp;
	    /*
	     * We have to turn of CLIENT_MULTI_QUERIES while parsing a
	     * stored procedure, otherwise yylex will chop it into pieces
	     * at each ';'.
	     */
	    sp->m_old_cmq= YYTHD->client_capabilities & CLIENT_MULTI_QUERIES;
	    YYTHD->client_capabilities &= ~CLIENT_MULTI_QUERIES;
	    lex->sphead->m_param_begin= lex->tok_start+1;
	  }
          sp_fdparam_list ')'
	  {
	    LEX *lex= Lex;

	    lex->sphead->m_param_end= lex->tok_start;
	  }
	  RETURNS_SYM
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;

	    sp->m_returns_begin= lex->tok_start;
	    sp->m_returns_cs= lex->charset= NULL;
	  }
	  type
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;

	    sp->m_returns_end= lex->tok_start;
	    sp->m_returns= (enum enum_field_types)$8;
	    sp->m_returns_cs= lex->charset;
	    bzero((char *)&lex->sp_chistics, sizeof(st_sp_chistics));
	  }
	  sp_c_chistics
	  {
	    LEX *lex= Lex;

	    lex->sphead->m_chistics= &lex->sp_chistics;
	    lex->sphead->m_body_begin= lex->tok_start;
	  }
	  sp_proc_stmt
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;

	    if (sp->check_backpatch(YYTHD))
	      YYABORT;
	    lex->sql_command= SQLCOM_CREATE_SPFUNCTION;
	    sp->init_strings(YYTHD, lex, lex->spname);
	    /* Restore flag if it was cleared above */
	    if (sp->m_old_cmq)
	      YYTHD->client_capabilities |= CLIENT_MULTI_QUERIES;
	    sp->restore_thd_mem_root(YYTHD);
	  }
	;

sp_a_chistics:
	  /* Empty */ {}
	| sp_a_chistics sp_chistic {}
	;

sp_c_chistics:
	  /* Empty */ {}
	| sp_c_chistics sp_c_chistic {}
	;

/* Characteristics for both create and alter */
sp_chistic:
	  COMMENT_SYM TEXT_STRING_sys
	  { Lex->sp_chistics.comment= $2; }
	| LANGUAGE_SYM SQL_SYM
	  { /* Just parse it, we only have one language for now. */ }
	| NO_SYM SQL_SYM
	  { Lex->sp_chistics.daccess= SP_NO_SQL; }
	| CONTAINS_SYM SQL_SYM
	  { Lex->sp_chistics.daccess= SP_CONTAINS_SQL; }
	| READS_SYM SQL_SYM DATA_SYM
	  { Lex->sp_chistics.daccess= SP_READS_SQL_DATA; }
	| MODIFIES_SYM SQL_SYM DATA_SYM
	  { Lex->sp_chistics.daccess= SP_MODIFIES_SQL_DATA; }
	| sp_suid
	  { }
	;

/* Create characteristics */
sp_c_chistic:
	  sp_chistic            { }
	| DETERMINISTIC_SYM     { Lex->sp_chistics.detistic= TRUE; }
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	| not DETERMINISTIC_SYM { Lex->sp_chistics.detistic= FALSE; }
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	;

sp_suid:
	  SQL_SYM SECURITY_SYM DEFINER_SYM
	  {
	    Lex->sp_chistics.suid= SP_IS_SUID;
	  }
	| SQL_SYM SECURITY_SYM INVOKER_SYM
	  {
	    Lex->sp_chistics.suid= SP_IS_NOT_SUID;
	  }
	;

call:
	  CALL_SYM sp_name
	  {
	    LEX *lex = Lex;

	    lex->sql_command= SQLCOM_CALL;
	    lex->spname= $2;
	    lex->value_list.empty();
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	    sp_add_to_hash(&lex->spprocs, $2);
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	  }
          '(' sp_cparam_list ')' {}
	;

/* CALL parameters */
sp_cparam_list:
	  /* Empty */
	| sp_cparams
	;

sp_cparams:
	  sp_cparams ',' expr
	  {
	    Lex->value_list.push_back($3);
	  }
	| expr
	  {
	    Lex->value_list.push_back($1);
	  }
	;

/* Stored FUNCTION parameter declaration list */
sp_fdparam_list:
	  /* Empty */
	| sp_fdparams
	;

sp_fdparams:
	  sp_fdparams ',' sp_fdparam
	| sp_fdparam
	;

sp_fdparam:
	  ident type
	  {
	    LEX *lex= Lex;
	    sp_pcontext *spc= lex->spcont;

	    if (spc->find_pvar(&$1, TRUE))
	    {
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	      my_error(ER_SP_DUP_PARAM, MYF(0), $1.str);
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	      YYABORT;
	    }
	    spc->push_pvar(&$1, (enum enum_field_types)$2, sp_param_in);
	  }
	;

/* Stored PROCEDURE parameter declaration list */
sp_pdparam_list:
	  /* Empty */
	| sp_pdparams
	;

sp_pdparams:
	  sp_pdparams ',' sp_pdparam
	| sp_pdparam
	;

sp_pdparam:
	  sp_opt_inout ident type
	  {
	    LEX *lex= Lex;
	    sp_pcontext *spc= lex->spcont;

	    if (spc->find_pvar(&$2, TRUE))
	    {
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	      my_error(ER_SP_DUP_PARAM, MYF(0), $2.str);
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	      YYABORT;
	    }
	    spc->push_pvar(&$2, (enum enum_field_types)$3,
			   (sp_param_mode_t)$1);
	  }
	;

sp_opt_inout:
	  /* Empty */ { $$= sp_param_in; }
	| IN_SYM      { $$= sp_param_in; }
	| OUT_SYM     { $$= sp_param_out; }
	| INOUT_SYM   { $$= sp_param_inout; }
	;

sp_proc_stmts:
	  /* Empty */ {}
	| sp_proc_stmts  { Lex->query_tables= 0; } sp_proc_stmt ';'
	;

sp_proc_stmts1:
	  sp_proc_stmt ';' {}
	| sp_proc_stmts1  { Lex->query_tables= 0; } sp_proc_stmt ';'
	;

sp_decls:
	  /* Empty */
	  {
	    $$.vars= $$.conds= $$.hndlrs= $$.curs= 0;
	  }
	| sp_decls sp_decl ';'
	  {
	    /* We check for declarations out of (standard) order this way
	       because letting the grammar rules reflect it caused tricky
	       shift/reduce conflicts with the wrong result. (And we get
	       better error handling this way.) */
	    if (($2.vars || $2.conds) && ($1.curs || $1.hndlrs))
	    { /* Variable or condition following cursor or handler */
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	      my_message(ER_SP_VARCOND_AFTER_CURSHNDLR,
                         ER(ER_SP_VARCOND_AFTER_CURSHNDLR), MYF(0));
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	      YYABORT;
	    }
	    if ($2.curs && $1.hndlrs)
	    { /* Cursor following handler */
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	      my_message(ER_SP_CURSOR_AFTER_HANDLER,
                         ER(ER_SP_CURSOR_AFTER_HANDLER), MYF(0));
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	      YYABORT;
	    }
	    $$.vars= $1.vars + $2.vars;
	    $$.conds= $1.conds + $2.conds;
	    $$.hndlrs= $1.hndlrs + $2.hndlrs;
	    $$.curs= $1.curs + $2.curs;
	  }
	;

sp_decl:
	  DECLARE_SYM sp_decl_idents type sp_opt_default
	  {
	    LEX *lex= Lex;
	    sp_pcontext *ctx= lex->spcont;
	    uint max= ctx->context_pvars();
	    enum enum_field_types type= (enum enum_field_types)$3;
	    Item *it= $4;

	    for (uint i = max-$2 ; i < max ; i++)
	    {
	      ctx->set_type(i, type);
	      if (! it)
	        ctx->set_isset(i, FALSE);
	      else
	      {
	        sp_instr_set *in= new sp_instr_set(lex->sphead->instructions(),
	                                           ctx,
						   ctx->pvar_context2index(i),
						   it, type);

		in->tables= lex->query_tables;
		lex->query_tables= 0;
	        lex->sphead->add_instr(in);
	        ctx->set_isset(i, TRUE);
		ctx->set_default(i, it);
	      }
	    }
	    $$.vars= $2;
	    $$.conds= $$.hndlrs= $$.curs= 0;
	  }
	| DECLARE_SYM ident CONDITION_SYM FOR_SYM sp_cond
	  {
	    LEX *lex= Lex;
	    sp_pcontext *spc= lex->spcont;

	    if (spc->find_cond(&$2, TRUE))
	    {
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	      my_error(ER_SP_DUP_COND, MYF(0), $2.str);
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	      YYABORT;
	    }
	    YYTHD->lex->spcont->push_cond(&$2, $5);
	    $$.vars= $$.hndlrs= $$.curs= 0;
	    $$.conds= 1;
	  }
	| DECLARE_SYM sp_handler_type HANDLER_SYM FOR_SYM
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_pcontext *ctx= lex->spcont;
	    sp_instr_hpush_jump *i=
              new sp_instr_hpush_jump(sp->instructions(), ctx, $2,
	                              ctx->current_pvars());

	    sp->add_instr(i);
	    sp->push_backpatch(i, ctx->push_label((char *)"", 0));
	    ctx->add_handler();
	    sp->m_in_handler= TRUE;
	  }
	  sp_hcond_list sp_proc_stmt
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_pcontext *ctx= lex->spcont;
	    sp_label_t *hlab= lex->spcont->pop_label(); /* After this hdlr */
	    sp_instr_hreturn *i;

	    if ($2 == SP_HANDLER_CONTINUE)
	    {
	      i= new sp_instr_hreturn(sp->instructions(), ctx,
	                              ctx->current_pvars());
	      sp->add_instr(i);
	    }
	    else
	    {  /* EXIT or UNDO handler, just jump to the end of the block */
	      i= new sp_instr_hreturn(sp->instructions(), ctx, 0);

	      sp->add_instr(i);
	      sp->push_backpatch(i, lex->spcont->last_label()); /* Block end */
	    }
	    lex->sphead->backpatch(hlab);
	    sp->m_in_handler= FALSE;
	    $$.vars= $$.conds= $$.curs= 0;
	    $$.hndlrs= $6;
	  }
	| DECLARE_SYM ident CURSOR_SYM FOR_SYM sp_cursor_stmt
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_pcontext *ctx= lex->spcont;
	    uint offp;
	    sp_instr_cpush *i;

	    if (ctx->find_cursor(&$2, &offp, TRUE))
	    {
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	      my_error(ER_SP_DUP_CURS, MYF(0), $2.str);
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	      delete $5;
	      YYABORT;
	    }
            i= new sp_instr_cpush(sp->instructions(), ctx, $5);
	    sp->add_instr(i);
	    ctx->push_cursor(&$2);
	    $$.vars= $$.conds= $$.hndlrs= 0;
	    $$.curs= 1;
	  }
	;

sp_cursor_stmt:
	  {
	    Lex->sphead->reset_lex(YYTHD);

	    /* We use statement here just be able to get a better
	       error message. Using 'select' works too, but will then
	       result in a generic "syntax error" if a non-select
	       statement is given. */
	  }
	  statement
	  {
	    LEX *lex= Lex;

	    if (lex->sql_command != SQLCOM_SELECT)
	    {
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	      my_message(ER_SP_BAD_CURSOR_QUERY, ER(ER_SP_BAD_CURSOR_QUERY),
                         MYF(0));
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	      YYABORT;
	    }
	    if (lex->result)
	    {
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	      my_message(ER_SP_BAD_CURSOR_SELECT, ER(ER_SP_BAD_CURSOR_SELECT),
                         MYF(0));
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	      YYABORT;
	    }
	    lex->sp_lex_in_use= TRUE;
	    $$= lex;
	    lex->sphead->restore_lex(YYTHD);
	  }
	;

sp_handler_type:
	  EXIT_SYM      { $$= SP_HANDLER_EXIT; }
	| CONTINUE_SYM  { $$= SP_HANDLER_CONTINUE; }
/*	| UNDO_SYM      { QQ No yet } */
	;

sp_hcond_list:
	  sp_hcond
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_instr_hpush_jump *i= (sp_instr_hpush_jump *)sp->last_instruction();

	    i->add_condition($1);
	    $$= 1;
	  }
	| sp_hcond_list ',' sp_hcond
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_instr_hpush_jump *i= (sp_instr_hpush_jump *)sp->last_instruction();

	    i->add_condition($3);
	    $$= $1 + 1;
	  }
	;

sp_cond:
	  ULONG_NUM
	  {			/* mysql errno */
	    $$= (sp_cond_type_t *)YYTHD->alloc(sizeof(sp_cond_type_t));
	    $$->type= sp_cond_type_t::number;
	    $$->mysqlerr= $1;
	  }
	| SQLSTATE_SYM opt_value TEXT_STRING_literal
	  {		/* SQLSTATE */
	    uint len= ($3.length < sizeof($$->sqlstate)-1 ?
                       $3.length : sizeof($$->sqlstate)-1);

	    $$= (sp_cond_type_t *)YYTHD->alloc(sizeof(sp_cond_type_t));
	    $$->type= sp_cond_type_t::state;
	    memcpy($$->sqlstate, $3.str, len);
	    $$->sqlstate[len]= '\0';
	  }
	;

opt_value:
	  /* Empty */  {}
	| VALUE_SYM    {}
	;

sp_hcond:
	  sp_cond
	  {
	    $$= $1;
	  }
	| ident			/* CONDITION name */
	  {
	    $$= Lex->spcont->find_cond(&$1);
	    if ($$ == NULL)
	    {
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	      my_error(ER_SP_COND_MISMATCH, MYF(0), $1.str);
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	      YYABORT;
	    }
	  }
	| SQLWARNING_SYM	/* SQLSTATEs 01??? */
	  {
	    $$= (sp_cond_type_t *)YYTHD->alloc(sizeof(sp_cond_type_t));
	    $$->type= sp_cond_type_t::warning;
	  }
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	| not FOUND_SYM		/* SQLSTATEs 02??? */
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	  {
	    $$= (sp_cond_type_t *)YYTHD->alloc(sizeof(sp_cond_type_t));
	    $$->type= sp_cond_type_t::notfound;
	  }
	| SQLEXCEPTION_SYM	/* All other SQLSTATEs */
	  {
	    $$= (sp_cond_type_t *)YYTHD->alloc(sizeof(sp_cond_type_t));
	    $$->type= sp_cond_type_t::exception;
	  }
	;

sp_decl_idents:
	  ident
	  {
	    LEX *lex= Lex;
	    sp_pcontext *spc= lex->spcont;

	    if (spc->find_pvar(&$1, TRUE))
	    {
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	      my_error(ER_SP_DUP_VAR, MYF(0), $1.str);
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	      YYABORT;
	    }
	    spc->push_pvar(&$1, (enum_field_types)0, sp_param_in);
	    $$= 1;
	  }
	| sp_decl_idents ',' ident
	  {
	    LEX *lex= Lex;
	    sp_pcontext *spc= lex->spcont;

	    if (spc->find_pvar(&$3, TRUE))
	    {
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	      my_error(ER_SP_DUP_VAR, MYF(0), $3.str);
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	      YYABORT;
	    }
	    spc->push_pvar(&$3, (enum_field_types)0, sp_param_in);
	    $$= $1 + 1;
	  }
	;

sp_opt_default:
	  /* Empty */ { $$ = NULL; }
        | DEFAULT expr { $$ = $2; }
	;

sp_proc_stmt:
	  {
	    LEX *lex= Lex;

	    lex->sphead->reset_lex(YYTHD);
	    lex->sphead->m_tmp_query= lex->tok_start;
	  }
	  statement
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;

	    if ((lex->sql_command == SQLCOM_SELECT && !lex->result) ||
	        sp_multi_results_command(lex->sql_command))
	    {
	      /* We maybe have one or more SELECT without INTO */
	      sp->m_multi_results= TRUE;
	    }
	    if (lex->sql_command == SQLCOM_CHANGE_DB)
	    { /* "USE db" doesn't work in a procedure */
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	      my_message(ER_SP_NO_USE, ER(ER_SP_NO_USE), MYF(0));
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	      YYABORT;
	    }
	    /* Don't add an instruction for empty SET statements.
	    ** (This happens if the SET only contained local variables,
	    **  which get their set instructions generated separately.)
	    */
	    if (lex->sql_command != SQLCOM_SET_OPTION ||
		! lex->var_list.is_empty())
	    {
		sp_instr_stmt *i=new sp_instr_stmt(sp->instructions(),
						   lex->spcont);

		/* Extract the query statement from the tokenizer:
                   The end is either lex->tok_end or tok->ptr. */
		if (lex->ptr - lex->tok_end > 1)
		  i->m_query.length= lex->ptr - sp->m_tmp_query;
		else
		  i->m_query.length= lex->tok_end - sp->m_tmp_query;
		i->m_query.str= strmake_root(YYTHD->mem_root,
					     (char *)sp->m_tmp_query,
					     i->m_query.length);
		i->set_lex(lex);
		sp->add_instr(i);
		lex->sp_lex_in_use= TRUE;
	      }
	    sp->restore_lex(YYTHD);
          }
	| RETURN_SYM expr
	  {
	    LEX *lex= Lex;

	    if (lex->sphead->m_type == TYPE_ENUM_PROCEDURE)
	    {
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	      my_message(ER_SP_BADRETURN, ER(ER_SP_BADRETURN), MYF(0));
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	      YYABORT;
	    }
	    else
	    {
	      sp_instr_freturn *i;

	      i= new sp_instr_freturn(lex->sphead->instructions(),
				      lex->spcont,
		                      $2, lex->sphead->m_returns);
	      lex->sphead->add_instr(i);
	      lex->sphead->m_has_return= TRUE;
	    }
	  }
	| IF sp_if END IF {}
	| CASE_SYM WHEN_SYM
	  {
	    Lex->sphead->m_simple_case= FALSE;
	  }
	  sp_case END CASE_SYM {}
	| CASE_SYM expr WHEN_SYM
	  {
	    /* We "fake" this by using an anonymous variable which we
	       set to the expression. Note that all WHENs are evaluate
	       at the same frame level, so we then know that it's the
	       top-most variable in the frame. */
	    LEX *lex= Lex;
	    uint offset= lex->spcont->current_pvars();
	    sp_instr_set *i = new sp_instr_set(lex->sphead->instructions(),
					       lex->spcont,
	                                       offset, $2, MYSQL_TYPE_STRING);
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	    LEX_STRING dummy={(char*)"", 0};
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	    lex->spcont->push_pvar(&dummy, MYSQL_TYPE_STRING, sp_param_in);
	    i->tables= lex->query_tables;
	    lex->query_tables= 0;
	    lex->sphead->add_instr(i);
	    lex->sphead->m_simple_case= TRUE;
	  }
	  sp_case END CASE_SYM
	  {
	    Lex->spcont->pop_pvar();
	  }
	| sp_labeled_control
	  {}
	| { /* Unlabeled controls get a secret label. */
	    LEX *lex= Lex;

	    lex->spcont->push_label((char *)"", lex->sphead->instructions());
	  }
	  sp_unlabeled_control
	  {
	    LEX *lex= Lex;

	    lex->sphead->backpatch(lex->spcont->pop_label());
	  }
	| LEAVE_SYM IDENT
	  {
	    LEX *lex= Lex;
	    sp_head *sp = lex->sphead;
	    sp_pcontext *ctx= lex->spcont;
	    sp_label_t *lab= ctx->find_label($2.str);

	    if (! lab)
	    {
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	      my_error(ER_SP_LILABEL_MISMATCH, MYF(0), "LEAVE", $2.str);
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	      YYABORT;
	    }
	    else
	    {
	      uint ip= sp->instructions();
	      sp_instr_jump *i;
	      sp_instr_hpop *ih;
	      sp_instr_cpop *ic;

	      ih= new sp_instr_hpop(ip++, ctx, 0);
	      sp->push_backpatch(ih, lab);
	      sp->add_instr(ih);
	      ic= new sp_instr_cpop(ip++, ctx, 0);
	      sp->push_backpatch(ic, lab);
	      sp->add_instr(ic);
	      i= new sp_instr_jump(ip, ctx);
	      sp->push_backpatch(i, lab);  /* Jumping forward */
              sp->add_instr(i);
	    }
	  }
	| ITERATE_SYM IDENT
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_pcontext *ctx= lex->spcont;
	    sp_label_t *lab= ctx->find_label($2.str);

	    if (! lab || lab->type != SP_LAB_ITER)
	    {
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	      my_error(ER_SP_LILABEL_MISMATCH, MYF(0), "ITERATE", $2.str);
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	      YYABORT;
	    }
	    else
	    {
	      sp_instr_jump *i;
	      uint ip= sp->instructions();
	      uint n;

	      n= ctx->diff_handlers(lab->ctx);
	      if (n)
	        sp->add_instr(new sp_instr_hpop(ip++, ctx, n));
	      n= ctx->diff_cursors(lab->ctx);
	      if (n)
	        sp->add_instr(new sp_instr_cpop(ip++, ctx, n));
	      i= new sp_instr_jump(ip, ctx, lab->ip); /* Jump back */
              sp->add_instr(i);
	    }
	  }
	| LABEL_SYM IDENT
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_pcontext *ctx= lex->spcont;
	    sp_label_t *lab= ctx->find_label($2.str);

	    if (lab)
	    {
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	      my_error(ER_SP_LABEL_REDEFINE, MYF(0), $2.str);
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	      YYABORT;
	    }
	    else
	    {
	      lab= ctx->push_label($2.str, sp->instructions());
	      lab->type= SP_LAB_GOTO;
	      lab->ctx= ctx;
              sp->backpatch(lab);
	    }
	  }
	| GOTO_SYM IDENT
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_pcontext *ctx= lex->spcont;
	    uint ip= lex->sphead->instructions();
	    sp_label_t *lab;
	    sp_instr_jump *i;
	    sp_instr_hpop *ih;
	    sp_instr_cpop *ic;

	    if (sp->m_in_handler)
	    {
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	      my_message(ER_SP_GOTO_IN_HNDLR, ER(ER_SP_GOTO_IN_HNDLR), MYF(0));
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	      YYABORT;
	    }
	    lab= ctx->find_label($2.str);
	    if (! lab)
	    {
	      lab= (sp_label_t *)YYTHD->alloc(sizeof(sp_label_t));
	      lab->name= $2.str;
	      lab->ip= 0;
	      lab->type= SP_LAB_REF;
	      lab->ctx= ctx;

	      ih= new sp_instr_hpop(ip++, ctx, 0);
	      sp->push_backpatch(ih, lab);
	      sp->add_instr(ih);
	      ic= new sp_instr_cpop(ip++, ctx, 0);
	      sp->add_instr(ic);
	      sp->push_backpatch(ic, lab);
	      i= new sp_instr_jump(ip, ctx);
	      sp->push_backpatch(i, lab);  /* Jumping forward */
	      sp->add_instr(i);
	    }
	    else
	    {
	      uint n;

	      n= ctx->diff_handlers(lab->ctx);
	      if (n)
	      {
	        ih= new sp_instr_hpop(ip++, ctx, n);
	        sp->add_instr(ih);
	      }
	      n= ctx->diff_cursors(lab->ctx);
	      if (n)
	      {
	        ic= new sp_instr_cpop(ip++, ctx, n);
	        sp->add_instr(ic);
	      }
	      i= new sp_instr_jump(ip, ctx, lab->ip); /* Jump back */
	      sp->add_instr(i);
	    }
	  }
	| OPEN_SYM ident
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    uint offset;
	    sp_instr_copen *i;

	    if (! lex->spcont->find_cursor(&$2, &offset))
	    {
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	      my_error(ER_SP_CURSOR_MISMATCH, MYF(0), $2.str);
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	      YYABORT;
	    }
	    i= new sp_instr_copen(sp->instructions(), lex->spcont, offset);
	    sp->add_instr(i);
	  }
	| FETCH_SYM sp_opt_fetch_noise ident INTO
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    uint offset;
	    sp_instr_cfetch *i;

	    if (! lex->spcont->find_cursor(&$3, &offset))
	    {
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	      my_error(ER_SP_CURSOR_MISMATCH, MYF(0), $3.str);
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	      YYABORT;
	    }
	    i= new sp_instr_cfetch(sp->instructions(), lex->spcont, offset);
	    sp->add_instr(i);
	  }
	  sp_fetch_list
	  { }
	| CLOSE_SYM ident
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    uint offset;
	    sp_instr_cclose *i;

	    if (! lex->spcont->find_cursor(&$2, &offset))
	    {
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	      my_error(ER_SP_CURSOR_MISMATCH, MYF(0), $2.str);
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	      YYABORT;
	    }
	    i= new sp_instr_cclose(sp->instructions(), lex->spcont,  offset);
	    sp->add_instr(i);
	  }
	;

sp_opt_fetch_noise:
	  /* Empty */
	| NEXT_SYM FROM
	| FROM
	;

sp_fetch_list:
	  ident
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_pcontext *spc= lex->spcont;
	    sp_pvar_t *spv;

	    if (!spc || !(spv = spc->find_pvar(&$1)))
	    {
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	      my_error(ER_SP_UNDECLARED_VAR, MYF(0), $1.str);
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	      YYABORT;
	    }
	    else
	    {
	      /* An SP local variable */
	      sp_instr_cfetch *i= (sp_instr_cfetch *)sp->last_instruction();

	      i->add_to_varlist(spv);
	      spv->isset= TRUE;
	    }
	  }
	|
	  sp_fetch_list ',' ident
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_pcontext *spc= lex->spcont;
	    sp_pvar_t *spv;

	    if (!spc || !(spv = spc->find_pvar(&$3)))
	    {
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	      my_error(ER_SP_UNDECLARED_VAR, MYF(0), $3.str);
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	      YYABORT;
	    }
	    else
	    {
	      /* An SP local variable */
	      sp_instr_cfetch *i= (sp_instr_cfetch *)sp->last_instruction();

	      i->add_to_varlist(spv);
	      spv->isset= TRUE;
	    }
	  }
	;

sp_if:
	  expr THEN_SYM
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_pcontext *ctx= lex->spcont;
	    uint ip= sp->instructions();
	    sp_instr_jump_if_not *i = new sp_instr_jump_if_not(ip, ctx, $1);

	    i->tables= lex->query_tables;
	    lex->query_tables= 0;
	    sp->push_backpatch(i, ctx->push_label((char *)"", 0));
            sp->add_instr(i);
	  }
	  sp_proc_stmts1
	  {
	    sp_head *sp= Lex->sphead;
	    sp_pcontext *ctx= Lex->spcont;
	    uint ip= sp->instructions();
	    sp_instr_jump *i = new sp_instr_jump(ip, ctx);

	    sp->add_instr(i);
	    sp->backpatch(ctx->pop_label());
	    sp->push_backpatch(i, ctx->push_label((char *)"", 0));
	  }
	  sp_elseifs
	  {
	    LEX *lex= Lex;

	    lex->sphead->backpatch(lex->spcont->pop_label());
	  }
	;

sp_elseifs:
	  /* Empty */
	| ELSEIF_SYM sp_if
	| ELSE sp_proc_stmts1
	;

sp_case:
	  expr THEN_SYM
	  {
            LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_pcontext *ctx= Lex->spcont;
	    uint ip= sp->instructions();
	    sp_instr_jump_if_not *i;

	    if (! sp->m_simple_case)
	      i= new sp_instr_jump_if_not(ip, ctx, $1);
	    else
	    { /* Simple case: <caseval> = <whenval> */
	      LEX_STRING ivar;

	      ivar.str= (char *)"_tmp_";
	      ivar.length= 5;
	      Item *var= (Item*) new Item_splocal(ivar, 
						  ctx->current_pvars()-1);
	      Item *expr= new Item_func_eq(var, $1);

	      i= new sp_instr_jump_if_not(ip, ctx, expr);
              lex->variables_used= 1;
	    }
	    sp->push_backpatch(i, ctx->push_label((char *)"", 0));
	    i->tables= lex->query_tables;
	    lex->query_tables= 0;
            sp->add_instr(i);
	  }
	  sp_proc_stmts1
	  {
	    sp_head *sp= Lex->sphead;
	    sp_pcontext *ctx= Lex->spcont;
	    uint ip= sp->instructions();
	    sp_instr_jump *i = new sp_instr_jump(ip, ctx);

	    sp->add_instr(i);
	    sp->backpatch(ctx->pop_label());
	    sp->push_backpatch(i, ctx->push_label((char *)"", 0));
	  }
	  sp_whens
	  {
	    LEX *lex= Lex;

	    lex->sphead->backpatch(lex->spcont->pop_label());
	  }
	;
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sp_whens:
	  /* Empty */
	  {
	    sp_head *sp= Lex->sphead;
	    uint ip= sp->instructions();
	    sp_instr_error *i= new sp_instr_error(ip, Lex->spcont,
						  ER_SP_CASE_NOT_FOUND);
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	    sp->add_instr(i);
	  }
	| ELSE sp_proc_stmts1 {}
	| WHEN_SYM sp_case {}
	;
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sp_labeled_control:
	  IDENT ':'
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	  {
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	    LEX *lex= Lex;
	    sp_pcontext *ctx= lex->spcont;
	    sp_label_t *lab= ctx->find_label($1.str);

	    if (lab)
	    {
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	      my_error(ER_SP_LABEL_REDEFINE, MYF(0), $1.str);
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	      YYABORT;
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	    }
	    else
	    {
	      lab= lex->spcont->push_label($1.str,
	                                   lex->sphead->instructions());
	      lab->type= SP_LAB_ITER;
	    }
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	  }
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	  sp_unlabeled_control sp_opt_label
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	  {
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	    LEX *lex= Lex;
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	    if ($5.str)
	    {
	      sp_label_t *lab= lex->spcont->find_label($5.str);

	      if (!lab ||
	          my_strcasecmp(system_charset_info, $5.str, lab->name) != 0)
	      {
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	        my_error(ER_SP_LABEL_MISMATCH, MYF(0), $5.str);
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	        YYABORT;
	      }
	    }
	    lex->sphead->backpatch(lex->spcont->pop_label());
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	  }
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	;

sp_opt_label:
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        /* Empty  */    { $$= null_lex_str; }
        | IDENT         { $$= $1; }
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	;

sp_unlabeled_control:
	  BEGIN_SYM
	  { /* QQ This is just a dummy for grouping declarations and statements
	       together. No [[NOT] ATOMIC] yet, and we need to figure out how
	       make it coexist with the existing BEGIN COMMIT/ROLLBACK. */
	    LEX *lex= Lex;
	    sp_label_t *lab= lex->spcont->last_label();

	    lab->type= SP_LAB_BEGIN;
	    lex->spcont= lex->spcont->push_context();
	  }
	  sp_decls
	  sp_proc_stmts
	  END
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	  {
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	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_pcontext *ctx= lex->spcont;

  	    sp->backpatch(ctx->last_label());	/* We always have a label */
	    if ($3.hndlrs)
	      sp->add_instr(new sp_instr_hpop(sp->instructions(), ctx,
					      $3.hndlrs));
	    if ($3.curs)
	      sp->add_instr(new sp_instr_cpop(sp->instructions(), ctx,
					      $3.curs));
	    lex->spcont= ctx->pop_context();
	  }
	| LOOP_SYM
	  sp_proc_stmts1 END LOOP_SYM
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	  {
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	    LEX *lex= Lex;
	    uint ip= lex->sphead->instructions();
	    sp_label_t *lab= lex->spcont->last_label();  /* Jumping back */
	    sp_instr_jump *i = new sp_instr_jump(ip, lex->spcont, lab->ip);

	    lex->sphead->add_instr(i);
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	  }
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	| WHILE_SYM expr DO_SYM
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	  {
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	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    uint ip= sp->instructions();
	    sp_instr_jump_if_not *i = new sp_instr_jump_if_not(ip, lex->spcont,
							       $2);

	    /* Jumping forward */
	    sp->push_backpatch(i, lex->spcont->last_label());
	    i->tables= lex->query_tables;
	    lex->query_tables= 0;
            sp->add_instr(i);
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	  }
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	  sp_proc_stmts1 END WHILE_SYM
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	  {
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	    LEX *lex= Lex;
	    uint ip= lex->sphead->instructions();
	    sp_label_t *lab= lex->spcont->last_label();  /* Jumping back */
	    sp_instr_jump *i = new sp_instr_jump(ip, lex->spcont, lab->ip);

	    lex->sphead->add_instr(i);
	  }
	| REPEAT_SYM sp_proc_stmts1 UNTIL_SYM expr END REPEAT_SYM
	  {
	    LEX *lex= Lex;
	    uint ip= lex->sphead->instructions();
	    sp_label_t *lab= lex->spcont->last_label();  /* Jumping back */
	    sp_instr_jump_if_not *i = new sp_instr_jump_if_not(ip, lex->spcont,
							       $4, lab->ip);

	    i->tables= lex->query_tables;
	    lex->query_tables= 0;
            lex->sphead->add_instr(i);
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	  }
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	;

trg_action_time:
            BEFORE_SYM 
            { Lex->trg_chistics.action_time= TRG_ACTION_BEFORE; }
          | AFTER_SYM 
            { Lex->trg_chistics.action_time= TRG_ACTION_AFTER; }
          ;

trg_event:
            INSERT 
            { Lex->trg_chistics.event= TRG_EVENT_INSERT; }
          | UPDATE_SYM
            { Lex->trg_chistics.event= TRG_EVENT_UPDATE; }
          | DELETE_SYM
            { Lex->trg_chistics.event= TRG_EVENT_DELETE; }
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          ;
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create2:
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        '(' create2a {}
        | opt_create_table_options create3 {}
        | LIKE table_ident
          {
            LEX *lex=Lex;
            if (!(lex->name= (char *)$2))
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              YYABORT;
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          }
        | '(' LIKE table_ident ')'
          {
            LEX *lex=Lex;
            if (!(lex->name= (char *)$3))
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              YYABORT;
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          }
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        ;
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create2a:
        field_list ')' opt_create_table_options create3 {}
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	|  create_select ')' { Select->set_braces(1);} union_opt {}
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        ;
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create3:
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	/* empty */ {}
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	| opt_duplicate opt_as     create_select
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          { Select->set_braces(0);} union_clause {}
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	| opt_duplicate opt_as '(' create_select ')'
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          { Select->set_braces(1);} union_opt {}
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        ;

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create_select:
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          SELECT_SYM
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          {
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	    LEX *lex=Lex;
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	    lex->lock_option= using_update_log ? TL_READ_NO_INSERT : TL_READ;
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	    if (lex->sql_command == SQLCOM_INSERT)
	      lex->sql_command= SQLCOM_INSERT_SELECT;
	    else if (lex->sql_command == SQLCOM_REPLACE)
	      lex->sql_command= SQLCOM_REPLACE_SELECT;
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	    /*
              The following work only with the local list, the global list
              is created correctly in this case
	    */
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	    lex->current_select->table_list.save_and_clear(&lex->save_list);
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	    mysql_init_select(lex);
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	    lex->current_select->parsing_place= SELECT_LIST;
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          }
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          select_options select_item_list
	  {
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	    Select->parsing_place= NO_MATTER;
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	  }
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	  opt_select_from
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	  {
	    /*
              The following work only with the local list, the global list
              is created correctly in this case
	    */
	    Lex->current_select->table_list.push_front(&Lex->save_list);
	  }
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        ;
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opt_as:
	/* empty */ {}
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	| AS	    {};
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opt_create_database_options:
	/* empty */			{}
	| create_database_options	{};

create_database_options:
	create_database_option					{}
	| create_database_options create_database_option	{};

create_database_option:
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	default_collation   {}
	| default_charset   {};
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opt_table_options:
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	/* empty */	 { $$= 0; }
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	| table_options  { $$= $1;};
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table_options:
	table_option	{ $$=$1; }
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	| table_option table_options { $$= $1 | $2; };
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table_option:
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	TEMPORARY	{ $$=HA_LEX_CREATE_TMP_TABLE; };
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opt_if_not_exists:
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	/* empty */	 { $$= 0; }
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	| IF not EXISTS	 { $$=HA_LEX_CREATE_IF_NOT_EXISTS; };
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opt_create_table_options:
	/* empty */
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	| create_table_options;
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create_table_options_space_separated:
	create_table_option
	| create_table_option create_table_options_space_separated;

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create_table_options:
	create_table_option
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	| create_table_option     create_table_options
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	| create_table_option ',' create_table_options;
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create_table_option:
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	ENGINE_SYM opt_equal storage_engines    { Lex->create_info.db_type= $3; Lex->create_info.used_fields|= HA_CREATE_USED_ENGINE; }
	| TYPE_SYM opt_equal storage_engines    { Lex->create_info.db_type= $3; WARN_DEPRECATED("TYPE=storage_engine","ENGINE=storage_engine");   Lex->create_info.used_fields|= HA_CREATE_USED_ENGINE; }
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	| MAX_ROWS opt_equal ulonglong_num	{ Lex->create_info.max_rows= $3; Lex->create_info.used_fields|= HA_CREATE_USED_MAX_ROWS;}
	| MIN_ROWS opt_equal ulonglong_num	{ Lex->create_info.min_rows= $3; Lex->create_info.used_fields|= HA_CREATE_USED_MIN_ROWS;}
	| AVG_ROW_LENGTH opt_equal ULONG_NUM	{ Lex->create_info.avg_row_length=$3; Lex->create_info.used_fields|= HA_CREATE_USED_AVG_ROW_LENGTH;}
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	| PASSWORD opt_equal TEXT_STRING_sys	{ Lex->create_info.password=$3.str; Lex->create_info.used_fields|= HA_CREATE_USED_PASSWORD; }
	| COMMENT_SYM opt_equal TEXT_STRING_sys	{ Lex->create_info.comment=$3.str; Lex->create_info.used_fields|= HA_CREATE_USED_COMMENT; }
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	| AUTO_INC opt_equal ulonglong_num	{ Lex->create_info.auto_increment_value=$3; Lex->create_info.used_fields|= HA_CREATE_USED_AUTO;}
	| PACK_KEYS_SYM opt_equal ULONG_NUM	{ Lex->create_info.table_options|= $3 ? HA_OPTION_PACK_KEYS : HA_OPTION_NO_PACK_KEYS; Lex->create_info.used_fields|= HA_CREATE_USED_PACK_KEYS;}
	| PACK_KEYS_SYM opt_equal DEFAULT	{ Lex->create_info.table_options&= ~(HA_OPTION_PACK_KEYS | HA_OPTION_NO_PACK_KEYS); Lex->create_info.used_fields|= HA_CREATE_USED_PACK_KEYS;}
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	| CHECKSUM_SYM opt_equal ULONG_NUM	{ Lex->create_info.table_options|= $3 ? HA_OPTION_CHECKSUM : HA_OPTION_NO_CHECKSUM; Lex->create_info.used_fields|= HA_CREATE_USED_CHECKSUM; }
	| DELAY_KEY_WRITE_SYM opt_equal ULONG_NUM { Lex->create_info.table_options|= $3 ? HA_OPTION_DELAY_KEY_WRITE : HA_OPTION_NO_DELAY_KEY_WRITE;  Lex->create_info.used_fields|= HA_CREATE_USED_DELAY_KEY_WRITE; }
	| ROW_FORMAT_SYM opt_equal row_types	{ Lex->create_info.row_type= $3;  Lex->create_info.used_fields|= HA_CREATE_USED_ROW_FORMAT; }
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	| RAID_TYPE opt_equal raid_types	{ Lex->create_info.raid_type= $3; Lex->create_info.used_fields|= HA_CREATE_USED_RAID;}
	| RAID_CHUNKS opt_equal ULONG_NUM	{ Lex->create_info.raid_chunks= $3; Lex->create_info.used_fields|= HA_CREATE_USED_RAID;}
	| RAID_CHUNKSIZE opt_equal ULONG_NUM	{ Lex->create_info.raid_chunksize= $3*RAID_BLOCK_SIZE; Lex->create_info.used_fields|= HA_CREATE_USED_RAID;}
	| UNION_SYM opt_equal '(' table_list ')'
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	  {
	    /* Move the union list to the merge_list */
	    LEX *lex=Lex;
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	    TABLE_LIST *table_list= lex->select_lex.get_table_list();
	    lex->create_info.merge_list= lex->select_lex.table_list;
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	    lex->create_info.merge_list.elements--;
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	    lex->create_info.merge_list.first=
	      (byte*) (table_list->next_local);
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	    lex->select_lex.table_list.elements=1;
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	    lex->select_lex.table_list.next=
	      (byte**) &(table_list->next_local);
	    table_list->next_local= 0;
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	    lex->create_info.used_fields|= HA_CREATE_USED_UNION;
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	  }
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	| default_charset
	| default_collation
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	| INSERT_METHOD opt_equal merge_insert_types   { Lex->create_info.merge_insert_method= $3; Lex->create_info.used_fields|= HA_CREATE_USED_INSERT_METHOD;}
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	| DATA_SYM DIRECTORY_SYM opt_equal TEXT_STRING_sys { Lex->create_info.data_file_name= $4.str; Lex->create_info.used_fields|= HA_CREATE_USED_DATADIR; }
	| INDEX_SYM DIRECTORY_SYM opt_equal TEXT_STRING_sys { Lex->create_info.index_file_name= $4.str;  Lex->create_info.used_fields|= HA_CREATE_USED_INDEXDIR; }
        ;
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default_charset:
        opt_default charset opt_equal charset_name_or_default
        {
          HA_CREATE_INFO *cinfo= &Lex->create_info;
          if ((cinfo->used_fields & HA_CREATE_USED_DEFAULT_CHARSET) &&
               cinfo->default_table_charset && $4 &&
               !my_charset_same(cinfo->default_table_charset,$4))
          {
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            my_error(ER_CONFLICTING_DECLARATIONS, MYF(0),
                     "CHARACTER SET ", cinfo->default_table_charset->csname,
                     "CHARACTER SET ", $4->csname);
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            YYABORT;
          }
	  Lex->create_info.default_table_charset= $4;
          Lex->create_info.used_fields|= HA_CREATE_USED_DEFAULT_CHARSET;
        };

default_collation:
        opt_default COLLATE_SYM opt_equal collation_name_or_default
        {
          HA_CREATE_INFO *cinfo= &Lex->create_info;
          if ((cinfo->used_fields & HA_CREATE_USED_DEFAULT_CHARSET) &&
               cinfo->default_table_charset && $4 &&
               !my_charset_same(cinfo->default_table_charset,$4))
            {
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              my_error(ER_COLLATION_CHARSET_MISMATCH, MYF(0),
                       $4->name, cinfo->default_table_charset->csname);
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              YYABORT;
            }
            Lex->create_info.default_table_charset= $4;
            Lex->create_info.used_fields|= HA_CREATE_USED_DEFAULT_CHARSET;
        };

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storage_engines:
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	ident_or_text
	{
	  $$ = ha_resolve_by_name($1.str,$1.length);
	  if ($$ == DB_TYPE_UNKNOWN) {
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	    my_error(ER_UNKNOWN_STORAGE_ENGINE, MYF(0), $1.str);
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	    YYABORT;
	  }
	};
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row_types:
	DEFAULT		{ $$= ROW_TYPE_DEFAULT; }
	| FIXED_SYM	{ $$= ROW_TYPE_FIXED; }
	| DYNAMIC_SYM	{ $$= ROW_TYPE_DYNAMIC; }
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	| COMPRESSED_SYM { $$= ROW_TYPE_COMPRESSED; }
	| REDUNDANT_SYM	{ $$= ROW_TYPE_REDUNDANT; }
	| COMPACT_SYM	{ $$= ROW_TYPE_COMPACT; };
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raid_types:
	RAID_STRIPED_SYM { $$= RAID_TYPE_0; }
	| RAID_0_SYM	 { $$= RAID_TYPE_0; }
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	| ULONG_NUM	 { $$=$1;};
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merge_insert_types:
       NO_SYM            { $$= MERGE_INSERT_DISABLED; }
       | FIRST_SYM       { $$= MERGE_INSERT_TO_FIRST; }
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       | LAST_SYM        { $$= MERGE_INSERT_TO_LAST; };
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opt_select_from:
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	opt_limit_clause {}
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	| select_from select_lock_type;
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udf_func_type:
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	/* empty */	{ $$ = UDFTYPE_FUNCTION; }
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	| AGGREGATE_SYM { $$ = UDFTYPE_AGGREGATE; };
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udf_type:
	STRING_SYM {$$ = (int) STRING_RESULT; }
	| REAL {$$ = (int) REAL_RESULT; }
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        | DECIMAL_SYM {$$ = (int) DECIMAL_RESULT; }
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	| INT_SYM {$$ = (int) INT_RESULT; };
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field_list:
	  field_list_item
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	| field_list ',' field_list_item;
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field_list_item:
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	   column_def
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         | key_def
         ;

column_def:
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	  field_spec opt_check_constraint
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	| field_spec references
	  {
	    Lex->col_list.empty();		/* Alloced by sql_alloc */
	  }
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	;
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key_def:
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	key_type opt_ident key_alg '(' key_list ')'
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	  {
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	    LEX *lex=Lex;
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	    lex->key_list.push_back(new Key($1,$2, $3, 0, lex->col_list));
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	    lex->col_list.empty();		/* Alloced by sql_alloc */
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	  }
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	| opt_constraint constraint_key_type opt_ident key_alg '(' key_list ')'
	  {
	    LEX *lex=Lex;
	    const char *key_name= $3 ? $3:$1;
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	    lex->key_list.push_back(new Key($2, key_name, $4, 0,
				    lex->col_list));
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	    lex->col_list.empty();		/* Alloced by sql_alloc */
	  }
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	| opt_constraint FOREIGN KEY_SYM opt_ident '(' key_list ')' references
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	  {
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	    LEX *lex=Lex;
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	    lex->key_list.push_back(new foreign_key($4 ? $4:$1, lex->col_list,
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				    $8,
				    lex->ref_list,
				    lex->fk_delete_opt,
				    lex->fk_update_opt,
				    lex->fk_match_option));
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	    lex->key_list.push_back(new Key(Key::MULTIPLE, $4 ? $4 : $1,
					    HA_KEY_ALG_UNDEF, 1,
					    lex->col_list));
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	    lex->col_list.empty();		/* Alloced by sql_alloc */
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	  }
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	| constraint opt_check_constraint
	  {
	    Lex->col_list.empty();		/* Alloced by sql_alloc */
	  }
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	| opt_constraint check_constraint
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	  {
	    Lex->col_list.empty();		/* Alloced by sql_alloc */
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	  }
	;

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opt_check_constraint:
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	/* empty */
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	| check_constraint
	;

check_constraint:
	CHECK_SYM expr
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	;
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opt_constraint:
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	/* empty */		{ $$=(char*) 0; }
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	| constraint		{ $$= $1; }
	;

constraint:
	CONSTRAINT opt_ident	{ $$=$2; }
	;
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field_spec:
	field_ident
	 {
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	   LEX *lex=Lex;
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	   lex->length=lex->dec=0; lex->type=0;
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	   lex->default_value= lex->on_update_value= 0;
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           lex->comment=null_lex_str;
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	   lex->charset=NULL;
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	 }
	type opt_attribute
	{
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	  LEX *lex=Lex;
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	  if (add_field_to_list(lex->thd, $1.str,
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				(enum enum_field_types) $3,
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				lex->length,lex->dec,lex->type,
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				lex->default_value, lex->on_update_value, 
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                                &lex->comment,
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				lex->change,&lex->interval_list,lex->charset,
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				lex->uint_geom_type))
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	    YYABORT;
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	};
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type:
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	int_type opt_len field_options	{ $$=$1; }
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	| real_type opt_precision field_options { $$=$1; }
	| FLOAT_SYM float_options field_options { $$=FIELD_TYPE_FLOAT; }
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	| BIT_SYM			{ Lex->length= (char*) "1";
					  $$=FIELD_TYPE_BIT; }
	| BIT_SYM '(' NUM ')'		{ Lex->length= $3.str;
					  $$=FIELD_TYPE_BIT; }
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	| BOOL_SYM			{ Lex->length=(char*) "1";
					  $$=FIELD_TYPE_TINY; }
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	| BOOLEAN_SYM			{ Lex->length=(char*) "1";
					  $$=FIELD_TYPE_TINY; }
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	| char '(' NUM ')' opt_binary	{ Lex->length=$3.str;
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					  $$=FIELD_TYPE_STRING; }
	| char opt_binary		{ Lex->length=(char*) "1";
					  $$=FIELD_TYPE_STRING; }
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	| nchar '(' NUM ')'		{ Lex->length=$3.str;
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					  $$=FIELD_TYPE_STRING;
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					  Lex->charset=national_charset_info; }
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	| nchar				{ Lex->length=(char*) "1";
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					  $$=FIELD_TYPE_STRING;
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					  Lex->charset=national_charset_info; }
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	| BINARY '(' NUM ')'		{ Lex->length=$3.str;
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					  Lex->charset=&my_charset_bin;
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					  $$=FIELD_TYPE_STRING; }
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	| BINARY			{ Lex->length= (char*) "1";
					  Lex->charset=&my_charset_bin;
					  $$=FIELD_TYPE_STRING; }
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	| varchar '(' NUM ')' opt_binary { Lex->length=$3.str;
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					  $$= MYSQL_TYPE_VARCHAR; }
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	| nvarchar '(' NUM ')'		{ Lex->length=$3.str;
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					  $$= MYSQL_TYPE_VARCHAR;
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					  Lex->charset=national_charset_info; }
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	| VARBINARY '(' NUM ')' 	{ Lex->length=$3.str;
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					  Lex->charset=&my_charset_bin;
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					  $$= MYSQL_TYPE_VARCHAR; }
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	| YEAR_SYM opt_len field_options { $$=FIELD_TYPE_YEAR; }
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	| DATE_SYM			{ $$=FIELD_TYPE_DATE; }
	| TIME_SYM			{ $$=FIELD_TYPE_TIME; }
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	| TIMESTAMP opt_len
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	  {
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	    if (YYTHD->variables.sql_mode & MODE_MAXDB)
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	      $$=FIELD_TYPE_DATETIME;
	    else
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            {
              /* 
                Unlike other types TIMESTAMP fields are NOT NULL by default.
              */
              Lex->type|= NOT_NULL_FLAG;
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	      $$=FIELD_TYPE_TIMESTAMP;
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            }
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	   }
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	| DATETIME			{ $$=FIELD_TYPE_DATETIME; }
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	| TINYBLOB			{ Lex->charset=&my_charset_bin;
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					  $$=FIELD_TYPE_TINY_BLOB; }
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	| BLOB_SYM opt_len		{ Lex->charset=&my_charset_bin;
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					  $$=FIELD_TYPE_BLOB; }
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	| spatial_type
          {
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#ifdef HAVE_SPATIAL
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            Lex->charset=&my_charset_bin;
            Lex->uint_geom_type= (uint)$1;
            $$=FIELD_TYPE_GEOMETRY;
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#else
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            my_error(ER_FEATURE_DISABLED, MYF(0),
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                     sym_group_geom.name, sym_group_geom.needed_define);
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            YYABORT;
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#endif
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          }
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	| MEDIUMBLOB			{ Lex->charset=&my_charset_bin;
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					  $$=FIELD_TYPE_MEDIUM_BLOB; }
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	| LONGBLOB			{ Lex->charset=&my_charset_bin;
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					  $$=FIELD_TYPE_LONG_BLOB; }
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	| LONG_SYM VARBINARY		{ Lex->charset=&my_charset_bin;
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					  $$=FIELD_TYPE_MEDIUM_BLOB; }
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	| LONG_SYM varchar opt_binary	{ $$=FIELD_TYPE_MEDIUM_BLOB; }
	| TINYTEXT opt_binary		{ $$=FIELD_TYPE_TINY_BLOB; }
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	| TEXT_SYM opt_len opt_binary	{ $$=FIELD_TYPE_BLOB; }
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	| MEDIUMTEXT opt_binary		{ $$=FIELD_TYPE_MEDIUM_BLOB; }
	| LONGTEXT opt_binary		{ $$=FIELD_TYPE_LONG_BLOB; }
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	| DECIMAL_SYM float_options field_options
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                                        { $$=FIELD_TYPE_NEWDECIMAL;}
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	| NUMERIC_SYM float_options field_options
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                                        { $$=FIELD_TYPE_NEWDECIMAL;}
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	| FIXED_SYM float_options field_options
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                                        { $$=FIELD_TYPE_NEWDECIMAL;}
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	| ENUM {Lex->interval_list.empty();} '(' string_list ')' opt_binary
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	  { $$=FIELD_TYPE_ENUM; }
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	| SET { Lex->interval_list.empty();} '(' string_list ')' opt_binary
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	  { $$=FIELD_TYPE_SET; }
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	| LONG_SYM opt_binary		{ $$=FIELD_TYPE_MEDIUM_BLOB; }
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	| SERIAL_SYM
	  {
	    $$=FIELD_TYPE_LONGLONG;
	    Lex->type|= (AUTO_INCREMENT_FLAG | NOT_NULL_FLAG | UNSIGNED_FLAG |
		         UNIQUE_FLAG);
	  }
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	;
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spatial_type:
	GEOMETRY_SYM	      { $$= Field::GEOM_GEOMETRY; }
	| GEOMETRYCOLLECTION  { $$= Field::GEOM_GEOMETRYCOLLECTION; }
	| POINT_SYM           { $$= Field::GEOM_POINT; }
	| MULTIPOINT          { $$= Field::GEOM_MULTIPOINT; }
	| LINESTRING          { $$= Field::GEOM_LINESTRING; }
	| MULTILINESTRING     { $$= Field::GEOM_MULTILINESTRING; }
	| POLYGON             { $$= Field::GEOM_POLYGON; }
	| MULTIPOLYGON        { $$= Field::GEOM_MULTIPOLYGON; }
	;

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char:
	CHAR_SYM {}
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	;

nchar:
	NCHAR_SYM {}
	| NATIONAL_SYM CHAR_SYM {}
	;
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varchar:
	char VARYING {}
	| VARCHAR {}
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	;

nvarchar:
	NATIONAL_SYM VARCHAR {}
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	| NVARCHAR_SYM {}
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	| NCHAR_SYM VARCHAR {}
	| NATIONAL_SYM CHAR_SYM VARYING {}
	| NCHAR_SYM VARYING {}
	;
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int_type:
	INT_SYM		{ $$=FIELD_TYPE_LONG; }
	| TINYINT	{ $$=FIELD_TYPE_TINY; }
	| SMALLINT	{ $$=FIELD_TYPE_SHORT; }
	| MEDIUMINT	{ $$=FIELD_TYPE_INT24; }
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	| BIGINT	{ $$=FIELD_TYPE_LONGLONG; };
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real_type:
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	REAL		{ $$= YYTHD->variables.sql_mode & MODE_REAL_AS_FLOAT ?
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			      FIELD_TYPE_FLOAT : FIELD_TYPE_DOUBLE; }
	| DOUBLE_SYM	{ $$=FIELD_TYPE_DOUBLE; }
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	| DOUBLE_SYM PRECISION { $$=FIELD_TYPE_DOUBLE; };
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float_options:
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        /* empty */		{ Lex->dec=Lex->length= (char*)0; }
        | '(' NUM ')'		{ Lex->length=$2.str; Lex->dec= (char*)0; }
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	| precision		{};
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precision:
	'(' NUM ',' NUM ')'
	{
	  LEX *lex=Lex;
	  lex->length=$2.str; lex->dec=$4.str;
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	};
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field_options:
	/* empty */		{}
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	| field_opt_list	{};
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field_opt_list:
	field_opt_list field_option {}
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	| field_option {};
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field_option:
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	SIGNED_SYM	{}
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	| UNSIGNED	{ Lex->type|= UNSIGNED_FLAG;}
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	| ZEROFILL	{ Lex->type|= UNSIGNED_FLAG | ZEROFILL_FLAG; };
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opt_len:
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	/* empty */	{ Lex->length=(char*) 0; } /* use default length */
	| '(' NUM ')'	{ Lex->length= $2.str; };
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opt_precision:
	/* empty */	{}
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	| precision	{};
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opt_attribute:
	/* empty */ {}
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	| opt_attribute_list {};
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opt_attribute_list:
	opt_attribute_list attribute {}
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	| attribute;
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attribute:
	NULL_SYM	  { Lex->type&= ~ NOT_NULL_FLAG; }
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	| not NULL_SYM	  { Lex->type|= NOT_NULL_FLAG; }
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	| DEFAULT now_or_signed_literal { Lex->default_value=$2; }
	| ON UPDATE_SYM NOW_SYM optional_braces 
          { Lex->on_update_value= new Item_func_now_local(); }
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	| AUTO_INC	  { Lex->type|= AUTO_INCREMENT_FLAG | NOT_NULL_FLAG; }
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	| SERIAL_SYM DEFAULT VALUE_SYM
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	  { 
	    LEX *lex=Lex;
	    lex->type|= AUTO_INCREMENT_FLAG | NOT_NULL_FLAG | UNIQUE_FLAG; 
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	    lex->alter_info.flags|= ALTER_ADD_INDEX; 
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	  }
	| opt_primary KEY_SYM 
	  {
	    LEX *lex=Lex;
	    lex->type|= PRI_KEY_FLAG | NOT_NULL_FLAG; 
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	    lex->alter_info.flags|= ALTER_ADD_INDEX; 
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	  }
	| UNIQUE_SYM	  
	  {
	    LEX *lex=Lex;
	    lex->type|= UNIQUE_FLAG; 
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	    lex->alter_info.flags|= ALTER_ADD_INDEX; 
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	  }
	| UNIQUE_SYM KEY_SYM 
	  {
	    LEX *lex=Lex;
	    lex->type|= UNIQUE_KEY_FLAG; 
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	    lex->alter_info.flags|= ALTER_ADD_INDEX; 
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	  }
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	| COMMENT_SYM TEXT_STRING_sys { Lex->comment= $2; }
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	| BINARY { Lex->type|= BINCMP_FLAG; }
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	| COLLATE_SYM collation_name
	  {
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	    if (Lex->charset && !my_charset_same(Lex->charset,$2))
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	    {
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	      my_error(ER_COLLATION_CHARSET_MISMATCH, MYF(0),
                       $2->name,Lex->charset->csname);
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	      YYABORT;
	    }
	    else
	    {
	      Lex->charset=$2;
	    }
	  }
	;
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now_or_signed_literal:
        NOW_SYM optional_braces { $$= new Item_func_now_local(); }
        | signed_literal { $$=$1; }
        ;

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charset:
	CHAR_SYM SET	{}
	| CHARSET	{}
	;
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charset_name:
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	ident_or_text
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	{
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	  if (!($$=get_charset_by_csname($1.str,MY_CS_PRIMARY,MYF(0))))
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	  {
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	    my_error(ER_UNKNOWN_CHARACTER_SET, MYF(0), $1.str);
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	    YYABORT;
	  }
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	}
	| BINARY { $$= &my_charset_bin; }
	;
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charset_name_or_default:
	charset_name { $$=$1;   }
	| DEFAULT    { $$=NULL; } ;
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old_or_new_charset_name:
	ident_or_text
	{
	  if (!($$=get_charset_by_csname($1.str,MY_CS_PRIMARY,MYF(0))) &&
	      !($$=get_old_charset_by_name($1.str)))
	  {
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	    my_error(ER_UNKNOWN_CHARACTER_SET, MYF(0), $1.str);
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	    YYABORT;
	  }
	}
	| BINARY { $$= &my_charset_bin; }
	;

old_or_new_charset_name_or_default:
	old_or_new_charset_name { $$=$1;   }
	| DEFAULT    { $$=NULL; } ;

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collation_name:
3018
	ident_or_text
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	{
	  if (!($$=get_charset_by_name($1.str,MYF(0))))
	  {
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	    my_error(ER_UNKNOWN_COLLATION, MYF(0), $1.str);
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	    YYABORT;
	  }
	};

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opt_collate:
	/* empty */	{ $$=NULL; }
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	| COLLATE_SYM collation_name_or_default { $$=$2; }
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	;

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collation_name_or_default:
	collation_name { $$=$1;   }
	| DEFAULT    { $$=NULL; } ;

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opt_default:
	/* empty */	{}
	| DEFAULT	{};

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opt_binary:
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	/* empty */			{ Lex->charset=NULL; }
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	| ASCII_SYM			{ Lex->charset=&my_charset_latin1; }
	| BYTE_SYM			{ Lex->charset=&my_charset_bin; }
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	| UNICODE_SYM
	{
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	  if (!(Lex->charset=get_charset_by_csname("ucs2",
                                                   MY_CS_PRIMARY,MYF(0))))
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	  {
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	    my_error(ER_UNKNOWN_CHARACTER_SET, MYF(0), "ucs2");
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	    YYABORT;
	  }
	}
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	| charset charset_name	{ Lex->charset=$2; } ;
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opt_primary:
	/* empty */
	| PRIMARY_SYM
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	;
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references:
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	REFERENCES table_ident
	{
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	  LEX *lex=Lex;
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	  lex->fk_delete_opt= lex->fk_update_opt= lex->fk_match_option= 0;
	  lex->ref_list.empty();
	}
	opt_ref_list
	{
	  $$=$2;
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	};
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opt_ref_list:
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	/* empty */ opt_on_delete {}
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	| '(' ref_list ')' opt_on_delete {};
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ref_list:
	ref_list ',' ident	{ Lex->ref_list.push_back(new key_part_spec($3.str)); }
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	| ident			{ Lex->ref_list.push_back(new key_part_spec($1.str)); };
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opt_on_delete:
	/* empty */ {}
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	| opt_on_delete_list {};
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opt_on_delete_list:
	opt_on_delete_list opt_on_delete_item {}
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	| opt_on_delete_item {};
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opt_on_delete_item:
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	ON DELETE_SYM delete_option   { Lex->fk_delete_opt= $3; }
	| ON UPDATE_SYM delete_option { Lex->fk_update_opt= $3; }
	| MATCH FULL	{ Lex->fk_match_option= foreign_key::FK_MATCH_FULL; }
	| MATCH PARTIAL { Lex->fk_match_option= foreign_key::FK_MATCH_PARTIAL; }
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	| MATCH SIMPLE_SYM { Lex->fk_match_option= foreign_key::FK_MATCH_SIMPLE; };
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delete_option:
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	RESTRICT	 { $$= (int) foreign_key::FK_OPTION_RESTRICT; }
	| CASCADE	 { $$= (int) foreign_key::FK_OPTION_CASCADE; }
	| SET NULL_SYM   { $$= (int) foreign_key::FK_OPTION_SET_NULL; }
	| NO_SYM ACTION  { $$= (int) foreign_key::FK_OPTION_NO_ACTION; }
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	| SET DEFAULT    { $$= (int) foreign_key::FK_OPTION_DEFAULT;  };
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key_type:
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	key_or_index			    { $$= Key::MULTIPLE; }
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	| FULLTEXT_SYM opt_key_or_index	    { $$= Key::FULLTEXT; }
	| SPATIAL_SYM opt_key_or_index
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	  {
#ifdef HAVE_SPATIAL
	    $$= Key::SPATIAL;
#else
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	    my_error(ER_FEATURE_DISABLED, MYF(0),
                     sym_group_geom.name, sym_group_geom.needed_define);
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	    YYABORT;
#endif
	  };
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constraint_key_type:
	PRIMARY_SYM KEY_SYM  { $$= Key::PRIMARY; }
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	| UNIQUE_SYM opt_key_or_index { $$= Key::UNIQUE; };
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key_or_index:
	KEY_SYM {}
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	| INDEX_SYM {};
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opt_key_or_index:
	/* empty */ {}
	| key_or_index
	;

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keys_or_index:
	KEYS {}
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	| INDEX_SYM {}
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	| INDEXES {};
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opt_unique_or_fulltext:
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	/* empty */	{ $$= Key::MULTIPLE; }
	| UNIQUE_SYM	{ $$= Key::UNIQUE; }
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	| FULLTEXT_SYM	{ $$= Key::FULLTEXT;}
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	| SPATIAL_SYM
	  {
#ifdef HAVE_SPATIAL
	    $$= Key::SPATIAL;
#else
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            my_error(ER_FEATURE_DISABLED, MYF(0),
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                     sym_group_geom.name, sym_group_geom.needed_define);
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	    YYABORT;
#endif
	  }
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        ;
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key_alg:
3152
	/* empty */		   { $$= HA_KEY_ALG_UNDEF; }
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	| USING opt_btree_or_rtree { $$= $2; }
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	| TYPE_SYM opt_btree_or_rtree  { $$= $2; };
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opt_btree_or_rtree:
	BTREE_SYM	{ $$= HA_KEY_ALG_BTREE; }
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	| RTREE_SYM
	  {
	    $$= HA_KEY_ALG_RTREE;
	  }
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	| HASH_SYM	{ $$= HA_KEY_ALG_HASH; };
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key_list:
	key_list ',' key_part order_dir { Lex->col_list.push_back($3); }
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	| key_part order_dir		{ Lex->col_list.push_back($1); };
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key_part:
	ident			{ $$=new key_part_spec($1.str); }
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	| ident '(' NUM ')'	
        {
          int key_part_len= atoi($3.str);
          if (!key_part_len)
          {
3175
            my_error(ER_KEY_PART_0, MYF(0), $1.str);
3176 3177 3178
          }
          $$=new key_part_spec($1.str,(uint) key_part_len);
        };
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opt_ident:
	/* empty */	{ $$=(char*) 0; }	/* Defaultlength */
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	| field_ident	{ $$=$1.str; };
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opt_component:
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        /* empty */      { $$= null_lex_str; }
        | '.' ident      { $$= $2; };
3187

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string_list:
	text_string			{ Lex->interval_list.push_back($1); }
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	| string_list ',' text_string	{ Lex->interval_list.push_back($3); };
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/*
** Alter table
*/

alter:
	ALTER opt_ignore TABLE_SYM table_ident
	{
3199
	  THD *thd= YYTHD;
3200
	  LEX *lex= thd->lex;
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	  lex->sql_command= SQLCOM_ALTER_TABLE;
	  lex->name= 0;
	  lex->duplicates= DUP_ERROR; 
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	  if (!lex->select_lex.add_table_to_list(thd, $4, NULL,
						 TL_OPTION_UPDATING))
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	    YYABORT;
	  lex->create_list.empty();
	  lex->key_list.empty();
	  lex->col_list.empty();
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          lex->select_lex.init_order();
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	  lex->select_lex.db=lex->name=0;
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	  bzero((char*) &lex->create_info,sizeof(lex->create_info));
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	  lex->create_info.db_type= DB_TYPE_DEFAULT;
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	  lex->create_info.default_table_charset= NULL;
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	  lex->create_info.row_type= ROW_TYPE_NOT_USED;
3216
	  lex->alter_info.reset();
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	  lex->alter_info.flags= 0;
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	}
3219 3220
	alter_list
	{}
3221
	| ALTER DATABASE ident_or_empty
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          {
            Lex->create_info.default_table_charset= NULL;
            Lex->create_info.used_fields= 0;
          }
          opt_create_database_options
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	  {
	    LEX *lex=Lex;
	    lex->sql_command=SQLCOM_ALTER_DB;
3230
	    lex->name= $3;
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	  }
	| ALTER PROCEDURE sp_name
	  {
	    LEX *lex= Lex;

	    bzero((char *)&lex->sp_chistics, sizeof(st_sp_chistics));
          }
	  sp_a_chistics
	  {
	    LEX *lex=Lex;

	    lex->sql_command= SQLCOM_ALTER_PROCEDURE;
	    lex->spname= $3;
	  }
	| ALTER FUNCTION_SYM sp_name
	  {
	    LEX *lex= Lex;
3248

3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270
	    bzero((char *)&lex->sp_chistics, sizeof(st_sp_chistics));
          }
	  sp_a_chistics
	  {
	    LEX *lex=Lex;

	    lex->sql_command= SQLCOM_ALTER_FUNCTION;
	    lex->spname= $3;
	  }
	| ALTER algorithm VIEW_SYM table_ident
	  {
	    THD *thd= YYTHD;
	    LEX *lex= thd->lex;
	    lex->sql_command= SQLCOM_CREATE_VIEW;
	    lex->create_view_mode= VIEW_ALTER;
	    lex->select_lex.resolve_mode= SELECT_LEX::SELECT_MODE;
	    /* first table in list is target VIEW name */
	    lex->select_lex.add_table_to_list(thd, $4, NULL, 0);
	  }
	  opt_view_list AS select_init check_option
	  {}
	;
3271

3272 3273 3274 3275
ident_or_empty:
	/* empty */  { $$= 0; }
	| ident      { $$= $1.str; };

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alter_list:
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	| DISCARD TABLESPACE { Lex->alter_info.tablespace_op= DISCARD_TABLESPACE; }
	| IMPORT TABLESPACE { Lex->alter_info.tablespace_op= IMPORT_TABLESPACE; }
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        | alter_list_item
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	| alter_list ',' alter_list_item;
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add_column:
3283
	ADD opt_column
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	{
	  LEX *lex=Lex;
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	  lex->change=0;
	  lex->alter_info.flags|= ALTER_ADD_COLUMN;
3288
	};
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alter_list_item:
3291 3292 3293 3294
	add_column column_def opt_place { }
	| ADD key_def
	  {
	    Lex->alter_info.flags|= ALTER_ADD_INDEX;
3295
	  }
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	| add_column '(' field_list ')'
          {
	    Lex->alter_info.flags|= ALTER_ADD_COLUMN | ALTER_ADD_INDEX;
          }
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	| CHANGE opt_column field_ident
	  {
	     LEX *lex=Lex;
3303
	     lex->change= $3.str;
3304
	     lex->alter_info.flags|= ALTER_CHANGE_COLUMN;
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	  }
3306
          field_spec opt_place
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        | MODIFY_SYM opt_column field_ident
          {
            LEX *lex=Lex;
3310
            lex->length=lex->dec=0; lex->type=0;
3311
            lex->default_value= lex->on_update_value= 0;
3312
            lex->comment=null_lex_str;
3313
	    lex->charset= NULL;
3314
	    lex->alter_info.flags|= ALTER_CHANGE_COLUMN;
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          }
          type opt_attribute
          {
            LEX *lex=Lex;
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            if (add_field_to_list(lex->thd,$3.str,
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                                  (enum enum_field_types) $5,
                                  lex->length,lex->dec,lex->type,
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                                  lex->default_value, lex->on_update_value,
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                                  &lex->comment,
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				  $3.str, &lex->interval_list, lex->charset,
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				  lex->uint_geom_type))
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	       YYABORT;
          }
          opt_place
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	| DROP opt_column field_ident opt_restrict
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	  {
	    LEX *lex=Lex;
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	    lex->alter_info.drop_list.push_back(new Alter_drop(Alter_drop::COLUMN,
3333
                                                               $3.str));
3334
	    lex->alter_info.flags|= ALTER_DROP_COLUMN;
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	  }
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	| DROP FOREIGN KEY_SYM opt_ident
          {
	    Lex->alter_info.flags|= ALTER_DROP_INDEX;
          }
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	| DROP PRIMARY_SYM KEY_SYM
	  {
	    LEX *lex=Lex;
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	    lex->alter_info.drop_list.push_back(new Alter_drop(Alter_drop::KEY,
				               primary_key_name));
	    lex->alter_info.flags|= ALTER_DROP_INDEX;
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	  }
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	| DROP key_or_index field_ident
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	  {
	    LEX *lex=Lex;
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	    lex->alter_info.drop_list.push_back(new Alter_drop(Alter_drop::KEY,
					                       $3.str));
	    lex->alter_info.flags|= ALTER_DROP_INDEX;
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	  }
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	| DISABLE_SYM KEYS
          {
	    LEX *lex=Lex;
            lex->alter_info.keys_onoff= DISABLE;
	    lex->alter_info.flags|= ALTER_KEYS_ONOFF;
          }
	| ENABLE_SYM KEYS
          {
	    LEX *lex=Lex;
            lex->alter_info.keys_onoff= ENABLE;
	    lex->alter_info.flags|= ALTER_KEYS_ONOFF;
          }
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	| ALTER opt_column field_ident SET DEFAULT signed_literal
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	  {
	    LEX *lex=Lex;
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	    lex->alter_info.alter_list.push_back(new Alter_column($3.str,$6));
3370
	    lex->alter_info.flags|= ALTER_CHANGE_COLUMN_DEFAULT;
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	  }
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	| ALTER opt_column field_ident DROP DEFAULT
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	  {
	    LEX *lex=Lex;
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	    lex->alter_info.alter_list.push_back(new Alter_column($3.str,
                                                                  (Item*) 0));
3377
	    lex->alter_info.flags|= ALTER_CHANGE_COLUMN_DEFAULT;
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	  }
3379
	| RENAME opt_to table_ident
3380
	  {
3381
	    LEX *lex=Lex;
3382
	    lex->select_lex.db=$3->db.str;
3383
	    lex->name= $3->table.str;
3384 3385 3386
            if (check_table_name($3->table.str,$3->table.length) ||
                $3->db.str && check_db_name($3->db.str))
            {
3387
              my_error(ER_WRONG_TABLE_NAME, MYF(0), $3->table.str);
3388 3389
              YYABORT;
            }
3390
	    lex->alter_info.flags|= ALTER_RENAME;
3391
	  }
3392 3393 3394 3395 3396 3397 3398 3399 3400 3401
	| CONVERT_SYM TO_SYM charset charset_name_or_default opt_collate
	  {
	    if (!$4)
	    {
	      THD *thd= YYTHD;
	      $4= thd->variables.collation_database;
	    }
	    $5= $5 ? $5 : $4;
	    if (!my_charset_same($4,$5))
	    {
3402 3403
	      my_error(ER_COLLATION_CHARSET_MISMATCH, MYF(0),
                       $5->name, $4->csname);
3404 3405
	      YYABORT;
	    }
3406
	    LEX *lex= Lex;
3407
	    lex->create_info.table_charset=
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	      lex->create_info.default_table_charset= $5;
	    lex->create_info.used_fields|= (HA_CREATE_USED_CHARSET |
					    HA_CREATE_USED_DEFAULT_CHARSET);
3411
	    lex->alter_info.flags|= ALTER_CONVERT;
3412
	  }
3413
        | create_table_options_space_separated
3414 3415
	  {
	    LEX *lex=Lex;
3416
	    lex->alter_info.flags|= ALTER_OPTIONS;
3417
	  }
3418
	| order_clause
3419 3420
	  {
	    LEX *lex=Lex;
3421
	    lex->alter_info.flags|= ALTER_ORDER;
3422
	  };
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opt_column:
	/* empty */	{}
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	| COLUMN_SYM	{};
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opt_ignore:
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	/* empty */	{ Lex->ignore= 0;}
	| IGNORE_SYM	{ Lex->ignore= 1;}
	;
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opt_restrict:
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	/* empty */	{ Lex->drop_mode= DROP_DEFAULT; }
	| RESTRICT	{ Lex->drop_mode= DROP_RESTRICT; }
	| CASCADE	{ Lex->drop_mode= DROP_CASCADE; }
	;
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opt_place:
	/* empty */	{}
	| AFTER_SYM ident { store_position_for_column($2.str); }
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	| FIRST_SYM	  { store_position_for_column(first_keyword); };
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opt_to:
	/* empty */	{}
	| TO_SYM	{}
3447
	| EQ		{}
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	| AS		{};
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/*
3451
  SLAVE START and SLAVE STOP are deprecated. We keep them for compatibility.
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*/

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slave:
3455
	  START_SYM SLAVE slave_thread_opts
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          {
	    LEX *lex=Lex;
            lex->sql_command = SQLCOM_SLAVE_START;
	    lex->type = 0;
	    /* We'll use mi structure for UNTIL options */
	    bzero((char*) &lex->mi, sizeof(lex->mi));
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            /* If you change this code don't forget to update SLAVE START too */
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          }
          slave_until
          {}
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        | STOP_SYM SLAVE slave_thread_opts
          {
	    LEX *lex=Lex;
            lex->sql_command = SQLCOM_SLAVE_STOP;
	    lex->type = 0;
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            /* If you change this code don't forget to update SLAVE STOP too */
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          }
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	| SLAVE START_SYM slave_thread_opts
         {
	   LEX *lex=Lex;
           lex->sql_command = SQLCOM_SLAVE_START;
	   lex->type = 0;
3478 3479 3480 3481 3482
	    /* We'll use mi structure for UNTIL options */
	    bzero((char*) &lex->mi, sizeof(lex->mi));
          }
          slave_until
          {}
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	| SLAVE STOP_SYM slave_thread_opts
         {
	   LEX *lex=Lex;
           lex->sql_command = SQLCOM_SLAVE_STOP;
	   lex->type = 0;
         }
        ;

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start:
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	START_SYM TRANSACTION_SYM start_transaction_opts
        {
           Lex->sql_command = SQLCOM_BEGIN;
           Lex->start_transaction_opt= $3;
        }
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	;

3500 3501 3502 3503 3504 3505
start_transaction_opts:
        /*empty*/ { $$ = 0; }
        | WITH CONSISTENT_SYM SNAPSHOT_SYM
        {
           $$= MYSQL_START_TRANS_OPT_WITH_CONS_SNAPSHOT;
        }
3506
        ;
3507

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slave_thread_opts:
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	{ Lex->slave_thd_opt= 0; }
	slave_thread_opt_list
3511
        {}
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	;
3513 3514

slave_thread_opt_list:
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	slave_thread_opt
3516 3517
	| slave_thread_opt_list ',' slave_thread_opt
	;
3518 3519

slave_thread_opt:
3520
	/*empty*/	{}
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	| SQL_THREAD	{ Lex->slave_thd_opt|=SLAVE_SQL; }
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	| RELAY_THREAD 	{ Lex->slave_thd_opt|=SLAVE_IO; }
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	;
3524

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slave_until:
	/*empty*/	{}
	| UNTIL_SYM slave_until_opts
          {
            LEX *lex=Lex;
            if ((lex->mi.log_file_name || lex->mi.pos) &&
                (lex->mi.relay_log_name || lex->mi.relay_log_pos) ||
                !((lex->mi.log_file_name && lex->mi.pos) ||
                  (lex->mi.relay_log_name && lex->mi.relay_log_pos)))
            {
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               my_message(ER_BAD_SLAVE_UNTIL_COND,
                          ER(ER_BAD_SLAVE_UNTIL_COND), MYF(0));
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               YYABORT;
            }

          }
	;

slave_until_opts:
       master_file_def
       | slave_until_opts ',' master_file_def ;


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restore:
	RESTORE_SYM table_or_tables
	{
	   Lex->sql_command = SQLCOM_RESTORE_TABLE;
	}
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	table_list FROM TEXT_STRING_sys
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        {
	  Lex->backup_dir = $6.str;
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        };
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backup:
	BACKUP_SYM table_or_tables
	{
	   Lex->sql_command = SQLCOM_BACKUP_TABLE;
	}
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	table_list TO_SYM TEXT_STRING_sys
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        {
	  Lex->backup_dir = $6.str;
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        };
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3568 3569 3570 3571 3572 3573
checksum:
        CHECKSUM_SYM table_or_tables
	{
	   LEX *lex=Lex;
	   lex->sql_command = SQLCOM_CHECKSUM;
	}
3574 3575
	table_list opt_checksum_type
        {}
3576 3577
	;

3578 3579 3580 3581 3582 3583
opt_checksum_type:
        /* nothing */  { Lex->check_opt.flags= 0; }
	| QUICK        { Lex->check_opt.flags= T_QUICK; }
	| EXTENDED_SYM { Lex->check_opt.flags= T_EXTEND; }
        ;

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repair:
3585
	REPAIR opt_no_write_to_binlog table_or_tables
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	{
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	   LEX *lex=Lex;
	   lex->sql_command = SQLCOM_REPAIR;
3589
           lex->no_write_to_binlog= $2;
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	   lex->check_opt.init();
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	}
3592 3593 3594
	table_list opt_mi_repair_type
	{}
	;
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opt_mi_repair_type:
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	/* empty */ { Lex->check_opt.flags = T_MEDIUM; }
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	| mi_repair_types {};
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mi_repair_types:
	mi_repair_type {}
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	| mi_repair_type mi_repair_types {};
3603

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mi_repair_type:
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	QUICK          { Lex->check_opt.flags|= T_QUICK; }
3606
	| EXTENDED_SYM { Lex->check_opt.flags|= T_EXTEND; }
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        | USE_FRM      { Lex->check_opt.sql_flags|= TT_USEFRM; };
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analyze:
3610
	ANALYZE_SYM opt_no_write_to_binlog table_or_tables
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	{
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	   LEX *lex=Lex;
	   lex->sql_command = SQLCOM_ANALYZE;
3614
           lex->no_write_to_binlog= $2;
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	   lex->check_opt.init();
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	}
3617 3618 3619
	table_list opt_mi_check_type
	{}
	;
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check:
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	CHECK_SYM table_or_tables
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	{
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	   LEX *lex=Lex;
	   lex->sql_command = SQLCOM_CHECK;
	   lex->check_opt.init();
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	}
3628 3629 3630
	table_list opt_mi_check_type
	{}
	;
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opt_mi_check_type:
	/* empty */ { Lex->check_opt.flags = T_MEDIUM; }
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	| mi_check_types {};
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mi_check_types:
	mi_check_type {}
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	| mi_check_type mi_check_types {};
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mi_check_type:
	QUICK      { Lex->check_opt.flags|= T_QUICK; }
	| FAST_SYM { Lex->check_opt.flags|= T_FAST; }
	| MEDIUM_SYM { Lex->check_opt.flags|= T_MEDIUM; }
	| EXTENDED_SYM { Lex->check_opt.flags|= T_EXTEND; }
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	| CHANGED  { Lex->check_opt.flags|= T_CHECK_ONLY_CHANGED; };
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optimize:
3648
	OPTIMIZE opt_no_write_to_binlog table_or_tables
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	{
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	   LEX *lex=Lex;
	   lex->sql_command = SQLCOM_OPTIMIZE;
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           lex->no_write_to_binlog= $2;
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	   lex->check_opt.init();
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	}
3655 3656 3657
	table_list opt_mi_check_type
	{}
	;
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3659 3660 3661
opt_no_write_to_binlog:
	/* empty */        { $$= 0; }
	| NO_WRITE_TO_BINLOG  { $$= 1; }
3662
	| LOCAL_SYM  { $$= 1; }
3663 3664
	;

3665 3666 3667 3668 3669
rename:
	RENAME table_or_tables
	{
	   Lex->sql_command=SQLCOM_RENAME_TABLE;
	}
3670 3671
	table_to_table_list
	{}
3672 3673 3674 3675
	| RENAME USER clear_privileges rename_list
          {
	    Lex->sql_command = SQLCOM_RENAME_USER;
          }
3676
	;
3677

3678 3679 3680 3681 3682 3683 3684 3685 3686 3687 3688 3689 3690
rename_list:
        user TO_SYM user
        {
          if (Lex->users_list.push_back($1) || Lex->users_list.push_back($3))
            YYABORT;
        }
        | rename_list ',' user TO_SYM user
          {
            if (Lex->users_list.push_back($3) || Lex->users_list.push_back($5))
              YYABORT;
          }
        ;

3691 3692
table_to_table_list:
	table_to_table
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	| table_to_table_list ',' table_to_table;
3694 3695 3696

table_to_table:
	table_ident TO_SYM table_ident
3697
	{
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	  LEX *lex=Lex;
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	  SELECT_LEX *sl= lex->current_select;
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	  if (!sl->add_table_to_list(lex->thd, $1,NULL,TL_OPTION_UPDATING,
				     TL_IGNORE) ||
	      !sl->add_table_to_list(lex->thd, $3,NULL,TL_OPTION_UPDATING,
				     TL_IGNORE))
3704
	    YYABORT;
3705
	};
3706

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keycache:
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        CACHE_SYM INDEX_SYM keycache_list IN_SYM key_cache_name
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        {
          LEX *lex=Lex;
3711
          lex->sql_command= SQLCOM_ASSIGN_TO_KEYCACHE;
3712
	  lex->ident= $5;
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        }
        ;

keycache_list:
        assign_to_keycache
        | keycache_list ',' assign_to_keycache;

assign_to_keycache:
3721
        table_ident cache_keys_spec
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        {
          LEX *lex=Lex;
          SELECT_LEX *sel= &lex->select_lex;
          if (!sel->add_table_to_list(lex->thd, $1, NULL, 0,
                                      TL_READ,
                                      sel->get_use_index(),
3728
                                      (List<String> *)0))
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            YYABORT;
        }
        ;

3733 3734 3735
key_cache_name:
	ident	   { $$= $1; }
	| DEFAULT  { $$ = default_key_cache_base; }
3736
	;
3737

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preload:
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	LOAD INDEX_SYM INTO CACHE_SYM
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	{
	  LEX *lex=Lex;
	  lex->sql_command=SQLCOM_PRELOAD_KEYS;
	}
	preload_list
	{}
	;

preload_list:
	preload_keys
	| preload_list ',' preload_keys;

preload_keys:
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	table_ident cache_keys_spec opt_ignore_leaves
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	{
	  LEX *lex=Lex;
	  SELECT_LEX *sel= &lex->select_lex;
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	  if (!sel->add_table_to_list(lex->thd, $1, NULL, $3,
                                      TL_READ,
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                                      sel->get_use_index(),
                                      (List<String> *)0))
            YYABORT;
	}
	;

3765
cache_keys_spec:
3766
        { Select->interval_list.empty(); }
3767 3768 3769 3770 3771 3772 3773
        cache_key_list_or_empty
        {
          LEX *lex=Lex;
          SELECT_LEX *sel= &lex->select_lex;
          sel->use_index= sel->interval_list;
        }
        ;
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cache_key_list_or_empty:
3776
	/* empty */	{ Lex->select_lex.use_index_ptr= 0; }
3777
	| opt_key_or_index '(' key_usage_list2 ')'
3778 3779 3780 3781
	  {
            SELECT_LEX *sel= &Lex->select_lex;
	    sel->use_index_ptr= &sel->use_index;
	  }
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	;

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opt_ignore_leaves:
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	/* empty */
	{ $$= 0; }
	| IGNORE_SYM LEAVES { $$= TL_OPTION_IGNORE_LEAVES; }
	;

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/*
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  Select : retrieve data from table
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*/


select:
3796 3797 3798 3799 3800
	select_init
	{
	  LEX *lex= Lex;
	  lex->sql_command= SQLCOM_SELECT;
	  lex->select_lex.resolve_mode= SELECT_LEX::SELECT_MODE;
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	}
	;
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3804
/* Need select_init2 for subselects. */
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select_init:
3806
	SELECT_SYM select_init2
3807
	|
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	'(' select_paren ')' union_opt;

select_paren:
	SELECT_SYM select_part2
3812
	  {
3813
	    LEX *lex= Lex;
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            SELECT_LEX * sel= lex->current_select;
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	    if (sel->set_braces(1))
3816
	    {
3817
	      yyerror(ER(ER_SYNTAX_ERROR));
3818 3819
	      YYABORT;
	    }
3820 3821
	  if (sel->linkage == UNION_TYPE &&
	      !sel->master_unit()->first_select()->braces)
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	  {
3823
	    yyerror(ER(ER_SYNTAX_ERROR));
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	    YYABORT;
	  }
3826
            /* select in braces, can't contain global parameters */
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	    if (sel->master_unit()->fake_select_lex)
              sel->master_unit()->global_parameters=
                 sel->master_unit()->fake_select_lex;
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          }
	| '(' select_paren ')';
3832

3833 3834
select_init2:
	select_part2
3835
        {
3836
	  LEX *lex= Lex;
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          SELECT_LEX * sel= lex->current_select;
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          if (lex->current_select->set_braces(0))
3839
	  {
3840
	    yyerror(ER(ER_SYNTAX_ERROR));
3841 3842
	    YYABORT;
	  }
3843 3844
	  if (sel->linkage == UNION_TYPE &&
	      sel->master_unit()->first_select()->braces)
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	  {
3846
	    yyerror(ER(ER_SYNTAX_ERROR));
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	    YYABORT;
	  }
3849
	}
3850
	union_clause
3851 3852
	;

3853
select_part2:
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	{
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	  LEX *lex= Lex;
	  SELECT_LEX *sel= lex->current_select;
	  lex->lock_option= TL_READ;
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	  if (sel->linkage != UNION_TYPE)
	    mysql_init_select(lex);
3860
	  lex->current_select->parsing_place= SELECT_LIST;
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	}
	select_options select_item_list
	{
3864
	  Select->parsing_place= NO_MATTER;
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	}
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	select_into select_lock_type;
3867

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select_into:
3869 3870
	opt_limit_clause {}
        | into
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	| select_from
3872 3873
	| into select_from
	| select_from into;
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select_from:
3876 3877
	  FROM join_table_list where_clause group_clause having_clause
	       opt_order_clause opt_limit_clause procedure_clause
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        | FROM DUAL_SYM opt_limit_clause
          /* oracle compatibility: oracle always requires FROM clause,
             and DUAL is system table without fields.
             Is "SELECT 1 FROM DUAL" any better than "SELECT 1" ?
          Hmmm :) */
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	;
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select_options:
	/* empty*/
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	| select_option_list;
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select_option_list:
	select_option_list select_option
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	| select_option;
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select_option:
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	STRAIGHT_JOIN { Select->options|= SELECT_STRAIGHT_JOIN; }
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	| HIGH_PRIORITY
	  {
	    if (check_simple_select())
	      YYABORT;
	    Lex->lock_option= TL_READ_HIGH_PRIORITY;
	  }
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	| DISTINCT	{ Select->options|= SELECT_DISTINCT; }
	| SQL_SMALL_RESULT { Select->options|= SELECT_SMALL_RESULT; }
	| SQL_BIG_RESULT { Select->options|= SELECT_BIG_RESULT; }
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	| SQL_BUFFER_RESULT
	  {
	    if (check_simple_select())
	      YYABORT;
	    Select->options|= OPTION_BUFFER_RESULT;
	  }
	| SQL_CALC_FOUND_ROWS
	  {
	    if (check_simple_select())
	      YYABORT;
	    Select->options|= OPTION_FOUND_ROWS;
	  }
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	| SQL_NO_CACHE_SYM { Lex->safe_to_cache_query=0; }
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	| SQL_CACHE_SYM
	  {
	    Lex->select_lex.options|= OPTION_TO_QUERY_CACHE;
	  }
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	| ALL		{}
	;
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select_lock_type:
	/* empty */
	| FOR_SYM UPDATE_SYM
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	  {
	    LEX *lex=Lex;
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	    lex->current_select->set_lock_for_tables(TL_WRITE);
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	    lex->safe_to_cache_query=0;
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	  }
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	| LOCK_SYM IN_SYM SHARE_SYM MODE_SYM
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	  {
	    LEX *lex=Lex;
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	    lex->current_select->
	      set_lock_for_tables(TL_READ_WITH_SHARED_LOCKS);
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	    lex->safe_to_cache_query=0;
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	  }
	;
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select_item_list:
	  select_item_list ',' select_item
	| select_item
	| '*'
	  {
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	    THD *thd= YYTHD;
	    if (add_item_to_list(thd, new Item_field(NULL, NULL, "*")))
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	      YYABORT;
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	    (thd->lex->current_select->with_wild)++;
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	  };
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select_item:
	  remember_name select_item2 remember_end select_alias
	  {
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	    if (add_item_to_list(YYTHD, $2))
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	      YYABORT;
	    if ($4.str)
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	      $2->set_name($4.str,$4.length,system_charset_info);
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	    else if (!$2->name) {
	      char *str = $1;
	      if (str[-1] == '`')
	        str--;
	      $2->set_name(str,(uint) ($3 - str), YYTHD->charset());
	    }
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	  };
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remember_name:
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	{ $$=(char*) Lex->tok_start; };
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remember_end:
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	{ $$=(char*) Lex->tok_end; };
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select_item2:
	table_wild	{ $$=$1; } /* table.* */
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	| expr		{ $$=$1; };
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select_alias:
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	/* empty */		{ $$=null_lex_str;}
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	| AS ident		{ $$=$2; }
	| AS TEXT_STRING_sys	{ $$=$2; }
	| ident			{ $$=$1; }
	| TEXT_STRING_sys	{ $$=$1; }
	;
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optional_braces:
	/* empty */ {}
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	| '(' ')' {};
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/* all possible expressions */
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expr:	
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	expr or bool_term	{ $$= new Item_cond_or($1,$3); }
	| expr XOR bool_term	{ $$= new Item_cond_xor($1,$3); }
	| bool_term ;

bool_term:
	bool_term and bool_factor { $$= new Item_cond_and($1,$3); }
	| bool_factor ;

bool_factor:
	NOT_SYM bool_factor	{ $$= negate_expression(YYTHD, $2); }
	| bool_test ;

bool_test:
	bool_pri IS TRUE_SYM	{ $$= is_truth_value($1,1,0); }
	| bool_pri IS not TRUE_SYM { $$= is_truth_value($1,0,0); }
	| bool_pri IS FALSE_SYM	{ $$= is_truth_value($1,0,1); }
	| bool_pri IS not FALSE_SYM { $$= is_truth_value($1,1,1); }
	| bool_pri IS UNKNOWN_SYM { $$= new Item_func_isnull($1); }
	| bool_pri IS not UNKNOWN_SYM { $$= new Item_func_isnotnull($1); }
	| bool_pri ;

bool_pri:
	bool_pri IS NULL_SYM	{ $$= new Item_func_isnull($1); }
	| bool_pri IS not NULL_SYM { $$= new Item_func_isnotnull($1); }
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	| bool_pri EQUAL_SYM predicate	{ $$= new Item_func_equal($1,$3); }
	| bool_pri comp_op predicate %prec EQ
	  { $$= (*$2)(0)->create($1,$3); }
	| bool_pri comp_op all_or_any in_subselect %prec EQ
	  { $$= all_any_subquery_creator($1, $2, $3, $4); }
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	| predicate ;

predicate:
	 bit_expr IN_SYM '(' expr_list ')'
	  { $4->push_front($1); $$= new Item_func_in(*$4); }
	| bit_expr not IN_SYM '(' expr_list ')'
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	  { $5->push_front($1); $$= negate_expression(YYTHD, new Item_func_in(*$5)); }
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        | bit_expr IN_SYM in_subselect
	  { $$= new Item_in_subselect($1, $3); }
	| bit_expr not IN_SYM in_subselect
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          { $$= negate_expression(YYTHD, new Item_in_subselect($1, $4)); }
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	| bit_expr BETWEEN_SYM bit_expr AND_SYM predicate
	  { $$= new Item_func_between($1,$3,$5); }
	| bit_expr not BETWEEN_SYM bit_expr AND_SYM predicate
	  { $$= negate_expression(YYTHD, new Item_func_between($1,$4,$6)); }
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	| bit_expr SOUNDS_SYM LIKE bit_expr
	  { $$= new Item_func_eq(new Item_func_soundex($1),
				 new Item_func_soundex($4)); }
	| bit_expr LIKE simple_expr opt_escape
          { $$= new Item_func_like($1,$3,$4); }
	| bit_expr not LIKE simple_expr opt_escape
          { $$= new Item_func_not(new Item_func_like($1,$4,$5)); }
	| bit_expr REGEXP bit_expr	{ $$= new Item_func_regex($1,$3); }
	| bit_expr not REGEXP bit_expr
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          { $$= negate_expression(YYTHD, new Item_func_regex($1,$4)); }
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	| bit_expr ;

bit_expr:
	bit_expr '|' bit_term	{ $$= new Item_func_bit_or($1,$3); }
	| bit_term ;

bit_term:
	bit_term '&' bit_factor	{ $$= new Item_func_bit_and($1,$3); }
	| bit_factor ;

bit_factor:
	bit_factor SHIFT_LEFT value_expr
	  { $$= new Item_func_shift_left($1,$3); }
	| bit_factor SHIFT_RIGHT value_expr 
	  { $$= new Item_func_shift_right($1,$3); }
	| value_expr ;

value_expr:
	value_expr '+' term	{ $$= new Item_func_plus($1,$3); }
	| value_expr '-' term	{ $$= new Item_func_minus($1,$3); }
	| value_expr '+' interval_expr interval
	  { $$= new Item_date_add_interval($1,$3,$4,0); }
	| value_expr '-' interval_expr interval
	  { $$= new Item_date_add_interval($1,$3,$4,1); }
	| term ;

term:
	term '*' factor		{ $$= new Item_func_mul($1,$3); }
	| term '/' factor	{ $$= new Item_func_div($1,$3); }
	| term '%' factor	{ $$= new Item_func_mod($1,$3); }
	| term DIV_SYM factor	{ $$= new Item_func_int_div($1,$3); }
	| term MOD_SYM factor	{ $$= new Item_func_mod($1,$3); }
	| factor ;

factor:
        factor '^' simple_expr	{ $$= new Item_func_bit_xor($1,$3); }
	| simple_expr ;

or:	OR_SYM | OR2_SYM;
and:	AND_SYM | AND_AND_SYM;
not:	NOT_SYM | NOT2_SYM;
not2:	'!' | NOT2_SYM;
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comp_op:  EQ		{ $$ = &comp_eq_creator; }
	| GE		{ $$ = &comp_ge_creator; }
	| GT_SYM	{ $$ = &comp_gt_creator; }
	| LE		{ $$ = &comp_le_creator; }
	| LT		{ $$ = &comp_lt_creator; }
	| NE		{ $$ = &comp_ne_creator; }
	;

all_or_any: ALL     { $$ = 1; }
        |   ANY_SYM { $$ = 0; }
        ;

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interval_expr:
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         INTERVAL_SYM expr { $$=$2; }
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        ;

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simple_expr:
	simple_ident
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 	| simple_expr COLLATE_SYM ident_or_text %prec NEG
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	  {
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	    $$= new Item_func_set_collation($1,
					    new Item_string($3.str,
							    $3.length,
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                                                            YYTHD->charset()));
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	  }
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	| literal
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	| param_marker
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	| '@' ident_or_text SET_VAR expr
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	  {
	    $$= new Item_func_set_user_var($2,$4);
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	    LEX *lex= Lex;
	    lex->uncacheable(UNCACHEABLE_RAND);
	    lex->variables_used= 1;
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	  }
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	| '@' ident_or_text
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	  {
	    $$= new Item_func_get_user_var($2);
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	    LEX *lex= Lex;
	    lex->uncacheable(UNCACHEABLE_RAND);
	    lex->variables_used= 1;
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	  }
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	| '@' '@' opt_var_ident_type ident_or_text opt_component
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	  {
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            if ($4.str && $5.str && check_reserved_words(&$4))
            {
              yyerror(ER(ER_SYNTAX_ERROR));
              YYABORT;
            }
4138
	    if (!($$= get_system_var(YYTHD, (enum_var_type) $3, $4, $5)))
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	      YYABORT;
4140
	    Lex->variables_used= 1;
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	  }
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	| sum_expr
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	| simple_expr OR_OR_SYM simple_expr
	  { $$= new Item_func_concat($1, $3); }
	| '+' simple_expr %prec NEG	{ $$= $2; }
	| '-' simple_expr %prec NEG	{ $$= new Item_func_neg($2); }
	| '~' simple_expr %prec NEG	{ $$= new Item_func_bit_neg($2); }
	| not2 simple_expr %prec NEG	{ $$= negate_expression(YYTHD, $2); }
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	| '(' expr ')'		{ $$= $2; }
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	| '(' expr ',' expr_list ')'
	  {
	    $4->push_front($2);
	    $$= new Item_row(*$4);
	  }
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	| ROW_SYM '(' expr ',' expr_list ')'
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	  {
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	    $5->push_front($3);
	    $$= new Item_row(*$5);
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	  }
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	| EXISTS exists_subselect { $$= $2; }
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	| singlerow_subselect   { $$= $1; }
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	| '{' ident expr '}'	{ $$= $3; }
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        | MATCH ident_list_arg AGAINST '(' bit_expr fulltext_options ')'
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          { $2->push_front($5);
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            Select->add_ftfunc_to_list((Item_func_match*)
                                        ($$=new Item_func_match(*$2,$6))); }
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	| ASCII_SYM '(' expr ')' { $$= new Item_func_ascii($3); }
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	| BINARY simple_expr %prec NEG
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	  {
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            $$= create_func_cast($2, ITEM_CAST_CHAR, -1, 0, &my_charset_bin);
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	  }
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	| CAST_SYM '(' expr AS cast_type ')'
4173
	  {
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            LEX *lex= Lex;
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	    $$= create_func_cast($3, $5,
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                                 lex->length ? atoi(lex->length) : -1,
                                 lex->dec ? atoi(lex->dec) : 0,
                                 lex->charset);
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	  }
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	| CASE_SYM opt_expr WHEN_SYM when_list opt_else END
4181
	  { $$= new Item_func_case(* $4, $2, $5 ); }
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	| CONVERT_SYM '(' expr ',' cast_type ')'
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	  {
	    $$= create_func_cast($3, $5,
				 Lex->length ? atoi(Lex->length) : -1,
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                                 Lex->dec ? atoi(Lex->dec) : 0,
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				 Lex->charset);
	  }
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	| CONVERT_SYM '(' expr USING charset_name ')'
	  { $$= new Item_func_conv_charset($3,$5); }
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	| DEFAULT '(' simple_ident ')'
	  { $$= new Item_default_value($3); }
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	| VALUES '(' simple_ident ')'
	  { $$= new Item_insert_value($3); }
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	| FUNC_ARG0 '(' ')'
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	  {
	    if (!$1.symbol->create_func)
	    {
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              my_error(ER_FEATURE_DISABLED, MYF(0),
                       $1.symbol->group->name,
                       $1.symbol->group->needed_define);
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	      YYABORT;
	    }
	    $$= ((Item*(*)(void))($1.symbol->create_func))();
	  }
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	| FUNC_ARG1 '(' expr ')'
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	  {
	    if (!$1.symbol->create_func)
	    {
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              my_error(ER_FEATURE_DISABLED, MYF(0),
                       $1.symbol->group->name,
                       $1.symbol->group->needed_define);
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	      YYABORT;
	    }
	    $$= ((Item*(*)(Item*))($1.symbol->create_func))($3);
	  }
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	| FUNC_ARG2 '(' expr ',' expr ')'
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	  {
	    if (!$1.symbol->create_func)
	    {
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	      my_error(ER_FEATURE_DISABLED, MYF(0),
                       $1.symbol->group->name,
                       $1.symbol->group->needed_define);
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	      YYABORT;
	    }
	    $$= ((Item*(*)(Item*,Item*))($1.symbol->create_func))($3,$5);
	  }
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	| FUNC_ARG3 '(' expr ',' expr ',' expr ')'
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	  {
	    if (!$1.symbol->create_func)
	    {
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              my_error(ER_FEATURE_DISABLED, MYF(0),
                       $1.symbol->group->name,
                       $1.symbol->group->needed_define);
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	      YYABORT;
	    }
	    $$= ((Item*(*)(Item*,Item*,Item*))($1.symbol->create_func))($3,$5,$7);
	  }
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	| ADDDATE_SYM '(' expr ',' expr ')'
	  { $$= new Item_date_add_interval($3, $5, INTERVAL_DAY, 0);}
	| ADDDATE_SYM '(' expr ',' INTERVAL_SYM expr interval ')'
	  { $$= new Item_date_add_interval($3, $6, $7, 0); }
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	| REPEAT_SYM '(' expr ',' expr ')'
	  { $$= new Item_func_repeat($3,$5); }
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	| ATAN	'(' expr ')'
	  { $$= new Item_func_atan($3); }
	| ATAN	'(' expr ',' expr ')'
	  { $$= new Item_func_atan($3,$5); }
	| CHAR_SYM '(' expr_list ')'
	  { $$= new Item_func_char(*$3); }
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	| CHARSET '(' expr ')'
	  { $$= new Item_func_charset($3); }
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	| COALESCE '(' expr_list ')'
	  { $$= new Item_func_coalesce(* $3); }
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	| COLLATION_SYM '(' expr ')'
	  { $$= new Item_func_collation($3); }
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	| CONCAT '(' expr_list ')'
	  { $$= new Item_func_concat(* $3); }
	| CONCAT_WS '(' expr ',' expr_list ')'
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	  { $5->push_front($3); $$= new Item_func_concat_ws(*$5); }
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	| CONVERT_TZ_SYM '(' expr ',' expr ',' expr ')'
	  {
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            if (Lex->add_time_zone_tables_to_query_tables(YYTHD))
              YYABORT;
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	    $$= new Item_func_convert_tz($3, $5, $7);
	  }
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	| CURDATE optional_braces
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	  { $$= new Item_func_curdate_local(); Lex->safe_to_cache_query=0; }
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	| CURTIME optional_braces
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	  { $$= new Item_func_curtime_local(); Lex->safe_to_cache_query=0; }
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	| CURTIME '(' expr ')'
4272
	  {
4273
	    $$= new Item_func_curtime_local($3);
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	    Lex->safe_to_cache_query=0;
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	  }
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	| CURRENT_USER optional_braces
4277
          { $$= create_func_current_user(); }
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	| DATE_ADD_INTERVAL '(' expr ',' interval_expr interval ')'
	  { $$= new Item_date_add_interval($3,$5,$6,0); }
	| DATE_SUB_INTERVAL '(' expr ',' interval_expr interval ')'
	  { $$= new Item_date_add_interval($3,$5,$6,1); }
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	| DATABASE '(' ')'
4283
	  {
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	    $$= new Item_func_database();
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            Lex->safe_to_cache_query=0;
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	  }
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	| DATE_SYM '(' expr ')'
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	  { $$= new Item_date_typecast($3); }
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	| DAY_SYM '(' expr ')'
	  { $$= new Item_func_dayofmonth($3); }
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	| ELT_FUNC '(' expr ',' expr_list ')'
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	  { $5->push_front($3); $$= new Item_func_elt(*$5); }
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	| MAKE_SET_SYM '(' expr ',' expr_list ')'
	  { $$= new Item_func_make_set($3, *$5); }
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	| ENCRYPT '(' expr ')'
	  {
	    $$= new Item_func_encrypt($3);
4298
	    Lex->uncacheable(UNCACHEABLE_RAND);
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	  }
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	| ENCRYPT '(' expr ',' expr ')'   { $$= new Item_func_encrypt($3,$5); }
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	| DECODE_SYM '(' expr ',' TEXT_STRING_literal ')'
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	  { $$= new Item_func_decode($3,$5.str); }
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	| ENCODE_SYM '(' expr ',' TEXT_STRING_literal ')'
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	 { $$= new Item_func_encode($3,$5.str); }
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	| DES_DECRYPT_SYM '(' expr ')'
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        { $$= new Item_func_des_decrypt($3); }
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	| DES_DECRYPT_SYM '(' expr ',' expr ')'
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        { $$= new Item_func_des_decrypt($3,$5); }
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	| DES_ENCRYPT_SYM '(' expr ')'
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        { $$= new Item_func_des_encrypt($3); }
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	| DES_ENCRYPT_SYM '(' expr ',' expr ')'
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        { $$= new Item_func_des_encrypt($3,$5); }
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	| EXPORT_SET '(' expr ',' expr ',' expr ')'
		{ $$= new Item_func_export_set($3, $5, $7); }
	| EXPORT_SET '(' expr ',' expr ',' expr ',' expr ')'
		{ $$= new Item_func_export_set($3, $5, $7, $9); }
	| EXPORT_SET '(' expr ',' expr ',' expr ',' expr ',' expr ')'
		{ $$= new Item_func_export_set($3, $5, $7, $9, $11); }
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	| FALSE_SYM
	  { $$= new Item_int((char*) "FALSE",0,1); }
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	| FORMAT_SYM '(' expr ',' NUM ')'
	  { $$= new Item_func_format($3,atoi($5.str)); }
	| FROM_UNIXTIME '(' expr ')'
	  { $$= new Item_func_from_unixtime($3); }
	| FROM_UNIXTIME '(' expr ',' expr ')'
	  {
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	    $$= new Item_func_date_format (new Item_func_from_unixtime($3),$5,0);
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	  }
	| FIELD_FUNC '(' expr ',' expr_list ')'
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	  { $5->push_front($3); $$= new Item_func_field(*$5); }
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	| geometry_function
	  {
#ifdef HAVE_SPATIAL
	    $$= $1;
#else
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	    my_error(ER_FEATURE_DISABLED, MYF(0),
                     sym_group_geom.name, sym_group_geom.needed_define);
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	    YYABORT;
#endif
	  }
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	| GET_FORMAT '(' date_time_type  ',' expr ')'
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	  { $$= new Item_func_get_format($3, $5); }
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	| HOUR_SYM '(' expr ')'
	  { $$= new Item_func_hour($3); }
	| IF '(' expr ',' expr ',' expr ')'
	  { $$= new Item_func_if($3,$5,$7); }
	| INSERT '(' expr ',' expr ',' expr ',' expr ')'
	  { $$= new Item_func_insert($3,$5,$7,$9); }
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	| interval_expr interval '+' expr
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	  /* we cannot put interval before - */
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	  { $$= new Item_date_add_interval($4,$1,$2,0); }
	| interval_expr
	  {
            if ($1->type() != Item::ROW_ITEM)
            {
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              yyerror(ER(ER_SYNTAX_ERROR));
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              YYABORT;
            }
            $$= new Item_func_interval((Item_row *)$1);
          }
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	| LAST_INSERT_ID '(' ')'
	  {
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	    $$= new Item_func_last_insert_id();
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	    Lex->safe_to_cache_query= 0;
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	  }
	| LAST_INSERT_ID '(' expr ')'
	  {
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	    $$= new Item_func_last_insert_id($3);
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	    Lex->safe_to_cache_query= 0;
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	  }
	| LEFT '(' expr ',' expr ')'
	  { $$= new Item_func_left($3,$5); }
	| LOCATE '(' expr ',' expr ')'
	  { $$= new Item_func_locate($5,$3); }
	| LOCATE '(' expr ',' expr ',' expr ')'
	  { $$= new Item_func_locate($5,$3,$7); }
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	| GREATEST_SYM '(' expr ',' expr_list ')'
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	  { $5->push_front($3); $$= new Item_func_max(*$5); }
	| LEAST_SYM '(' expr ',' expr_list ')'
	  { $5->push_front($3); $$= new Item_func_min(*$5); }
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	| LOG_SYM '(' expr ')'
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	  { $$= new Item_func_log($3); }
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	| LOG_SYM '(' expr ',' expr ')'
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	  { $$= new Item_func_log($3, $5); }
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	| MASTER_POS_WAIT '(' expr ',' expr ')'
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	  {
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	    $$= new Item_master_pos_wait($3, $5);
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	    Lex->safe_to_cache_query=0;
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		  }
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	| MASTER_POS_WAIT '(' expr ',' expr ',' expr ')'
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	  {
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	    $$= new Item_master_pos_wait($3, $5, $7);
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	    Lex->safe_to_cache_query=0;
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	  }
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	| MICROSECOND_SYM '(' expr ')'
	  { $$= new Item_func_microsecond($3); }
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	| MINUTE_SYM '(' expr ')'
	  { $$= new Item_func_minute($3); }
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	| MOD_SYM '(' expr ',' expr ')'
	  { $$ = new Item_func_mod( $3, $5); }
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	| MONTH_SYM '(' expr ')'
	  { $$= new Item_func_month($3); }
	| NOW_SYM optional_braces
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	  { $$= new Item_func_now_local(); Lex->safe_to_cache_query=0;}
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	| NOW_SYM '(' expr ')'
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	  { $$= new Item_func_now_local($3); Lex->safe_to_cache_query=0;}
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	| PASSWORD '(' expr ')'
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	  {
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	    $$= YYTHD->variables.old_passwords ?
              (Item *) new Item_func_old_password($3) :
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	      (Item *) new Item_func_password($3);
	  }
	| OLD_PASSWORD '(' expr ')'
	  { $$=  new Item_func_old_password($3); }
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	| POSITION_SYM '(' bit_expr IN_SYM expr ')'
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	  { $$ = new Item_func_locate($5,$3); }
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	| QUARTER_SYM '(' expr ')'
	  { $$ = new Item_func_quarter($3); }
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	| RAND '(' expr ')'
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	  { $$= new Item_func_rand($3); Lex->uncacheable(UNCACHEABLE_RAND);}
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	| RAND '(' ')'
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	  { $$= new Item_func_rand(); Lex->uncacheable(UNCACHEABLE_RAND);}
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	| REPLACE '(' expr ',' expr ',' expr ')'
	  { $$= new Item_func_replace($3,$5,$7); }
	| RIGHT '(' expr ',' expr ')'
	  { $$= new Item_func_right($3,$5); }
	| ROUND '(' expr ')'
	  { $$= new Item_func_round($3, new Item_int((char*)"0",0,1),0); }
	| ROUND '(' expr ',' expr ')' { $$= new Item_func_round($3,$5,0); }
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	| ROW_COUNT_SYM '(' ')'
	  {
	    $$= new Item_func_row_count();
	    Lex->safe_to_cache_query= 0;
	  }
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	| SUBDATE_SYM '(' expr ',' expr ')'
	  { $$= new Item_date_add_interval($3, $5, INTERVAL_DAY, 1);}
	| SUBDATE_SYM '(' expr ',' INTERVAL_SYM expr interval ')'
	  { $$= new Item_date_add_interval($3, $6, $7, 1); }
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	| SECOND_SYM '(' expr ')'
	  { $$= new Item_func_second($3); }
	| SUBSTRING '(' expr ',' expr ',' expr ')'
	  { $$= new Item_func_substr($3,$5,$7); }
	| SUBSTRING '(' expr ',' expr ')'
	  { $$= new Item_func_substr($3,$5); }
	| SUBSTRING '(' expr FROM expr FOR_SYM expr ')'
	  { $$= new Item_func_substr($3,$5,$7); }
	| SUBSTRING '(' expr FROM expr ')'
	  { $$= new Item_func_substr($3,$5); }
	| SUBSTRING_INDEX '(' expr ',' expr ',' expr ')'
	  { $$= new Item_func_substr_index($3,$5,$7); }
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	| TIME_SYM '(' expr ')'
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	  { $$= new Item_time_typecast($3); }
	| TIMESTAMP '(' expr ')'
	  { $$= new Item_datetime_typecast($3); }
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	| TIMESTAMP '(' expr ',' expr ')'
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	  { $$= new Item_func_add_time($3, $5, 1, 0); }
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	| TIMESTAMP_ADD '(' interval_time_st ',' expr ',' expr ')'
	  { $$= new Item_date_add_interval($7,$5,$3,0); }
	| TIMESTAMP_DIFF '(' interval_time_st ',' expr ',' expr ')'
	  { $$= new Item_func_timestamp_diff($5,$7,$3); }
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	| TRIM '(' expr ')'
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	  { $$= new Item_func_trim($3); }
	| TRIM '(' LEADING expr FROM expr ')'
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	  { $$= new Item_func_ltrim($6,$4); }
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	| TRIM '(' TRAILING expr FROM expr ')'
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	  { $$= new Item_func_rtrim($6,$4); }
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	| TRIM '(' BOTH expr FROM expr ')'
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	  { $$= new Item_func_trim($6,$4); }
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	| TRIM '(' LEADING FROM expr ')'
	 { $$= new Item_func_ltrim($5); }
	| TRIM '(' TRAILING FROM expr ')'
	  { $$= new Item_func_rtrim($5); }
	| TRIM '(' BOTH FROM expr ')'
	  { $$= new Item_func_trim($5); }
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	| TRIM '(' expr FROM expr ')'
	  { $$= new Item_func_trim($5,$3); }
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	| TRUNCATE_SYM '(' expr ',' expr ')'
	  { $$= new Item_func_round($3,$5,1); }
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	| TRUE_SYM
	  { $$= new Item_int((char*) "TRUE",1,1); }
	| ident '.' ident '(' udf_expr_list ')'
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	  {
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	    sp_name *name= new sp_name($1, $3);

	    name->init_qname(YYTHD);
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	    sp_add_to_hash(&Lex->spfuns, name);
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	    if ($5)
	      $$= new Item_func_sp(name, *$5);
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	    else
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	      $$= new Item_func_sp(name);
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	  }
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	| IDENT_sys '(' udf_expr_list ')'
          {
#ifdef HAVE_DLOPEN
            udf_func *udf;

            if (using_udf_functions && (udf=find_udf($1.str, $1.length)))
            {
              switch (udf->returns) {
              case STRING_RESULT:
                if (udf->type == UDFTYPE_FUNCTION)
                {
                  if ($3 != NULL)
                    $$ = new Item_func_udf_str(udf, *$3);
                  else
                    $$ = new Item_func_udf_str(udf);
                }
                else
                {
                  if ($3 != NULL)
                    $$ = new Item_sum_udf_str(udf, *$3);
                  else
                    $$ = new Item_sum_udf_str(udf);
                }
                break;
              case REAL_RESULT:
                if (udf->type == UDFTYPE_FUNCTION)
                {
                  if ($3 != NULL)
                    $$ = new Item_func_udf_float(udf, *$3);
                  else
                    $$ = new Item_func_udf_float(udf);
                }
                else
                {
                  if ($3 != NULL)
                    $$ = new Item_sum_udf_float(udf, *$3);
                  else
                    $$ = new Item_sum_udf_float(udf);
                }
                break;
              case INT_RESULT:
                if (udf->type == UDFTYPE_FUNCTION)
                {
                  if ($3 != NULL)
                    $$ = new Item_func_udf_int(udf, *$3);
                  else
                    $$ = new Item_func_udf_int(udf);
                }
                else
                {
                  if ($3 != NULL)
                    $$ = new Item_sum_udf_int(udf, *$3);
                  else
                    $$ = new Item_sum_udf_int(udf);
                }
                break;
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              case DECIMAL_RESULT:
                if (udf->type == UDFTYPE_FUNCTION)
                {
                  if ($3 != NULL)
                    $$ = new Item_func_udf_decimal(udf, *$3);
                  else
                    $$ = new Item_func_udf_decimal(udf);
                }
                else
                {
                  if ($3 != NULL)
                    $$ = new Item_sum_udf_decimal(udf, *$3);
                  else
                    $$ = new Item_sum_udf_decimal(udf);
                }
                break;
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              default:
                YYABORT;
              }
            }
            else
#endif /* HAVE_DLOPEN */
            {
              sp_name *name= sp_name_current_db_new(YYTHD, $1);

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              sp_add_to_hash(&Lex->spfuns, name);
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              if ($3)
                $$= new Item_func_sp(name, *$3);
              else
                $$= new Item_func_sp(name);
	    }
          }
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	| UNIQUE_USERS '(' text_literal ',' NUM ',' NUM ',' expr_list ')'
4581
	  {
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            $$= new Item_func_unique_users($3,atoi($5.str),atoi($7.str), * $9);
	  }
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	| UNIX_TIMESTAMP '(' ')'
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	  {
	    $$= new Item_func_unix_timestamp();
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	    Lex->safe_to_cache_query=0;
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	  }
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	| UNIX_TIMESTAMP '(' expr ')'
	  { $$= new Item_func_unix_timestamp($3); }
	| USER '(' ')'
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	  { $$= new Item_func_user(); Lex->safe_to_cache_query=0; }
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	| UTC_DATE_SYM optional_braces
	  { $$= new Item_func_curdate_utc(); Lex->safe_to_cache_query=0;}
	| UTC_TIME_SYM optional_braces
	  { $$= new Item_func_curtime_utc(); Lex->safe_to_cache_query=0;}
	| UTC_TIMESTAMP_SYM optional_braces
	  { $$= new Item_func_now_utc(); Lex->safe_to_cache_query=0;}
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	| WEEK_SYM '(' expr ')'
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	  {
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            $$= new Item_func_week($3,new Item_int((char*) "0",
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				   YYTHD->variables.default_week_format,1));
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          }
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	| WEEK_SYM '(' expr ',' expr ')'
	  { $$= new Item_func_week($3,$5); }
	| YEAR_SYM '(' expr ')'
	  { $$= new Item_func_year($3); }
	| YEARWEEK '(' expr ')'
	  { $$= new Item_func_yearweek($3,new Item_int((char*) "0",0,1)); }
	| YEARWEEK '(' expr ',' expr ')'
	  { $$= new Item_func_yearweek($3, $5); }
	| BENCHMARK_SYM '(' ULONG_NUM ',' expr ')'
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	  {
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	    $$=new Item_func_benchmark($3,$5);
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	    Lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
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	  }
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	| EXTRACT_SYM '(' interval FROM expr ')'
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	{ $$=new Item_extract( $3, $5); };
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geometry_function:
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	  CONTAINS_SYM '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_spatial_rel($3, $5, Item_func::SP_CONTAINS_FUNC)); }
	| GEOMFROMTEXT '(' expr ')'
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	  { $$= GEOM_NEW(Item_func_geometry_from_text($3)); }
	| GEOMFROMTEXT '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3, $5)); }
	| GEOMFROMWKB '(' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_wkb($3)); }
	| GEOMFROMWKB '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_wkb($3, $5)); }
	| GEOMETRYCOLLECTION '(' expr_list ')'
	  { $$= GEOM_NEW(Item_func_spatial_collection(* $3,
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                           Geometry::wkb_geometrycollection,
                           Geometry::wkb_point)); }
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	| LINESTRING '(' expr_list ')'
	  { $$= GEOM_NEW(Item_func_spatial_collection(* $3,
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                  Geometry::wkb_linestring, Geometry::wkb_point)); }
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 	| MULTILINESTRING '(' expr_list ')'
	  { $$= GEOM_NEW( Item_func_spatial_collection(* $3,
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                   Geometry::wkb_multilinestring, Geometry::wkb_linestring)); }
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 	| MLINEFROMTEXT '(' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3)); }
	| MLINEFROMTEXT '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3, $5)); }
	| MPOINTFROMTEXT '(' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3)); }
	| MPOINTFROMTEXT '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3, $5)); }
	| MPOLYFROMTEXT '(' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3)); }
	| MPOLYFROMTEXT '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3, $5)); }
	| MULTIPOINT '(' expr_list ')'
	  { $$= GEOM_NEW(Item_func_spatial_collection(* $3,
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                  Geometry::wkb_multipoint, Geometry::wkb_point)); }
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 	| MULTIPOLYGON '(' expr_list ')'
	  { $$= GEOM_NEW(Item_func_spatial_collection(* $3,
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                  Geometry::wkb_multipolygon, Geometry::wkb_polygon)); }
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	| POINT_SYM '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_point($3,$5)); }
 	| POINTFROMTEXT '(' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3)); }
	| POINTFROMTEXT '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3, $5)); }
	| POLYFROMTEXT '(' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3)); }
	| POLYFROMTEXT '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3, $5)); }
	| POLYGON '(' expr_list ')'
	  { $$= GEOM_NEW(Item_func_spatial_collection(* $3,
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	          Geometry::wkb_polygon, Geometry::wkb_linestring)); }
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 	| GEOMCOLLFROMTEXT '(' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3)); }
	| GEOMCOLLFROMTEXT '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3, $5)); }
 	| LINEFROMTEXT '(' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3)); }
	| LINEFROMTEXT '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3, $5)); }
	;

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fulltext_options:
        /* nothing */                   { $$= FT_NL;  }
        | WITH QUERY_SYM EXPANSION_SYM  { $$= FT_NL | FT_EXPAND; }
        | IN_SYM BOOLEAN_SYM MODE_SYM   { $$= FT_BOOL; }
        ;

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udf_expr_list:
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	/* empty */	 { $$= NULL; }
	| udf_expr_list2 { $$= $1;}
	;

udf_expr_list2:
	{ Select->expr_list.push_front(new List<Item>); }
	udf_expr_list3
	{ $$= Select->expr_list.pop(); }
	;

udf_expr_list3:
	udf_expr 
	  {
	    Select->expr_list.head()->push_back($1);
	  }
	| udf_expr_list3 ',' udf_expr 
	  {
	    Select->expr_list.head()->push_back($3);
	  }
	;

udf_expr:
	remember_name expr remember_end select_alias
	{
	  if ($4.str)
	    $2->set_name($4.str,$4.length,system_charset_info);
	  else
	    $2->set_name($1,(uint) ($3 - $1), YYTHD->charset());
	  $$= $2;
	}
	;
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sum_expr:
	AVG_SYM '(' in_sum_expr ')'
	  { $$=new Item_sum_avg($3); }
	| BIT_AND  '(' in_sum_expr ')'
	  { $$=new Item_sum_and($3); }
	| BIT_OR  '(' in_sum_expr ')'
	  { $$=new Item_sum_or($3); }
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	| BIT_XOR  '(' in_sum_expr ')'
	  { $$=new Item_sum_xor($3); }
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	| COUNT_SYM '(' opt_all '*' ')'
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	  { $$=new Item_sum_count(new Item_int((int32) 0L,1)); }
	| COUNT_SYM '(' in_sum_expr ')'
	  { $$=new Item_sum_count($3); }
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	| COUNT_SYM '(' DISTINCT
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	  { Select->in_sum_expr++; }
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	   expr_list
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	  { Select->in_sum_expr--; }
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	  ')'
	  { $$=new Item_sum_count_distinct(* $5); }
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	| GROUP_UNIQUE_USERS '(' text_literal ',' NUM ',' NUM ',' in_sum_expr ')'
	  { $$= new Item_sum_unique_users($3,atoi($5.str),atoi($7.str),$9); }
	| MIN_SYM '(' in_sum_expr ')'
	  { $$=new Item_sum_min($3); }
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/*
   According to ANSI SQL, DISTINCT is allowed and has
   no sence inside MIN and MAX grouping functions; so MIN|MAX(DISTINCT ...)
   is processed like an ordinary MIN | MAX()
 */
	| MIN_SYM '(' DISTINCT in_sum_expr ')'
	  { $$=new Item_sum_min($4); }
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	| MAX_SYM '(' in_sum_expr ')'
	  { $$=new Item_sum_max($3); }
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	| MAX_SYM '(' DISTINCT in_sum_expr ')'
	  { $$=new Item_sum_max($4); }
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	| STD_SYM '(' in_sum_expr ')'
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	  { $$=new Item_sum_std($3, 0); }
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	| VARIANCE_SYM '(' in_sum_expr ')'
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	  { $$=new Item_sum_variance($3, 0); }
	| STDDEV_SAMP_SYM '(' in_sum_expr ')'
	  { $$=new Item_sum_std($3, 1); }
	| VAR_SAMP_SYM '(' in_sum_expr ')'
	  { $$=new Item_sum_variance($3, 1); }
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	| SUM_SYM '(' in_sum_expr ')'
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	  { $$=new Item_sum_sum($3); }
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	| SUM_SYM '(' DISTINCT in_sum_expr ')'
	  { $$=new Item_sum_sum_distinct($4); }
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	| GROUP_CONCAT_SYM '(' opt_distinct
	  { Select->in_sum_expr++; }
	  expr_list opt_gorder_clause
	  opt_gconcat_separator
	 ')'
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	  {
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	    Select->in_sum_expr--;
	    $$=new Item_func_group_concat($3,$5,Select->gorder_list,$7);
	    $5->empty();
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	  };

opt_distinct:
    /* empty */ { $$ = 0; }
    |DISTINCT   { $$ = 1; };

opt_gconcat_separator:
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    /* empty */        { $$ = new (YYTHD->mem_root) String(",",1,default_charset_info); }
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    |SEPARATOR_SYM text_string  { $$ = $2; };
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opt_gorder_clause:
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	  /* empty */
	  {
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            Select->gorder_list = NULL;
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	  }
	| order_clause
          {
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            SELECT_LEX *select= Select;
            select->gorder_list=
	      (SQL_LIST*) sql_memdup((char*) &select->order_list,
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				     sizeof(st_sql_list));
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	    select->order_list.empty();
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	  };
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in_sum_expr:
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	opt_all
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	{
	  LEX *lex= Lex;
	  if (lex->current_select->inc_in_sum_expr())
	  {
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	    yyerror(ER(ER_SYNTAX_ERROR));
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	    YYABORT;
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	  }
	}
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	expr
	{
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	  Select->in_sum_expr--;
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	  $$= $3;
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	};
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cast_type:
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        BINARY opt_len		{ $$=ITEM_CAST_CHAR; Lex->charset= &my_charset_bin; Lex->dec= 0; }
        | CHAR_SYM opt_len opt_binary	{ $$=ITEM_CAST_CHAR; Lex->dec= 0; }
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	| NCHAR_SYM opt_len	{ $$=ITEM_CAST_CHAR; Lex->charset= national_charset_info; Lex->dec=0; }
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        | SIGNED_SYM		{ $$=ITEM_CAST_SIGNED_INT; Lex->charset= NULL; Lex->dec=Lex->length= (char*)0; }
        | SIGNED_SYM INT_SYM	{ $$=ITEM_CAST_SIGNED_INT; Lex->charset= NULL; Lex->dec=Lex->length= (char*)0; }
        | UNSIGNED		{ $$=ITEM_CAST_UNSIGNED_INT; Lex->charset= NULL; Lex->dec=Lex->length= (char*)0; }
        | UNSIGNED INT_SYM	{ $$=ITEM_CAST_UNSIGNED_INT; Lex->charset= NULL; Lex->dec=Lex->length= (char*)0; }
        | DATE_SYM		{ $$=ITEM_CAST_DATE; Lex->charset= NULL; Lex->dec=Lex->length= (char*)0; }
        | TIME_SYM		{ $$=ITEM_CAST_TIME; Lex->charset= NULL; Lex->dec=Lex->length= (char*)0; }
        | DATETIME		{ $$=ITEM_CAST_DATETIME; Lex->charset= NULL; Lex->dec=Lex->length= (char*)0; }
        | DECIMAL_SYM float_options { $$=ITEM_CAST_DECIMAL; Lex->charset= NULL; }
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	;

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expr_list:
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	{ Select->expr_list.push_front(new List<Item>); }
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	expr_list2
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	{ $$= Select->expr_list.pop(); };
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expr_list2:
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	expr { Select->expr_list.head()->push_back($1); }
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	| expr_list2 ',' expr { Select->expr_list.head()->push_back($3); };
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ident_list_arg:
          ident_list          { $$= $1; }
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        | '(' ident_list ')'  { $$= $2; };
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ident_list:
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        { Select->expr_list.push_front(new List<Item>); }
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        ident_list2
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        { $$= Select->expr_list.pop(); };
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ident_list2:
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        simple_ident { Select->expr_list.head()->push_back($1); }
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        | ident_list2 ',' simple_ident { Select->expr_list.head()->push_back($3); };
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opt_expr:
	/* empty */      { $$= NULL; }
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	| expr           { $$= $1; };
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opt_else:
	/* empty */    { $$= NULL; }
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	| ELSE expr    { $$= $2; };
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when_list:
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        { Select->when_list.push_front(new List<Item>); }
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	when_list2
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	{ $$= Select->when_list.pop(); };
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when_list2:
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	expr THEN_SYM expr
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	  {
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	    SELECT_LEX *sel=Select;
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	    sel->when_list.head()->push_back($1);
	    sel->when_list.head()->push_back($3);
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	}
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	| when_list2 WHEN_SYM expr THEN_SYM expr
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	  {
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	    SELECT_LEX *sel=Select;
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	    sel->when_list.head()->push_back($3);
	    sel->when_list.head()->push_back($5);
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	  };
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table_ref:
        table_factor            { $$=$1; }
        | join_table            { $$=$1; }
4884
          {
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	    LEX *lex= Lex;
            if (!($$= lex->current_select->nest_last_join(lex->thd)))
              YYABORT;
4888
          }
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        ;

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join_table_list:
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        table_ref { $$=$1; }
        | join_table_list ',' table_ref { $$=$3; }
        ;

join_table:
        table_ref normal_join table_ref { $$=$3; }
	| table_ref STRAIGHT_JOIN table_factor
	  { $3->straight=1; $$=$3 ; }
	| table_ref normal_join table_ref ON expr
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	  { add_join_on($3,$5); $$=$3; }
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	| table_ref normal_join table_ref
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	  USING
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	  {
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	    SELECT_LEX *sel= Select;
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            sel->save_names_for_using_list($1, $3);
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	  }
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	  '(' using_list ')'
	  { add_join_on($3,$7); $$=$3; }

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	| table_ref LEFT opt_outer JOIN_SYM table_ref ON expr
4912
	  { add_join_on($5,$7); $5->outer_join|=JOIN_TYPE_LEFT; $$=$5; }
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	| table_ref LEFT opt_outer JOIN_SYM table_factor
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	  {
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	    SELECT_LEX *sel= Select;
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            sel->save_names_for_using_list($1, $5);
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	  }
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	  USING '(' using_list ')'
4919
	  { add_join_on($5,$9); $5->outer_join|=JOIN_TYPE_LEFT; $$=$5; }
4920
	| table_ref NATURAL LEFT opt_outer JOIN_SYM table_factor
4921
	  {
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	    add_join_natural($1,$6);
	    $6->outer_join|=JOIN_TYPE_LEFT;
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	    $$=$6;
	  }
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	| table_ref RIGHT opt_outer JOIN_SYM table_ref ON expr
          { 
	    LEX *lex= Lex;
            if (!($$= lex->current_select->convert_right_join()))
              YYABORT;
            add_join_on($$, $7);
          }
	| table_ref RIGHT opt_outer JOIN_SYM table_factor
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	  {
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	    SELECT_LEX *sel= Select;
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            sel->save_names_for_using_list($1, $5);
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	  }
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	  USING '(' using_list ')'
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          { 
	    LEX *lex= Lex;
            if (!($$= lex->current_select->convert_right_join()))
              YYABORT;
            add_join_on($$, $9);
          }
	| table_ref NATURAL RIGHT opt_outer JOIN_SYM table_factor
4946
	  {
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	    add_join_natural($6,$1);
	    LEX *lex= Lex;
            if (!($$= lex->current_select->convert_right_join()))
              YYABORT;
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	  }
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	| table_ref NATURAL JOIN_SYM table_factor
	  { add_join_natural($1,$4); $$=$4; };
        
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normal_join:
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	JOIN_SYM		{}
	| INNER_SYM JOIN_SYM	{}
	| CROSS JOIN_SYM	{}
	;
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table_factor:
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	{
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	  SELECT_LEX *sel= Select;
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	  sel->use_index_ptr=sel->ignore_index_ptr=0;
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	  sel->table_join_options= 0;
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	}
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        table_ident opt_table_alias opt_key_definition
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	{
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	  LEX *lex= Lex;
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	  SELECT_LEX *sel= lex->current_select;
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	  if (!($$= sel->add_table_to_list(lex->thd, $2, $3,
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					   sel->get_table_join_options(),
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					   lex->lock_option,
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					   sel->get_use_index(),
					   sel->get_ignore_index())))
4977
	    YYABORT;
4978
          sel->add_joined_table($$);
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	}
4980
        | '('
4981
          {
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            LEX *lex= Lex;
            if (lex->current_select->init_nested_join(lex->thd))
              YYABORT;
4985
          }
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          join_table_list ')'
          {
            LEX *lex= Lex;
            if (!($$= lex->current_select->end_nested_join(lex->thd)))
              YYABORT;
4991
          }
4992
	| '{' ident table_ref LEFT OUTER JOIN_SYM table_ref ON expr '}'
4993
	  { add_join_on($7,$9); $7->outer_join|=JOIN_TYPE_LEFT; $$=$7; }
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	| '(' select_derived union_opt ')' opt_table_alias
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	{
	  LEX *lex=Lex;
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	  SELECT_LEX_UNIT *unit= lex->current_select->master_unit();
	  lex->current_select= unit->outer_select();
	  if (!($$= lex->current_select->
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                add_table_to_list(lex->thd, new Table_ident(unit), $5, 0,
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				  TL_READ,(List<String> *)0,
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	                          (List<String> *)0)))

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	    YYABORT;
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          lex->current_select->add_joined_table($$);           
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	};
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select_derived:
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	SELECT_SYM select_derived2
	| '(' select_derived ')'
	  {
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            SELECT_LEX *sel= Select;
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	    if (sel->set_braces(1))
	    {
	      yyerror(ER(ER_SYNTAX_ERROR));
	      YYABORT;
	    }
            /* select in braces, can't contain global parameters */
	    if (sel->master_unit()->fake_select_lex)
              sel->master_unit()->global_parameters=
                 sel->master_unit()->fake_select_lex;
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	  }
 	;
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select_derived2:
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        {
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	  LEX *lex= Lex;
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	  lex->derived_tables|= DERIVED_SUBQUERY;
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	  if (((int)lex->sql_command >= (int)SQLCOM_HA_OPEN &&
	       lex->sql_command <= (int)SQLCOM_HA_READ) ||
	       lex->sql_command == (int)SQLCOM_KILL)
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	  {
	    yyerror(ER(ER_SYNTAX_ERROR));
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	    YYABORT;
	  }
5037
	  if (lex->current_select->linkage == GLOBAL_OPTIONS_TYPE ||
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              mysql_new_select(lex, 1))
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	    YYABORT;
	  mysql_init_select(lex);
5041
	  lex->current_select->linkage= DERIVED_TABLE_TYPE;
5042
	  lex->current_select->parsing_place= SELECT_LIST;
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	}
        select_options select_item_list
	{
5046
	  Select->parsing_place= NO_MATTER;
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	}
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	opt_select_from
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        ;
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opt_outer:
	/* empty */	{}
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	| OUTER		{};
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opt_key_definition:
	/* empty */	{}
	| USE_SYM    key_usage_list
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          {
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	    SELECT_LEX *sel= Select;
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	    sel->use_index= *$2;
	    sel->use_index_ptr= &sel->use_index;
	  }
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	| FORCE_SYM key_usage_list
          {
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	    SELECT_LEX *sel= Select;
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	    sel->use_index= *$2;
	    sel->use_index_ptr= &sel->use_index;
	    sel->table_join_options|= TL_OPTION_FORCE_INDEX;
	  }
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	| IGNORE_SYM key_usage_list
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	  {
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	    SELECT_LEX *sel= Select;
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	    sel->ignore_index= *$2;
	    sel->ignore_index_ptr= &sel->ignore_index;
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	  };
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key_usage_list:
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	key_or_index { Select->interval_list.empty(); }
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        '(' key_list_or_empty ')'
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        { $$= &Select->interval_list; }
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	;

key_list_or_empty:
	/* empty */ 		{}
	| key_usage_list2	{}
	;
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key_usage_list2:
	key_usage_list2 ',' ident
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        { Select->
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	    interval_list.push_back(new (YYTHD->mem_root) String((const char*) $3.str, $3.length,
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				    system_charset_info)); }
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	| ident
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        { Select->
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	    interval_list.push_back(new (YYTHD->mem_root) String((const char*) $1.str, $1.length,
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				    system_charset_info)); }
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	| PRIMARY_SYM
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        { Select->
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	    interval_list.push_back(new (YYTHD->mem_root) String("PRIMARY", 7,
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				    system_charset_info)); };
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using_list:
	ident
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	  {
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	    SELECT_LEX *sel= Select;
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	    if (!($$= new Item_func_eq(new Item_field(sel->db1, sel->table1,
						      $1.str),
				       new Item_field(sel->db2, sel->table2,
						      $1.str))))
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	      YYABORT;
	  }
	| using_list ',' ident
	  {
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	    SELECT_LEX *sel= Select;
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	    if (!($$= new Item_cond_and(new Item_func_eq(new Item_field(sel->db1,sel->table1,$3.str), new Item_field(sel->db2,sel->table2,$3.str)), $1)))
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	      YYABORT;
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	  };
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interval:
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	interval_time_st	{}
	| DAY_HOUR_SYM		{ $$=INTERVAL_DAY_HOUR; }
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	| DAY_MICROSECOND_SYM	{ $$=INTERVAL_DAY_MICROSECOND; }
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	| DAY_MINUTE_SYM	{ $$=INTERVAL_DAY_MINUTE; }
	| DAY_SECOND_SYM	{ $$=INTERVAL_DAY_SECOND; }
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	| HOUR_MICROSECOND_SYM	{ $$=INTERVAL_HOUR_MICROSECOND; }
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	| HOUR_MINUTE_SYM	{ $$=INTERVAL_HOUR_MINUTE; }
	| HOUR_SECOND_SYM	{ $$=INTERVAL_HOUR_SECOND; }
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	| MICROSECOND_SYM	{ $$=INTERVAL_MICROSECOND; }
	| MINUTE_MICROSECOND_SYM	{ $$=INTERVAL_MINUTE_MICROSECOND; }
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	| MINUTE_SECOND_SYM	{ $$=INTERVAL_MINUTE_SECOND; }
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	| SECOND_MICROSECOND_SYM	{ $$=INTERVAL_SECOND_MICROSECOND; }
	| YEAR_MONTH_SYM	{ $$=INTERVAL_YEAR_MONTH; };

interval_time_st:
	DAY_SYM			{ $$=INTERVAL_DAY; }
	| WEEK_SYM		{ $$=INTERVAL_WEEK; }
	| HOUR_SYM		{ $$=INTERVAL_HOUR; }
	| FRAC_SECOND_SYM	{ $$=INTERVAL_MICROSECOND; }
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	| MINUTE_SYM		{ $$=INTERVAL_MINUTE; }
	| MONTH_SYM		{ $$=INTERVAL_MONTH; }
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	| QUARTER_SYM		{ $$=INTERVAL_QUARTER; }
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	| SECOND_SYM		{ $$=INTERVAL_SECOND; }
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	| YEAR_SYM		{ $$=INTERVAL_YEAR; }
        ;
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5146
date_time_type:
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          DATE_SYM              {$$=MYSQL_TIMESTAMP_DATE;}
        | TIME_SYM              {$$=MYSQL_TIMESTAMP_TIME;}
        | DATETIME              {$$=MYSQL_TIMESTAMP_DATETIME;}
        | TIMESTAMP             {$$=MYSQL_TIMESTAMP_DATETIME;}
        ;
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table_alias:
	/* empty */
	| AS
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	| EQ;
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opt_table_alias:
	/* empty */		{ $$=0; }
	| table_alias ident
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	  { $$= (LEX_STRING*) sql_memdup(&$2,sizeof(LEX_STRING)); };
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opt_all:
	/* empty */
	| ALL
	;
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where_clause:
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	/* empty */  { Select->where= 0; }
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	| WHERE
          {
            Select->parsing_place= IN_WHERE;
          }
          expr
5175
	  {
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            SELECT_LEX *select= Select;
	    select->where= $3;
            select->parsing_place= NO_MATTER;
	    if ($3)
	      $3->top_level_item();
5181
	  }
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 	;
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having_clause:
	/* empty */
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	| HAVING
	  {
5188
	    Select->parsing_place= IN_HAVING;
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          }
	  expr
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	  {
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	    SELECT_LEX *sel= Select;
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	    sel->having= $3;
5194
	    sel->parsing_place= NO_MATTER;
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	    if ($3)
	      $3->top_level_item();
	  }
5198
	;
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opt_escape:
5201 5202
	ESCAPE_SYM simple_expr { $$= $2; }
	| /* empty */
5203 5204 5205 5206 5207
          {

            $$= ((YYTHD->variables.sql_mode & MODE_NO_BACKSLASH_ESCAPES) ?
		 new Item_string("", 0, &my_charset_latin1) :
                 new Item_string("\\", 1, &my_charset_latin1));
5208 5209
          }
        ;
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/*
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   group by statement in select
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*/

group_clause:
	/* empty */
5218
	| GROUP BY group_list olap_opt;
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group_list:
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	group_list ',' order_ident order_dir
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	  { if (add_group_to_list(YYTHD, $3,(bool) $4)) YYABORT; }
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	| order_ident order_dir
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	  { if (add_group_to_list(YYTHD, $1,(bool) $2)) YYABORT; };
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5226 5227
olap_opt:
	/* empty */ {}
5228
	| WITH CUBE_SYM
5229
          {
5230
	    LEX *lex=Lex;
5231 5232
	    if (lex->current_select->linkage == GLOBAL_OPTIONS_TYPE)
	    {
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	      my_error(ER_WRONG_USAGE, MYF(0), "WITH CUBE",
5234 5235 5236
		       "global union parameters");
	      YYABORT;
	    }
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	    lex->current_select->olap= CUBE_TYPE;
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	    my_error(ER_NOT_SUPPORTED_YET, MYF(0), "CUBE");
5239
	    YYABORT;	/* To be deleted in 5.1 */
5240
	  }
5241
	| WITH ROLLUP_SYM
5242
          {
5243 5244 5245
	    LEX *lex= Lex;
	    if (lex->current_select->linkage == GLOBAL_OPTIONS_TYPE)
	    {
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	      my_error(ER_WRONG_USAGE, MYF(0), "WITH ROLLUP",
5247 5248 5249
		       "global union parameters");
	      YYABORT;
	    }
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	    lex->current_select->olap= ROLLUP_TYPE;
5251
	  }
5252
	;
5253

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/*
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   Order by statement in select
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*/

5258
opt_order_clause:
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	/* empty */
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	| order_clause;
5261 5262

order_clause:
5263 5264
	ORDER_SYM BY
        {
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	  LEX *lex=Lex;
5266
	  if (lex->current_select->linkage != GLOBAL_OPTIONS_TYPE &&
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	      lex->current_select->olap !=
5268
	      UNSPECIFIED_OLAP_TYPE)
5269
	  {
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	    my_error(ER_WRONG_USAGE, MYF(0),
                     "CUBE/ROLLUP", "ORDER BY");
5272 5273
	    YYABORT;
	  }
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	} order_list;
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order_list:
	order_list ',' order_ident order_dir
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	  { if (add_order_to_list(YYTHD, $3,(bool) $4)) YYABORT; }
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	| order_ident order_dir
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	  { if (add_order_to_list(YYTHD, $1,(bool) $2)) YYABORT; };
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order_dir:
	/* empty */ { $$ =  1; }
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	| ASC  { $$ =1; }
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	| DESC { $$ =0; };
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5288 5289 5290
opt_limit_clause_init:
	/* empty */
	{
5291 5292
	  LEX *lex= Lex;
	  SELECT_LEX *sel= lex->current_select;
5293
          sel->offset_limit= 0L;
5294
          sel->select_limit= HA_POS_ERROR;
5295
	}
5296 5297 5298
	| limit_clause {}
	;

5299 5300 5301 5302 5303
opt_limit_clause:
	/* empty */	{}
	| limit_clause	{}
	;

5304
limit_clause:
5305
	LIMIT limit_options {}
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	;
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limit_options:
	ULONG_NUM
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	  {
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            SELECT_LEX *sel= Select;
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            sel->select_limit= $1;
            sel->offset_limit= 0L;
5314
	    sel->explicit_limit= 1;
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	  }
	| ULONG_NUM ',' ULONG_NUM
	  {
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	    SELECT_LEX *sel= Select;
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	    sel->select_limit= $3;
	    sel->offset_limit= $1;
5321
	    sel->explicit_limit= 1;
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	  }
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	| ULONG_NUM OFFSET_SYM ULONG_NUM
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	  {
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	    SELECT_LEX *sel= Select;
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	    sel->select_limit= $1;
	    sel->offset_limit= $3;
5328
	    sel->explicit_limit= 1;
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	  }
	;
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delete_limit_clause:
	/* empty */
	{
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	  LEX *lex=Lex;
5337
	  lex->current_select->select_limit= HA_POS_ERROR;
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	}
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	| LIMIT ulonglong_num
5340 5341 5342 5343 5344
	{
	  SELECT_LEX *sel= Select;
	  sel->select_limit= (ha_rows) $2;
	  sel->explicit_limit= 1;
	};
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ULONG_NUM:
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	NUM	        { int error; $$= (ulong) my_strtoll10($1.str, (char**) 0, &error); }
	| LONG_NUM      { int error; $$= (ulong) my_strtoll10($1.str, (char**) 0, &error); }
	| ULONGLONG_NUM { int error; $$= (ulong) my_strtoll10($1.str, (char**) 0, &error); }
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        | DECIMAL_NUM 	{ int error; $$= (ulong) my_strtoll10($1.str, (char**) 0, &error); }
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	| FLOAT_NUM	{ int error; $$= (ulong) my_strtoll10($1.str, (char**) 0, &error); }
	;
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ulonglong_num:
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	NUM	    { int error; $$= (ulonglong) my_strtoll10($1.str, (char**) 0, &error); }
	| ULONGLONG_NUM { int error; $$= (ulonglong) my_strtoll10($1.str, (char**) 0, &error); }
	| LONG_NUM  { int error; $$= (ulonglong) my_strtoll10($1.str, (char**) 0, &error); }
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        | DECIMAL_NUM  { int error; $$= (ulonglong) my_strtoll10($1.str, (char**) 0, &error); }
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	| FLOAT_NUM { int error; $$= (ulonglong) my_strtoll10($1.str, (char**) 0, &error); }
	;
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procedure_clause:
	/* empty */
	| PROCEDURE ident			/* Procedure name */
	  {
	    LEX *lex=Lex;
5367 5368
	    if (&lex->select_lex != lex->current_select)
	    {
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	      my_error(ER_WRONG_USAGE, MYF(0), "PROCEDURE", "subquery");
5370 5371
	      YYABORT;
	    }
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	    lex->proc_list.elements=0;
	    lex->proc_list.first=0;
	    lex->proc_list.next= (byte**) &lex->proc_list.first;
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	    if (add_proc_to_list(lex->thd, new Item_field(NULL,NULL,$2.str)))
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	      YYABORT;
5377
	    Lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
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	  }
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	  '(' procedure_list ')';
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procedure_list:
	/* empty */ {}
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	| procedure_list2 {};
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procedure_list2:
	procedure_list2 ',' procedure_item
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	| procedure_item;
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procedure_item:
	  remember_name expr
	  {
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	    LEX *lex= Lex;
	    if (add_proc_to_list(lex->thd, $2))
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	      YYABORT;
	    if (!$2->name)
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	      $2->set_name($1,(uint) ((char*) lex->tok_end - $1), YYTHD->charset());
5398 5399 5400 5401 5402 5403
	  }
          ;


select_var_list_init:
	   {
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             LEX *lex=Lex;
	     if (!lex->describe && (!(lex->result= new select_dumpvar())))
5406 5407
	        YYABORT;
	   }
5408
	   select_var_list
5409
	   {}
5410
           ;
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select_var_list:
5413 5414 5415 5416
	   select_var_list ',' select_var_ident
	   | select_var_ident {}
           ;

5417 5418 5419 5420 5421 5422 5423 5424 5425 5426
select_var_ident:  
	   '@' ident_or_text
           {
             LEX *lex=Lex;
	     if (lex->result) 
	       ((select_dumpvar *)lex->result)->var_list.push_back( new my_var($2,0,0,(enum_field_types)0));
	     else
	       YYABORT;
	   }
           | ident_or_text
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           {
5428
             LEX *lex=Lex;
5429 5430 5431 5432
	     sp_pvar_t *t;

	     if (!lex->spcont || !(t=lex->spcont->find_pvar(&$1)))
	     {
5433
	       my_error(ER_SP_UNDECLARED_VAR, MYF(0), $1.str);
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	       YYABORT;
5435 5436 5437 5438 5439 5440 5441 5442
	     }
	     if (! lex->result)
	       YYABORT;
	     else
	     {
	       ((select_dumpvar *)lex->result)->var_list.push_back( new my_var($1,1,t->offset,t->type));
	       t->isset= TRUE;
	     }
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	   }
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           ;
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5446
into:
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        INTO OUTFILE TEXT_STRING_sys
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5448
	{
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          LEX *lex= Lex;
5450 5451 5452 5453
          lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
          if (!(lex->exchange= new sql_exchange($3.str, 0)) ||
              !(lex->result= new select_export(lex->exchange)))
            YYABORT;
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	}
	opt_field_term opt_line_term
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5456
	| INTO DUMPFILE TEXT_STRING_sys
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5457
	{
5458
	  LEX *lex=Lex;
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5459 5460
	  if (!lex->describe)
	  {
5461
	    lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
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	    if (!(lex->exchange= new sql_exchange($3.str,1)))
	      YYABORT;
	    if (!(lex->result= new select_dump(lex->exchange)))
	      YYABORT;
	  }
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	}
5468
        | INTO select_var_list_init
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	{
5470
	  Lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
5471 5472
	}
        ;
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5474 5475 5476
/*
  DO statement
*/
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5477

5478
do:	DO_SYM
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	{
	  LEX *lex=Lex;
	  lex->sql_command = SQLCOM_DO;
5482 5483 5484 5485 5486
	  mysql_init_select(lex);
	}
	expr_list
	{
	  Lex->insert_list= $3;
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	}
5488 5489
	;

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/*
5491
  Drop : delete tables or index or user
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*/

drop:
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	DROP opt_temporary table_or_tables if_exists table_list opt_restrict
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	{
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	  LEX *lex=Lex;
	  lex->sql_command = SQLCOM_DROP_TABLE;
5499 5500
	  lex->drop_temporary= $2;
	  lex->drop_if_exists= $4;
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	}
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	| DROP INDEX_SYM ident ON table_ident {}
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	  {
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	     LEX *lex=Lex;
	     lex->sql_command= SQLCOM_DROP_INDEX;
5506 5507 5508
	     lex->alter_info.drop_list.empty();
	     lex->alter_info.drop_list.push_back(new Alter_drop(Alter_drop::KEY,
                                                                $3.str));
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	     if (!lex->current_select->add_table_to_list(lex->thd, $5, NULL,
							TL_OPTION_UPDATING))
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	      YYABORT;
	  }
	| DROP DATABASE if_exists ident
	  {
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	    LEX *lex=Lex;
	    lex->sql_command= SQLCOM_DROP_DB;
	    lex->drop_if_exists=$3;
	    lex->name=$4.str;
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	 }
5520
	| DROP FUNCTION_SYM if_exists sp_name
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5521
	  {
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	    LEX *lex=Lex;
5523 5524
	    if (lex->sphead)
	    {
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	      my_error(ER_SP_NO_DROP_SP, MYF(0), "FUNCTION");
5526 5527
	      YYABORT;
	    }
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	    lex->sql_command = SQLCOM_DROP_FUNCTION;
5529 5530 5531 5532 5533 5534 5535 5536
	    lex->drop_if_exists= $3;
	    lex->spname= $4;
	  }
	| DROP PROCEDURE if_exists sp_name
	  {
	    LEX *lex=Lex;
	    if (lex->sphead)
	    {
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	      my_error(ER_SP_NO_DROP_SP, MYF(0), "PROCEDURE");
5538 5539 5540 5541 5542
	      YYABORT;
	    }
	    lex->sql_command = SQLCOM_DROP_PROCEDURE;
	    lex->drop_if_exists= $3;
	    lex->spname= $4;
5543
	  }
5544
	| DROP USER clear_privileges user_list
5545
	  {
5546 5547
	    Lex->sql_command = SQLCOM_DROP_USER;
          }
5548 5549 5550 5551 5552 5553 5554 5555 5556 5557
	| DROP VIEW_SYM if_exists table_list opt_restrict
	  {
	    THD *thd= YYTHD;
	    LEX *lex= thd->lex;
	    lex->sql_command= SQLCOM_DROP_VIEW;
	    lex->drop_if_exists= $3;
	  }
        | DROP TRIGGER_SYM ident '.' ident
          {
            LEX *lex= Lex;
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5559 5560 5561 5562 5563 5564 5565 5566
            lex->sql_command= SQLCOM_DROP_TRIGGER;
            /* QQ: Could we loosen lock type in certain cases ? */
            if (!lex->select_lex.add_table_to_list(YYTHD,
                                                   new Table_ident($3),
                                                   (LEX_STRING*) 0,
                                                   TL_OPTION_UPDATING,
                                                   TL_WRITE))
              YYABORT;
5567
            lex->ident= $5;
5568 5569
          }
	;
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table_list:
5572
	table_name
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	| table_list ',' table_name;
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5575
table_name:
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	table_ident
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	{
	  if (!Select->add_table_to_list(YYTHD, $1, NULL, TL_OPTION_UPDATING))
	    YYABORT;
	}
	;
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if_exists:
5584
	/* empty */ { $$= 0; }
5585 5586
	| IF EXISTS { $$= 1; }
	;
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5588 5589 5590 5591
opt_temporary:
	/* empty */ { $$= 0; }
	| TEMPORARY { $$= 1; }
	;
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/*
** Insert : add new data to table
*/

insert:
5597 5598 5599
	INSERT
	{
	  LEX *lex= Lex;
5600 5601
	  lex->sql_command= SQLCOM_INSERT;
	  lex->duplicates= DUP_ERROR; 
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	  mysql_init_select(lex);
5603 5604
	  /* for subselects */
          lex->lock_option= (using_update_log) ? TL_READ_NO_INSERT : TL_READ;
5605
	  lex->select_lex.resolve_mode= SELECT_LEX::INSERT_MODE;
5606
	} insert_lock_option
5607
	opt_ignore insert2
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	{
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	  Select->set_lock_for_tables($3);
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	  Lex->current_select= &Lex->select_lex;
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	}
5612
	insert_field_spec opt_insert_update
5613
	{}
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	;
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replace:
5617 5618
	REPLACE
	{
5619
	  LEX *lex=Lex;
5620 5621
	  lex->sql_command = SQLCOM_REPLACE;
	  lex->duplicates= DUP_REPLACE;
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	  mysql_init_select(lex);
5623
	  lex->select_lex.resolve_mode= SELECT_LEX::INSERT_MODE;
5624
	}
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	replace_lock_option insert2
	{
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	  Select->set_lock_for_tables($3);
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	  Lex->current_select= &Lex->select_lex;
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	}
	insert_field_spec
5631
	{}
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	;
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insert_lock_option:
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	/* empty */	{ $$= TL_WRITE_CONCURRENT_INSERT; }
	| LOW_PRIORITY	{ $$= TL_WRITE_LOW_PRIORITY; }
	| DELAYED_SYM	{ $$= TL_WRITE_DELAYED; }
	| HIGH_PRIORITY { $$= TL_WRITE; }
5639
	;
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replace_lock_option:
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	opt_low_priority { $$= $1; }
	| DELAYED_SYM	 { $$= TL_WRITE_DELAYED; };
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insert2:
	INTO insert_table {}
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	| insert_table {};
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insert_table:
5650
	table_name
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	{
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	  LEX *lex=Lex;
	  lex->field_list.empty();
	  lex->many_values.empty();
	  lex->insert_list=0;
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	};
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insert_field_spec:
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	insert_values {}
	| '(' ')' insert_values {}
	| '(' fields ')' insert_values {}
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	| SET
	  {
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	    LEX *lex=Lex;
	    if (!(lex->insert_list = new List_item) ||
		lex->many_values.push_back(lex->insert_list))
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	      YYABORT;
	   }
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	   ident_eq_list;
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opt_field_spec:
	/* empty */	  { }
	| '(' fields ')'  { }
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	| '(' ')'	  { };
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fields:
	fields ',' insert_ident { Lex->field_list.push_back($3); }
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	| insert_ident		{ Lex->field_list.push_back($1); };
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insert_values:
	VALUES	values_list  {}
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	| VALUE_SYM values_list  {}
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	|     create_select     { Select->set_braces(0);} union_clause {}
	| '(' create_select ')' { Select->set_braces(1);} union_opt {}
5685
        ;
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values_list:
	values_list ','  no_braces
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	| no_braces;
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ident_eq_list:
	ident_eq_list ',' ident_eq_value
	|
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	ident_eq_value;
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ident_eq_value:
5697
	simple_ident_nospvar equal expr_or_default
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	 {
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	  LEX *lex=Lex;
	  if (lex->field_list.push_back($1) ||
	      lex->insert_list->push_back($3))
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	    YYABORT;
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	 };
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equal:	EQ		{}
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	| SET_VAR	{}
	;

opt_equal:
	/* empty */	{}
	| equal		{}
	;
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no_braces:
	 '('
	 {
	    if (!(Lex->insert_list = new List_item))
	      YYABORT;
	 }
	 opt_values ')'
	 {
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	  LEX *lex=Lex;
	  if (lex->many_values.push_back(lex->insert_list))
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	    YYABORT;
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	 };
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opt_values:
	/* empty */ {}
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	| values;
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values:
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	values ','  expr_or_default
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	{
	  if (Lex->insert_list->push_back($3))
	    YYABORT;
	}
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	| expr_or_default
	  {
	    if (Lex->insert_list->push_back($1))
	      YYABORT;
	  }
	;

expr_or_default:
5745
	expr	  { $$= $1;}
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	| DEFAULT {$$= new Item_default_value(); }
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	;
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opt_insert_update:
        /* empty */
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        | ON DUPLICATE_SYM	{ Lex->duplicates= DUP_UPDATE; }
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          KEY_SYM UPDATE_SYM insert_update_list
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        ;

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/* Update rows in a table */

update:
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	UPDATE_SYM
	{
5760
	  LEX *lex= Lex;
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	  mysql_init_select(lex);
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          lex->sql_command= SQLCOM_UPDATE;
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	  lex->lock_option= TL_UNLOCK; 	/* Will be set later */
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	  lex->duplicates= DUP_ERROR; 
5765
        }
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        opt_low_priority opt_ignore join_table_list
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	SET update_list
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	{
5769 5770
	  LEX *lex= Lex;
          if (lex->select_lex.table_list.elements > 1)
5771
	  {
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            lex->sql_command= SQLCOM_UPDATE_MULTI;
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	    lex->multi_lock_option= $3;
5774
	  }
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	  else if (lex->select_lex.get_table_list()->derived)
	  {
	    /* it is single table update and it is update of derived table */
5778 5779
	    my_error(ER_NON_UPDATABLE_TABLE, MYF(0),
                     lex->select_lex.get_table_list()->alias, "UPDATE");
5780 5781
	    YYABORT;
	  }
5782
	  else
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	    Select->set_lock_for_tables($3);
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	}
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	where_clause opt_order_clause delete_limit_clause {}
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	;
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update_list:
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	update_list ',' update_elem
	| update_elem;

update_elem:
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	simple_ident_nospvar equal expr_or_default
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	{
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	  if (add_item_to_list(YYTHD, $1) || add_value_to_list(YYTHD, $3))
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	    YYABORT;
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	};

insert_update_list:
	insert_update_list ',' insert_update_elem
	| insert_update_elem;

insert_update_elem:
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	simple_ident_nospvar equal expr_or_default
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	  {
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	  LEX *lex= Lex;
	  if (lex->update_list.push_back($1) || 
	      lex->value_list.push_back($3))
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	      YYABORT;
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	  };
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opt_low_priority:
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	/* empty */	{ $$= YYTHD->update_lock_default; }
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	| LOW_PRIORITY	{ $$= TL_WRITE_LOW_PRIORITY; };
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/* Delete rows from a table */

delete:
5819
	DELETE_SYM
5820
	{
5821 5822
	  LEX *lex= Lex;
	  lex->sql_command= SQLCOM_DELETE;
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	  mysql_init_select(lex);
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	  lex->lock_option= lex->thd->update_lock_default;
5825
	  lex->ignore= 0;
5826
	  lex->select_lex.init_order();
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	}
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	opt_delete_options single_multi {}
	;
5830 5831

single_multi:
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 	FROM table_ident
	{
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	  if (!Select->add_table_to_list(YYTHD, $2, NULL, TL_OPTION_UPDATING,
					 Lex->lock_option))
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	    YYABORT;
	}
	where_clause opt_order_clause
5839
	delete_limit_clause {}
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	| table_wild_list
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	  { mysql_init_multi_delete(Lex); }
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          FROM join_table_list where_clause
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	| FROM table_wild_list
	  { mysql_init_multi_delete(Lex); }
5845 5846 5847
	  USING join_table_list where_clause
	  {}
	;
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table_wild_list:
	  table_wild_one {}
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	  | table_wild_list ',' table_wild_one {};
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table_wild_one:
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	ident opt_wild opt_table_alias
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	{
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	  if (!Select->add_table_to_list(YYTHD, new Table_ident($1), $3,
					 TL_OPTION_UPDATING, Lex->lock_option))
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	    YYABORT;
        }
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	| ident '.' ident opt_wild opt_table_alias
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	  {
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	    if (!Select->add_table_to_list(YYTHD,
					   new Table_ident(YYTHD, $1, $3, 0),
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					   $5, TL_OPTION_UPDATING,
					   Lex->lock_option))
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	      YYABORT;
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	  }
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	;
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opt_wild:
5871
	/* empty */	{}
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	| '.' '*'	{};
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5875
opt_delete_options:
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	/* empty */	{}
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	| opt_delete_option opt_delete_options {};
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opt_delete_option:
5880
	QUICK		{ Select->options|= OPTION_QUICK; }
5881
	| LOW_PRIORITY	{ Lex->lock_option= TL_WRITE_LOW_PRIORITY; }
5882
	| IGNORE_SYM	{ Lex->ignore= 1; };
5883

5884
truncate:
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	TRUNCATE_SYM opt_table_sym table_name
5886
	{
5887
	  LEX* lex= Lex;
5888
	  lex->sql_command= SQLCOM_TRUNCATE;
5889
	  lex->select_lex.options= 0;
5890
	  lex->select_lex.init_order();
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	}
	;
5893

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opt_table_sym:
	/* empty */
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	| TABLE_SYM;
5897

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/* Show things */

5900 5901
show:	SHOW
	{
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	  LEX *lex=Lex;
	  lex->wild=0;
5904 5905 5906
          lex->lock_option= TL_READ;
          mysql_init_select(lex);
          lex->current_select->parsing_place= SELECT_LIST;
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	  bzero((char*) &lex->create_info,sizeof(lex->create_info));
	}
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	show_param
5910 5911
	{}
	;
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show_param:
5914
         DATABASES wild_and_where
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         {
           LEX *lex= Lex;
           lex->sql_command= SQLCOM_SELECT;
           lex->orig_sql_command= SQLCOM_SHOW_DATABASES;
           if (prepare_schema_table(YYTHD, lex, 0, SCH_SCHEMATA))
             YYABORT;
         }
5922
         | opt_full TABLES opt_db wild_and_where
5923 5924 5925 5926
           {
             LEX *lex= Lex;
             lex->sql_command= SQLCOM_SELECT;
             lex->orig_sql_command= SQLCOM_SHOW_TABLES;
5927
             lex->select_lex.db= $3;
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             if (prepare_schema_table(YYTHD, lex, 0, SCH_TABLE_NAMES))
               YYABORT;
           }
5931
         | TABLE_SYM STATUS_SYM opt_db wild_and_where
5932 5933 5934 5935
           {
             LEX *lex= Lex;
             lex->sql_command= SQLCOM_SELECT;
             lex->orig_sql_command= SQLCOM_SHOW_TABLE_STATUS;
5936
             lex->select_lex.db= $3;
5937 5938 5939
             if (prepare_schema_table(YYTHD, lex, 0, SCH_TABLES))
               YYABORT;
           }
5940
        | OPEN_SYM TABLES opt_db wild_and_where
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	  {
5942
	    LEX *lex= Lex;
5943 5944
            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_OPEN_TABLES;
5945
	    lex->select_lex.db= $3;
5946 5947
            if (prepare_schema_table(YYTHD, lex, 0, SCH_OPEN_TABLES))
              YYABORT;
5948
	  }
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	| ENGINE_SYM storage_engines 
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	  { Lex->create_info.db_type= $2; }
	  show_engine_param
5952
	| opt_full COLUMNS from_or_in table_ident opt_db wild_and_where
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	  {
5954 5955 5956
 	    LEX *lex= Lex;
	    lex->sql_command= SQLCOM_SELECT;
	    lex->orig_sql_command= SQLCOM_SHOW_FIELDS;
5957 5958 5959
	    if ($5)
	      $4->change_db($5);
	    if (prepare_schema_table(YYTHD, lex, $4, SCH_COLUMNS))
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	      YYABORT;
	  }
5962
        | NEW_SYM MASTER_SYM FOR_SYM SLAVE WITH MASTER_LOG_FILE_SYM EQ
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	  TEXT_STRING_sys AND_SYM MASTER_LOG_POS_SYM EQ ulonglong_num
	  AND_SYM MASTER_SERVER_ID_SYM EQ
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	ULONG_NUM
          {
	    Lex->sql_command = SQLCOM_SHOW_NEW_MASTER;
	    Lex->mi.log_file_name = $8.str;
	    Lex->mi.pos = $12;
5970
	    Lex->mi.server_id = $16;
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          }
5972
        | master_or_binary LOGS_SYM
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          {
	    Lex->sql_command = SQLCOM_SHOW_BINLOGS;
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          }
        | SLAVE HOSTS_SYM
          {
	    Lex->sql_command = SQLCOM_SHOW_SLAVE_HOSTS;
          }
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        | BINLOG_SYM EVENTS_SYM binlog_in binlog_from
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          {
5982 5983
	    LEX *lex= Lex;
	    lex->sql_command= SQLCOM_SHOW_BINLOG_EVENTS;
5984
          } opt_limit_clause_init
5985
        | keys_or_index from_or_in table_ident opt_db where_clause
5986 5987 5988 5989
          {
            LEX *lex= Lex;
            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_KEYS;
5990 5991 5992
	    if ($4)
	      $3->change_db($4);
            if (prepare_schema_table(YYTHD, lex, $3, SCH_STATISTICS))
5993
              YYABORT;
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	  }
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	| COLUMN_SYM TYPES_SYM
	  {
	    LEX *lex=Lex;
	    lex->sql_command= SQLCOM_SHOW_COLUMN_TYPES;
	  }
	| TABLE_SYM TYPES_SYM
	  {
	    LEX *lex=Lex;
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	    lex->sql_command= SQLCOM_SHOW_STORAGE_ENGINES;
	    WARN_DEPRECATED("SHOW TABLE TYPES", "SHOW [STORAGE] ENGINES");
	  }
	| opt_storage ENGINES_SYM
	  {
	    LEX *lex=Lex;
	    lex->sql_command= SQLCOM_SHOW_STORAGE_ENGINES;
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	  }
	| PRIVILEGES
	  {
	    LEX *lex=Lex;
	    lex->sql_command= SQLCOM_SHOW_PRIVILEGES;
	  }
6016
        | COUNT_SYM '(' '*' ')' WARNINGS
6017
          { (void) create_select_for_variable("warning_count"); }
6018
        | COUNT_SYM '(' '*' ')' ERRORS
6019
	  { (void) create_select_for_variable("error_count"); }
6020
        | WARNINGS opt_limit_clause_init
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          { Lex->sql_command = SQLCOM_SHOW_WARNS;}
6022
        | ERRORS opt_limit_clause_init
6023
          { Lex->sql_command = SQLCOM_SHOW_ERRORS;}
6024
        | opt_var_type STATUS_SYM wild_and_where
6025
          {
6026 6027 6028 6029 6030 6031
            LEX *lex= Lex;
            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_STATUS;
            lex->option_type= (enum_var_type) $1;
            if (prepare_schema_table(YYTHD, lex, 0, SCH_STATUS))
              YYABORT;
6032
	  }	
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        | INNOBASE_SYM STATUS_SYM
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          { Lex->sql_command = SQLCOM_SHOW_INNODB_STATUS; WARN_DEPRECATED("SHOW INNODB STATUS", "SHOW ENGINE INNODB STATUS"); }
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        | MUTEX_SYM STATUS_SYM
          { Lex->sql_command = SQLCOM_SHOW_MUTEX_STATUS; }
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	| opt_full PROCESSLIST_SYM
	  { Lex->sql_command= SQLCOM_SHOW_PROCESSLIST;}
6039
        | opt_var_type  VARIABLES wild_and_where
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	  {
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            LEX *lex= Lex;
            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_VARIABLES;
            lex->option_type= (enum_var_type) $1;
            if (prepare_schema_table(YYTHD, lex, 0, SCH_VARIABLES))
              YYABORT;
6047
	  }
6048
        | charset wild_and_where
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          {
            LEX *lex= Lex;
            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_CHARSETS;
            if (prepare_schema_table(YYTHD, lex, 0, SCH_CHARSETS))
              YYABORT;
          }
6056
        | COLLATION_SYM wild_and_where
6057 6058 6059 6060 6061 6062 6063
          {
            LEX *lex= Lex;
            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_COLLATIONS;
            if (prepare_schema_table(YYTHD, lex, 0, SCH_COLLATIONS))
              YYABORT;
          }
6064
	| BERKELEY_DB_SYM LOGS_SYM
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	  { Lex->sql_command= SQLCOM_SHOW_LOGS; WARN_DEPRECATED("SHOW BDB LOGS", "SHOW ENGINE BDB LOGS"); }
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	| LOGS_SYM
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	  { Lex->sql_command= SQLCOM_SHOW_LOGS; WARN_DEPRECATED("SHOW LOGS", "SHOW ENGINE BDB LOGS"); }
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	| GRANTS
	  {
	    LEX *lex=Lex;
	    lex->sql_command= SQLCOM_SHOW_GRANTS;
	    THD *thd= lex->thd;
	    LEX_USER *curr_user;
            if (!(curr_user= (LEX_USER*) thd->alloc(sizeof(st_lex_user))))
              YYABORT;
            curr_user->user.str= thd->priv_user;
            curr_user->user.length= strlen(thd->priv_user);
            if (*thd->priv_host != 0)
            {
              curr_user->host.str= thd->priv_host;
              curr_user->host.length= strlen(thd->priv_host);
            }
            else
            {
              curr_user->host.str= (char *) "%";
              curr_user->host.length= 1;
            }
6088
            curr_user->password=null_lex_str;
6089 6090
	    lex->grant_user= curr_user;
	  }
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	| GRANTS FOR_SYM user
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	  {
	    LEX *lex=Lex;
	    lex->sql_command= SQLCOM_SHOW_GRANTS;
	    lex->grant_user=$3;
6096
	    lex->grant_user->password=null_lex_str;
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	  }
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	| CREATE DATABASE opt_if_not_exists ident
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	  {
	    Lex->sql_command=SQLCOM_SHOW_CREATE_DB;
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	    Lex->create_info.options=$3;
	    Lex->name=$4.str;
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	  }
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        | CREATE TABLE_SYM table_ident
          {
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            LEX *lex= Lex;
	    lex->sql_command = SQLCOM_SHOW_CREATE;
	    if (!lex->select_lex.add_table_to_list(YYTHD, $3, NULL,0))
	      YYABORT;
            lex->only_view= 0;
	  }
        | CREATE VIEW_SYM table_ident
          {
            LEX *lex= Lex;
	    lex->sql_command = SQLCOM_SHOW_CREATE;
	    if (!lex->select_lex.add_table_to_list(YYTHD, $3, NULL, 0))
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	      YYABORT;
6118
            lex->only_view= 1;
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	  }
        | MASTER_SYM STATUS_SYM
          {
	    Lex->sql_command = SQLCOM_SHOW_MASTER_STAT;
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          }
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        | SLAVE STATUS_SYM
          {
	    Lex->sql_command = SQLCOM_SHOW_SLAVE_STAT;
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          }
	| CREATE PROCEDURE sp_name
	  {
	    LEX *lex= Lex;

	    lex->sql_command = SQLCOM_SHOW_CREATE_PROC;
	    lex->spname= $3;
	  }
	| CREATE FUNCTION_SYM sp_name
	  {
	    LEX *lex= Lex;

	    lex->sql_command = SQLCOM_SHOW_CREATE_FUNC;
	    lex->spname= $3;
	  }
6142
	| PROCEDURE STATUS_SYM wild_and_where
6143
	  {
6144 6145 6146
            LEX *lex= Lex;
            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_STATUS_PROC;
6147 6148
	    if (!sp_add_to_query_tables(YYTHD, lex, "mysql", "proc", TL_READ))
	      YYABORT;
6149 6150
            if (prepare_schema_table(YYTHD, lex, 0, SCH_PROCEDURES))
              YYABORT;
6151
	  }
6152
	| FUNCTION_SYM STATUS_SYM wild_and_where
6153
	  {
6154 6155 6156
            LEX *lex= Lex;
            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_STATUS_FUNC;
6157 6158
	    if (!sp_add_to_query_tables(YYTHD, lex, "mysql", "proc", TL_READ))
	      YYABORT;
6159 6160
            if (prepare_schema_table(YYTHD, lex, 0, SCH_PROCEDURES))
              YYABORT;
6161
	  };
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show_engine_param:
	STATUS_SYM
	  {
	    switch (Lex->create_info.db_type) {
	    case DB_TYPE_INNODB:
	      Lex->sql_command = SQLCOM_SHOW_INNODB_STATUS;
	      break;
	    default:
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	      my_error(ER_NOT_SUPPORTED_YET, MYF(0), "STATUS");
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	      YYABORT;
	    }
	  }
	| LOGS_SYM
	  {
	    switch (Lex->create_info.db_type) {
	    case DB_TYPE_BERKELEY_DB:
	      Lex->sql_command = SQLCOM_SHOW_LOGS;
	      break;
	    default:
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	      my_error(ER_NOT_SUPPORTED_YET, MYF(0), "LOGS");
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	      YYABORT;
	    }
	  };

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master_or_binary:
	MASTER_SYM
	| BINARY;

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opt_storage:
	/* empty */
	| STORAGE_SYM;

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opt_db:
	/* empty */  { $$= 0; }
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	| from_or_in ident { $$= $2.str; };
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opt_full:
	/* empty */ { Lex->verbose=0; }
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	| FULL	    { Lex->verbose=1; };
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from_or_in:
	FROM
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	| IN_SYM;
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binlog_in:
	/* empty */ { Lex->mi.log_file_name = 0; }
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        | IN_SYM TEXT_STRING_sys { Lex->mi.log_file_name = $2.str; };
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binlog_from:
	/* empty */ { Lex->mi.pos = 4; /* skip magic number */ }
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        | FROM ulonglong_num { Lex->mi.pos = $2; };
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wild_and_where:
      /* empty */
      | LIKE TEXT_STRING_sys
	{ Lex->wild=  new (YYTHD->mem_root) String($2.str, $2.length,
                                                   system_charset_info); }
      | WHERE expr
        {
          Select->where= $2;
          if ($2)
            $2->top_level_item();
        }
      ;

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/* A Oracle compatible synonym for show */
describe:
	describe_command table_ident
	{
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          LEX *lex= Lex;
          lex->lock_option= TL_READ;
          mysql_init_select(lex);
          lex->current_select->parsing_place= SELECT_LIST;
          lex->sql_command= SQLCOM_SELECT;
          lex->orig_sql_command= SQLCOM_SHOW_FIELDS;
          lex->select_lex.db= 0;
          lex->verbose= 0;
          if (prepare_schema_table(YYTHD, lex, $2, SCH_COLUMNS))
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	    YYABORT;
	}
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	opt_describe_column {}
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	| describe_command opt_extended_describe
	  { Lex->describe|= DESCRIBE_NORMAL; }
	  select
6248
          {
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	    LEX *lex=Lex;
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	    lex->select_lex.options|= SELECT_DESCRIBE;
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	  }
	;
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describe_command:
	DESC
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	| DESCRIBE;
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opt_extended_describe:
	/* empty */ {}
	| EXTENDED_SYM { Lex->describe|= DESCRIBE_EXTENDED; }
	;

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opt_describe_column:
	/* empty */	{}
	| text_string	{ Lex->wild= $1; }
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	| ident
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	  { Lex->wild= new (YYTHD->mem_root) String((const char*) $1.str,$1.length,system_charset_info); };
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/* flush things */

flush:
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	FLUSH_SYM opt_no_write_to_binlog
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	{
	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_FLUSH; lex->type=0;
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          lex->no_write_to_binlog= $2;
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	}
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	flush_options
	{}
	;
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flush_options:
	flush_options ',' flush_option
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	| flush_option;
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flush_option:
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	table_or_tables	{ Lex->type|= REFRESH_TABLES; } opt_table_list {}
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	| TABLES WITH READ_SYM LOCK_SYM { Lex->type|= REFRESH_TABLES | REFRESH_READ_LOCK; }
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	| QUERY_SYM CACHE_SYM { Lex->type|= REFRESH_QUERY_CACHE_FREE; }
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	| HOSTS_SYM	{ Lex->type|= REFRESH_HOSTS; }
	| PRIVILEGES	{ Lex->type|= REFRESH_GRANT; }
	| LOGS_SYM	{ Lex->type|= REFRESH_LOG; }
	| STATUS_SYM	{ Lex->type|= REFRESH_STATUS; }
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        | SLAVE         { Lex->type|= REFRESH_SLAVE; }
        | MASTER_SYM    { Lex->type|= REFRESH_MASTER; }
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	| DES_KEY_FILE	{ Lex->type|= REFRESH_DES_KEY_FILE; }
 	| RESOURCES     { Lex->type|= REFRESH_USER_RESOURCES; };
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opt_table_list:
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	/* empty */  {;}
	| table_list {;};
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reset:
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	RESET_SYM
	{
	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_RESET; lex->type=0;
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	} reset_options
	{}
	;

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reset_options:
	reset_options ',' reset_option
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	| reset_option;
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reset_option:
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        SLAVE                 { Lex->type|= REFRESH_SLAVE; }
        | MASTER_SYM          { Lex->type|= REFRESH_MASTER; }
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	| QUERY_SYM CACHE_SYM { Lex->type|= REFRESH_QUERY_CACHE;};
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purge:
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	PURGE
	{
	  LEX *lex=Lex;
	  lex->type=0;
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	} purge_options
	{}
	;

purge_options:
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	master_or_binary LOGS_SYM purge_option
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	;
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purge_option:
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        TO_SYM TEXT_STRING_sys
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        {
	   Lex->sql_command = SQLCOM_PURGE;
	   Lex->to_log = $2.str;
        }
	| BEFORE_SYM expr
	{
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	  LEX *lex= Lex;
	  lex->value_list.empty();
	  lex->value_list.push_front($2);
	  lex->sql_command= SQLCOM_PURGE_BEFORE;
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	}
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	;
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/* kill threads */

kill:
6353
	KILL_SYM kill_option expr
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	{
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	  LEX *lex=Lex;
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	  lex->value_list.empty();
	  lex->value_list.push_front($3);
          lex->sql_command= SQLCOM_KILL;
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	};
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kill_option:
	/* empty */	 { Lex->type= 0; }
	| CONNECTION_SYM { Lex->type= 0; }
	| QUERY_SYM      { Lex->type= ONLY_KILL_QUERY; };

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/* change database */

use:	USE_SYM ident
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	{
	  LEX *lex=Lex;
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	  lex->sql_command=SQLCOM_CHANGE_DB;
	  lex->select_lex.db= $2.str;
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	};
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/* import, export of files */

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load:	LOAD DATA_SYM load_data_lock opt_local INFILE TEXT_STRING_sys
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	{
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	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_LOAD;
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	  lex->lock_option= $3;
	  lex->local_file=  $4;
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	  lex->duplicates= DUP_ERROR;
	  lex->ignore= 0;
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	  if (!(lex->exchange= new sql_exchange($6.str,0)))
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	    YYABORT;
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	  lex->field_list.empty();
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	}
	opt_duplicate INTO TABLE_SYM table_ident opt_field_term opt_line_term
	opt_ignore_lines opt_field_spec
	{
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	  if (!Select->add_table_to_list(YYTHD, $11, NULL, TL_OPTION_UPDATING))
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	    YYABORT;
	}
        |
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	LOAD TABLE_SYM table_ident FROM MASTER_SYM
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        {
	  Lex->sql_command = SQLCOM_LOAD_MASTER_TABLE;
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	  if (!Select->add_table_to_list(YYTHD, $3, NULL, TL_OPTION_UPDATING))
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	    YYABORT;
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        }
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        |
	LOAD DATA_SYM FROM MASTER_SYM
        {
	  Lex->sql_command = SQLCOM_LOAD_MASTER_DATA;
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        };
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opt_local:
	/* empty */	{ $$=0;}
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	| LOCAL_SYM	{ $$=1;};
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load_data_lock:
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	/* empty */	{ $$= YYTHD->update_lock_default; }
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	| CONCURRENT	{ $$= TL_WRITE_CONCURRENT_INSERT ; }
	| LOW_PRIORITY	{ $$= TL_WRITE_LOW_PRIORITY; };
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opt_duplicate:
	/* empty */	{ Lex->duplicates=DUP_ERROR; }
	| REPLACE	{ Lex->duplicates=DUP_REPLACE; }
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	| IGNORE_SYM	{ Lex->ignore= 1; };
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opt_field_term:
	/* empty */
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	| COLUMNS field_term_list;
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field_term_list:
	field_term_list field_term
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	| field_term;
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field_term:
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	TERMINATED BY text_string 
          {
6435
            DBUG_ASSERT(Lex->exchange != 0);
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            Lex->exchange->field_term= $3;
          }
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	| OPTIONALLY ENCLOSED BY text_string
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	  {
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            LEX *lex= Lex;
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            DBUG_ASSERT(lex->exchange != 0);
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            lex->exchange->enclosed= $4;
            lex->exchange->opt_enclosed= 1;
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	  }
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        | ENCLOSED BY text_string
6446
          {
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            DBUG_ASSERT(Lex->exchange != 0);
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            Lex->exchange->enclosed= $3;
          }
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        | ESCAPED BY text_string
6451
          {
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            DBUG_ASSERT(Lex->exchange != 0);
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            Lex->exchange->escaped= $3;
          };
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opt_line_term:
	/* empty */
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	| LINES line_term_list;
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line_term_list:
	line_term_list line_term
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	| line_term;
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line_term:
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        TERMINATED BY text_string
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          {
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            DBUG_ASSERT(Lex->exchange != 0);
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            Lex->exchange->line_term= $3;
          }
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        | STARTING BY text_string
6471
          {
6472
            DBUG_ASSERT(Lex->exchange != 0);
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            Lex->exchange->line_start= $3;
          };
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opt_ignore_lines:
	/* empty */
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        | IGNORE_SYM NUM LINES
          {
6480
            DBUG_ASSERT(Lex->exchange != 0);
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            Lex->exchange->skip_lines= atol($2.str);
          };
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/* Common definitions */

text_literal:
6487
	TEXT_STRING_literal
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	{
	  THD *thd= YYTHD;
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	  $$ = new Item_string($1.str,$1.length,thd->variables.collation_connection);
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	}
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	| NCHAR_STRING
6493
	{ $$=  new Item_string($1.str,$1.length,national_charset_info); }
6494
	| UNDERSCORE_CHARSET TEXT_STRING
6495
	  { $$ = new Item_string($2.str,$2.length,Lex->charset); }
6496
	| text_literal TEXT_STRING_literal
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	  { ((Item_string*) $1)->append($2.str,$2.length); }
	;
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text_string:
6501
	TEXT_STRING_literal
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	{ $$=  new (YYTHD->mem_root) String($1.str,$1.length,YYTHD->variables.collation_connection); }
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	| HEX_NUM
	  {
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	    Item *tmp= new Item_hex_string($1.str, $1.length);
6506
	    /*
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	      it is OK only emulate fix_fields, because we need only
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              value of constant
	    */
	    $$= tmp ?
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	      tmp->quick_fix_field(), tmp->val_str((String*) 0) :
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	      (String*) 0;
6513
	  }
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        | BIN_NUM
          {
	    Item *tmp= new Item_bin_string($1.str, $1.length);
	    /*
	      it is OK only emulate fix_fields, because we need only
              value of constant
	    */
	    $$= tmp ? tmp->quick_fix_field(), tmp->val_str((String*) 0) :
		      (String*) 0;
          }
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	;

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param_marker:
6527
        '?'
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        {
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          THD *thd=YYTHD;
	  LEX *lex= thd->lex;
          if (thd->command == COM_PREPARE)
6532
          {
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            Item_param *item= new Item_param((uint) (lex->tok_start -
                                                     (uchar *) thd->query));
            if (!($$= item) || lex->param_list.push_back(item))
            {
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	      my_message(ER_OUT_OF_RESOURCES, ER(ER_OUT_OF_RESOURCES), MYF(0));
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	      YYABORT;
            }
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          }
6541
          else
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          {
6543
            yyerror(ER(ER_SYNTAX_ERROR));
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            YYABORT;
          }
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        }
	;

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signed_literal:
	literal		{ $$ = $1; }
	| '+' NUM_literal { $$ = $2; }
6552 6553
	| '-' NUM_literal
	  {
6554
	    $2->max_length++;
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	    $$= $2->neg();
6556
	  }
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	;


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literal:
	text_literal	{ $$ =	$1; }
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	| NUM_literal	{ $$ = $1; }
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	| NULL_SYM	{ $$ =	new Item_null();
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			  Lex->next_state=MY_LEX_OPERATOR_OR_IDENT;}
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	| HEX_NUM	{ $$ =	new Item_hex_string($1.str, $1.length);}
	| BIN_NUM	{ $$= new Item_bin_string($1.str, $1.length); }
6567
	| UNDERSCORE_CHARSET HEX_NUM
6568
	  {
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	    Item *tmp= new Item_hex_string($2.str, $2.length);
6570
	    /*
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	      it is OK only emulate fix_fieds, because we need only
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              value of constant
	    */
	    String *str= tmp ?
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	      tmp->quick_fix_field(), tmp->val_str((String*) 0) :
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	      (String*) 0;
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	    $$= new Item_string(str ? str->ptr() : "",
				str ? str->length() : 0,
				Lex->charset);
6580
	  }
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	| UNDERSCORE_CHARSET BIN_NUM
          {
	    Item *tmp= new Item_bin_string($2.str, $2.length);
	    /*
	      it is OK only emulate fix_fieds, because we need only
              value of constant
	    */
	    String *str= tmp ?
	      tmp->quick_fix_field(), tmp->val_str((String*) 0) :
	      (String*) 0;
	    $$= new Item_string(str ? str->ptr() : "",
				str ? str->length() : 0,
				Lex->charset);
          }
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	| DATE_SYM text_literal { $$ = $2; }
	| TIME_SYM text_literal { $$ = $2; }
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	| TIMESTAMP text_literal { $$ = $2; };
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6599
NUM_literal:
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	NUM		{ int error; $$ = new Item_int($1.str, (longlong) my_strtoll10($1.str, NULL, &error), $1.length); }
	| LONG_NUM	{ int error; $$ = new Item_int($1.str, (longlong) my_strtoll10($1.str, NULL, &error), $1.length); }
6602
	| ULONGLONG_NUM	{ $$ =	new Item_uint($1.str, $1.length); }
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        | DECIMAL_NUM
6604
	{
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           $$= new Item_decimal($1.str, $1.length, YYTHD->charset());
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	   if (YYTHD->net.report_error)
	   {
	     YYABORT;
	   }
	}
	| FLOAT_NUM
	{
	   $$ =	new Item_float($1.str, $1.length);
	   if (YYTHD->net.report_error)
	   {
	     YYABORT;
	   }
	}
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	;
	
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/**********************************************************************
** Createing different items.
**********************************************************************/

insert_ident:
6626
	simple_ident_nospvar { $$=$1; }
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	| table_wild	 { $$=$1; };
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table_wild:
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	ident '.' '*'
6631 6632
	{
	  $$ = new Item_field(NullS,$1.str,"*");
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	  Lex->current_select->with_wild++;
6634
	}
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	| ident '.' ident '.' '*'
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	{
	  $$ = new Item_field((YYTHD->client_capabilities &
   			     CLIENT_NO_SCHEMA ? NullS : $1.str),
			     $3.str,"*");
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	  Lex->current_select->with_wild++;
6641 6642
	}
	;
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order_ident:
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	expr { $$=$1; };
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simple_ident:
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	ident
	{
	  sp_pvar_t *spv;
	  LEX *lex = Lex;
          sp_pcontext *spc = lex->spcont;

	  if (spc && (spv = spc->find_pvar(&$1)))
	  { /* We're compiling a stored procedure and found a variable */
	    $$ = (Item*) new Item_splocal($1, spv->offset);
            lex->variables_used= 1;
	    lex->safe_to_cache_query=0;
	  }
	  else
	  {
	    SELECT_LEX *sel=Select;
	    $$= (sel->parsing_place != IN_HAVING ||
	         sel->get_in_sum_expr() > 0) ?
                 (Item*) new Item_field(NullS,NullS,$1.str) :
	         (Item*) new Item_ref(NullS,NullS,$1.str);
	  }
        }
        | simple_ident_q { $$= $1; }
	;

simple_ident_nospvar:
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	ident
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	{
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	  SELECT_LEX *sel=Select;
6676
	  $$= (sel->parsing_place != IN_HAVING ||
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	       sel->get_in_sum_expr() > 0) ?
              (Item*) new Item_field(NullS,NullS,$1.str) :
6679
	      (Item*) new Item_ref(NullS,NullS,$1.str);
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	}
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	| simple_ident_q { $$= $1; }
	;	

simple_ident_q:
	ident '.' ident
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	{
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	  THD *thd= YYTHD;
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	  LEX *lex= thd->lex;
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          /*
            FIXME This will work ok in simple_ident_nospvar case because
            we can't meet simple_ident_nospvar in trigger now. But it
            should be changed in future.
          */
          if (lex->sphead && lex->sphead->m_type == TYPE_ENUM_TRIGGER &&
              (!my_strcasecmp(system_charset_info, $1.str, "NEW") || 
               !my_strcasecmp(system_charset_info, $1.str, "OLD")))
          {
6699
            Item_trigger_field *trg_fld;
6700 6701 6702 6703 6704
            bool new_row= ($1.str[0]=='N' || $1.str[0]=='n');
            
            if (lex->trg_chistics.event == TRG_EVENT_INSERT &&
                !new_row)
            {
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              my_error(ER_TRG_NO_SUCH_ROW_IN_TRG, MYF(0), "OLD", "on INSERT");
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              YYABORT;
            }
            
            if (lex->trg_chistics.event == TRG_EVENT_DELETE &&
                new_row)
            {
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              my_error(ER_TRG_NO_SUCH_ROW_IN_TRG, MYF(0), "NEW", "on DELETE");
6713 6714 6715
              YYABORT;
            }
            
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            if (!(trg_fld= new Item_trigger_field(new_row ?
                                                  Item_trigger_field::NEW_ROW:
                                                  Item_trigger_field::OLD_ROW,
                                                  $3.str)))
6720
              YYABORT;
6721 6722 6723 6724 6725 6726 6727
          
            /*
              Let us add this item to list of all Item_trigger_field objects
              in trigger.
            */
            lex->trg_table_fields.link_in_list((byte *)trg_fld,
              (byte**)&trg_fld->next_trg_field);
6728 6729 6730 6731 6732 6733 6734 6735
            
            $$= (Item *)trg_fld;
          }
          else
          {
	    SELECT_LEX *sel= lex->current_select;
	    if (sel->no_table_names_allowed)
	    {
6736 6737
	      my_error(ER_TABLENAME_NOT_ALLOWED_HERE,
                       MYF(0), $1.str, thd->where);
6738 6739 6740 6741 6742 6743 6744
	    }
	    $$= (sel->parsing_place != IN_HAVING ||
	         sel->get_in_sum_expr() > 0) ?
	        (Item*) new Item_field(NullS,$1.str,$3.str) :
	        (Item*) new Item_ref(NullS,$1.str,$3.str);
          }
        }
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	| '.' ident '.' ident
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	{
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	  THD *thd= YYTHD;
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	  LEX *lex= thd->lex;
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	  SELECT_LEX *sel= lex->current_select;
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	  if (sel->no_table_names_allowed)
	  {
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	    my_error(ER_TABLENAME_NOT_ALLOWED_HERE,
                     MYF(0), $2.str, thd->where);
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	  }
6755
	  $$= (sel->parsing_place != IN_HAVING ||
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	       sel->get_in_sum_expr() > 0) ?
	      (Item*) new Item_field(NullS,$2.str,$4.str) :
6758
              (Item*) new Item_ref(NullS, $2.str, $4.str);
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	}
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	| ident '.' ident '.' ident
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	{
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	  THD *thd= YYTHD;
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	  LEX *lex= thd->lex;
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	  SELECT_LEX *sel= lex->current_select;
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	  if (sel->no_table_names_allowed)
	  {
6767 6768
	    my_error(ER_TABLENAME_NOT_ALLOWED_HERE,
                     MYF(0), $3.str, thd->where);
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	  }
6770
	  $$= (sel->parsing_place != IN_HAVING ||
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	       sel->get_in_sum_expr() > 0) ?
	      (Item*) new Item_field((YYTHD->client_capabilities &
				      CLIENT_NO_SCHEMA ? NullS : $1.str),
				     $3.str, $5.str) :
6775 6776
	      (Item*) new Item_ref((YYTHD->client_capabilities &
				    CLIENT_NO_SCHEMA ? NullS : $1.str),
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                                   $3.str, $5.str);
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	};
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field_ident:
	ident			{ $$=$1;}
6783
	| ident '.' ident	{ $$=$3;}	/* Skip schema name in create*/
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	| '.' ident		{ $$=$2;}	/* For Delphi */;
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table_ident:
	ident			{ $$=new Table_ident($1); }
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	| ident '.' ident	{ $$=new Table_ident(YYTHD, $1,$3,0);}
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	| '.' ident		{ $$=new Table_ident($2);} /* For Delphi */
        ;

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table_ident_nodb:
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	ident			{ LEX_STRING db={(char*) any_db,3}; $$=new Table_ident(YYTHD, db,$1,0); }
6794
        ;
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IDENT_sys:
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	IDENT { $$= $1; }
	| IDENT_QUOTED
	  {
	    THD *thd= YYTHD;
	    if (thd->charset_is_system_charset)
6802 6803 6804 6805 6806 6807 6808
            {
              CHARSET_INFO *cs= system_charset_info;
              uint wlen= cs->cset->well_formed_len(cs, $1.str,
                                                   $1.str+$1.length,
                                                   $1.length);
              if (wlen < $1.length)
              {
6809 6810
                my_error(ER_INVALID_CHARACTER_STRING, MYF(0),
                         cs->csname, $1.str + wlen);
6811 6812
                YYABORT;
              }
6813
	      $$= $1;
6814
            }
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	    else
	      thd->convert_string(&$$, system_charset_info,
				  $1.str, $1.length, thd->charset());
	  }
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	;

TEXT_STRING_sys:
	TEXT_STRING
	{
	  THD *thd= YYTHD;
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	  if (thd->charset_is_system_charset)
	    $$= $1;
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	  else
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	    thd->convert_string(&$$, system_charset_info,
				$1.str, $1.length, thd->charset());
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	}
	;

6833
TEXT_STRING_literal:
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	TEXT_STRING
	{
	  THD *thd= YYTHD;
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	  if (thd->charset_is_collation_connection)
	    $$= $1;
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	  else
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	    thd->convert_string(&$$, thd->variables.collation_connection,
				$1.str, $1.length, thd->charset());
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	}
	;


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ident:
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	IDENT_sys	    { $$=$1; }
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	| keyword
	{
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	  THD *thd= YYTHD;
	  $$.str=    thd->strmake($1.str, $1.length);
	  $$.length= $1.length;
6853 6854
	}
	;
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ident_or_text:
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	ident 			{ $$=$1;}
	| TEXT_STRING_sys	{ $$=$1;}
	| LEX_HOSTNAME		{ $$=$1;};
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user:
	ident_or_text
	{
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	  THD *thd= YYTHD;
	  if (!($$=(LEX_USER*) thd->alloc(sizeof(st_lex_user))))
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	    YYABORT;
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	  $$->user = $1;
	  $$->host.str= (char *) "%";
	  $$->host.length= 1;
	}
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	| ident_or_text '@' ident_or_text
	  {
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	    THD *thd= YYTHD;
	    if (!($$=(LEX_USER*) thd->alloc(sizeof(st_lex_user))))
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	      YYABORT;
	    $$->user = $1; $$->host=$3;
6877
	  }
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	| CURRENT_USER optional_braces
6879 6880 6881 6882 6883 6884 6885 6886 6887 6888 6889 6890 6891 6892 6893 6894 6895
	{
          THD *thd= YYTHD;
          if (!($$=(LEX_USER*) thd->alloc(sizeof(st_lex_user))))
            YYABORT;
          $$->user.str= thd->priv_user;
          $$->user.length= strlen(thd->priv_user);
          if (*thd->priv_host != 0)
          {
            $$->host.str= thd->priv_host;
            $$->host.length= strlen(thd->priv_host);
          }
          else
          {
            $$->host.str= (char *) "%";
            $$->host.length= 1;
          }
	};
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/* Keyword that we allow for identifiers */

keyword:
	ACTION			{}
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	| ADDDATE_SYM		{}
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	| AFTER_SYM		{}
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	| AGAINST		{}
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	| AGGREGATE_SYM		{}
6905
	| ALGORITHM_SYM		{}
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	| ANY_SYM		{}
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	| ASCII_SYM		{}
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	| AUTO_INC		{}
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	| AVG_ROW_LENGTH	{}
	| AVG_SYM		{}
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	| BACKUP_SYM		{}
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	| BEGIN_SYM		{}
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	| BERKELEY_DB_SYM	{}
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	| BINLOG_SYM		{}
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	| BIT_SYM		{}
	| BOOL_SYM		{}
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	| BOOLEAN_SYM		{}
6918
	| BYTE_SYM		{}
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	| BTREE_SYM		{}
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	| CACHE_SYM		{}
6921
	| CASCADED              {}
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	| CHAIN_SYM		{}
6923
	| CHANGED		{}
6924
	| CHARSET		{}
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	| CHECKSUM_SYM		{}
6926
	| CIPHER_SYM		{}
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	| CLIENT_SYM		{}
6928
	| CLOSE_SYM		{}
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	| COLLATION_SYM		{}
6930
        | COLUMNS               {}
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	| COMMENT_SYM		{}
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	| COMMITTED_SYM		{}
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	| COMMIT_SYM		{}
6934
	| COMPACT_SYM		{}
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	| COMPRESSED_SYM	{}
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	| CONCURRENT		{}
6937
	| CONSISTENT_SYM	{}
6938
	| CONTAINS_SYM          {}
6939
	| CUBE_SYM		{}
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	| DATA_SYM		{}
	| DATETIME		{}
	| DATE_SYM		{}
	| DAY_SYM		{}
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        | DEALLOCATE_SYM        {}
6945
	| DEFINER_SYM		{}
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	| DELAY_KEY_WRITE_SYM	{}
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	| DES_KEY_FILE		{}
	| DIRECTORY_SYM		{}
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	| DISCARD		{}
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	| DO_SYM		{}
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	| DUMPFILE		{}
	| DUPLICATE_SYM		{}
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	| DYNAMIC_SYM		{}
	| END			{}
	| ENUM			{}
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	| ENGINE_SYM		{}
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	| ENGINES_SYM		{}
6958
	| ERRORS		{}
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	| ESCAPE_SYM		{}
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	| EVENTS_SYM		{}
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	| EXECUTE_SYM		{}
6962
        | EXPANSION_SYM         {}
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	| EXTENDED_SYM		{}
6964
	| FAST_SYM		{}
6965
	| FOUND_SYM		{}
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	| DISABLE_SYM		{}
	| ENABLE_SYM		{}
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	| FULL			{}
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	| FILE_SYM		{}
	| FIRST_SYM		{}
	| FIXED_SYM		{}
	| FLUSH_SYM		{}
6973
	| FRAC_SECOND_SYM	{}
6974
	| GEOMETRY_SYM		{}
6975
	| GEOMETRYCOLLECTION	{}
6976
	| GET_FORMAT		{}
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	| GRANTS		{}
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	| GLOBAL_SYM		{}
6979
	| HANDLER_SYM		{}
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	| HASH_SYM		{}
6981
	| HELP_SYM		{}
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	| HOSTS_SYM		{}
	| HOUR_SYM		{}
	| IDENTIFIED_SYM	{}
6985
	| INVOKER_SYM		{}
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	| IMPORT		{}
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	| INDEXES		{}
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	| ISOLATION		{}
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	| ISSUER_SYM		{}
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	| INNOBASE_SYM		{}
6991
	| INSERT_METHOD		{}
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6992
	| RELAY_THREAD		{}
6993 6994
	| LABEL_SYM             {}
	| LANGUAGE_SYM          {}
6995
	| LAST_SYM		{}
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	| LEAVES                {}
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	| LEVEL_SYM		{}
6998
	| LINESTRING		{}
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	| LOCAL_SYM		{}
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	| LOCKS_SYM		{}
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	| LOGS_SYM		{}
	| MAX_ROWS		{}
	| MASTER_SYM		{}
	| MASTER_HOST_SYM	{}
	| MASTER_PORT_SYM	{}
	| MASTER_LOG_FILE_SYM	{}
	| MASTER_LOG_POS_SYM	{}
	| MASTER_USER_SYM	{}
	| MASTER_PASSWORD_SYM	{}
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	| MASTER_SERVER_ID_SYM  {}
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	| MASTER_CONNECT_RETRY_SYM	{}
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	| MASTER_SSL_SYM	{}
	| MASTER_SSL_CA_SYM	{}
	| MASTER_SSL_CAPATH_SYM	{}
	| MASTER_SSL_CERT_SYM	{}
	| MASTER_SSL_CIPHER_SYM	{}
	| MASTER_SSL_KEY_SYM	{}
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	| MAX_CONNECTIONS_PER_HOUR	 {}
	| MAX_QUERIES_PER_HOUR	{}
	| MAX_UPDATES_PER_HOUR	{}
7021
	| MAX_USER_CONNECTIONS_SYM {}
7022
	| MEDIUM_SYM		{}
7023
	| MERGE_SYM		{}
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	| MICROSECOND_SYM	{}
7025
        | MIGRATE_SYM           {}
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	| MINUTE_SYM		{}
	| MIN_ROWS		{}
	| MODIFY_SYM		{}
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	| MODE_SYM		{}
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	| MONTH_SYM		{}
7031 7032 7033
	| MULTILINESTRING	{}
	| MULTIPOINT		{}
	| MULTIPOLYGON		{}
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  | MUTEX_SYM   {}
7035
	| NAME_SYM              {}
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	| NAMES_SYM		{}
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	| NATIONAL_SYM		{}
	| NCHAR_SYM		{}
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	| NDBCLUSTER_SYM	{}
7040
	| NEXT_SYM		{}
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	| NEW_SYM		{}
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	| NO_SYM		{}
7043
	| NONE_SYM		{}
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	| NVARCHAR_SYM		{}
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	| OFFSET_SYM		{}
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	| OLD_PASSWORD		{}
7047
	| ONE_SHOT_SYM		{}
7048
        | ONE_SYM               {}
7049
	| OPEN_SYM		{}
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	| PACK_KEYS_SYM		{}
7051
	| PARTIAL		{}
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	| PASSWORD		{}
7053
        | PHASE_SYM             {}
7054
	| POINT_SYM		{}
7055
	| POLYGON		{}
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        | PREPARE_SYM           {}
7057
	| PREV_SYM		{}
7058
        | PRIVILEGES            {}
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	| PROCESS		{}
	| PROCESSLIST_SYM	{}
7061
	| QUARTER_SYM		{}
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	| QUERY_SYM		{}
7063
	| QUICK			{}
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	| RAID_0_SYM		{}
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	| RAID_CHUNKS		{}
	| RAID_CHUNKSIZE	{}
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	| RAID_STRIPED_SYM	{}
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	| RAID_TYPE		{}
7069
        | RECOVER_SYM           {}
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        | REDUNDANT_SYM         {}
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	| RELAY_LOG_FILE_SYM	{}
	| RELAY_LOG_POS_SYM	{}
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	| RELOAD		{}
	| REPAIR		{}
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	| REPEATABLE_SYM	{}
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	| REPLICATION		{}
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	| RESET_SYM		{}
7078
	| RESOURCES		{}
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	| RESTORE_SYM		{}
7080
        | RESUME_SYM            {}
7081
	| RETURNS_SYM           {}
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	| ROLLBACK_SYM		{}
7083
	| ROLLUP_SYM		{}
7084
	| ROUTINE_SYM		{}
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	| ROWS_SYM		{}
	| ROW_FORMAT_SYM	{}
	| ROW_SYM		{}
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	| RTREE_SYM		{}
7089
	| SAVEPOINT_SYM		{}
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	| SECOND_SYM		{}
7091
	| SECURITY_SYM		{}
7092
	| SERIAL_SYM		{}
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	| SERIALIZABLE_SYM	{}
	| SESSION_SYM		{}
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7095
	| SIGNED_SYM		{}
7096
	| SIMPLE_SYM		{}
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	| SHARE_SYM		{}
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	| SHUTDOWN		{}
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7099
	| SLAVE			{}
7100
	| SNAPSHOT_SYM		{}
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	| SOUNDS_SYM		{}
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7102
	| SQL_CACHE_SYM		{}
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7103
	| SQL_BUFFER_RESULT	{}
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7104
	| SQL_NO_CACHE_SYM	{}
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	| SQL_THREAD		{}
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	| START_SYM		{}
	| STATUS_SYM		{}
	| STOP_SYM		{}
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7109
	| STORAGE_SYM		{}
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7110
	| STRING_SYM		{}
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7111
	| SUBDATE_SYM		{}
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7112
	| SUBJECT_SYM		{}
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7113
	| SUPER_SYM		{}
7114
        | SUSPEND_SYM           {}
7115
        | TABLES                {}
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7116
	| TABLESPACE		{}
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7117
	| TEMPORARY		{}
7118
	| TEMPTABLE_SYM		{}
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7119
	| TEXT_SYM		{}
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7120
	| TRANSACTION_SYM	{}
7121
	| TRUNCATE_SYM		{}
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7122
	| TIMESTAMP		{}
7123 7124
	| TIMESTAMP_ADD		{}
	| TIMESTAMP_DIFF	{}
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	| TIME_SYM		{}
	| TYPE_SYM		{}
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	| TYPES_SYM		{}
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        | UDF_RETURNS_SYM       {}
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	| FUNCTION_SYM		{}
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	| UNCOMMITTED_SYM	{}
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	| UNDEFINED_SYM		{}
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	| UNICODE_SYM		{}
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	| UNKNOWN_SYM		{}
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	| UNTIL_SYM		{}
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	| USER			{}
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	| USE_FRM		{}
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	| VARIABLES		{}
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	| VIEW_SYM		{}
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	| VALUE_SYM		{}
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	| WARNINGS		{}
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	| WEEK_SYM		{}
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	| WORK_SYM		{}
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	| X509_SYM		{}
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        | XA_SYM                {}
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	| YEAR_SYM		{}
	;
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/* Option functions */

set:
	SET opt_option
	{
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	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_SET_OPTION;
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	  mysql_init_select(lex);
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	  lex->option_type=OPT_SESSION;
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	  lex->var_list.empty();
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          lex->one_shot_set= 0;
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	}
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	option_value_list
	{}
	;
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opt_option:
	/* empty */ {}
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	| OPTION {};
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option_value_list:
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	option_type option_value
	| option_value_list ',' option_type option_value;

option_type:
	/* empty */	{}
	| GLOBAL_SYM	{ Lex->option_type= OPT_GLOBAL; }
	| LOCAL_SYM	{ Lex->option_type= OPT_SESSION; }
	| SESSION_SYM	{ Lex->option_type= OPT_SESSION; }
7177
	| ONE_SHOT_SYM	{ Lex->option_type= OPT_SESSION; Lex->one_shot_set= 1; }
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	;

opt_var_type:
	/* empty */	{ $$=OPT_SESSION; }
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	| GLOBAL_SYM	{ $$=OPT_GLOBAL; }
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	| LOCAL_SYM	{ $$=OPT_SESSION; }
	| SESSION_SYM	{ $$=OPT_SESSION; }
	;

opt_var_ident_type:
	/* empty */		{ $$=OPT_DEFAULT; }
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	| GLOBAL_SYM '.'	{ $$=OPT_GLOBAL; }
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	| LOCAL_SYM '.'		{ $$=OPT_SESSION; }
	| SESSION_SYM '.'	{ $$=OPT_SESSION; }
	;
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option_value:
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	  '@' ident_or_text equal expr
	  {
            LEX *lex= Lex;

            if (lex->sphead && lex->sphead->m_type != TYPE_ENUM_PROCEDURE)
            {
              /*
                We have to use special instruction in functions and triggers
                because sp_instr_stmt will close all tables and thus ruin
                execution of statement invoking function or trigger.

                We also do not want to allow expression with subselects in
                this case.
              */
              if (lex->query_tables)
              {
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                my_message(ER_SP_SUBSELECT_NYI, ER(ER_SP_SUBSELECT_NYI),
                           MYF(0));
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                YYABORT;
              }
              sp_instr_set_user_var *i= 
                new sp_instr_set_user_var(lex->sphead->instructions(),
                                          lex->spcont, $2, $4);
	      lex->sphead->add_instr(i);
            }
            else
              lex->var_list.push_back(new set_var_user(new Item_func_set_user_var($2,$4)));
	  }
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	| internal_variable_name equal set_expr_or_default
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	  {
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	    LEX *lex=Lex;
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            if ($1.var == &trg_new_row_fake_var)
            {
              /* We are in trigger and assigning value to field of new row */
              Item *it;
              sp_instr_set_trigger_field *i;
              if (lex->query_tables)
              {
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                my_message(ER_SP_SUBSELECT_NYI, ER(ER_SP_SUBSELECT_NYI),
                           MYF(0));
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                YYABORT;
              }
              if ($3)
                it= $3;
              else
              {
                /* QQ: Shouldn't this be field's default value ? */
                it= new Item_null();
              }
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              if (!(i= new sp_instr_set_trigger_field(
                             lex->sphead->instructions(), lex->spcont,
                             $1.base_name, it)))
7249
                YYABORT;
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              /*
                Let us add this item to list of all Item_trigger_field
                objects in trigger.
              */
              lex->trg_table_fields.link_in_list((byte *)&i->trigger_field,
                     (byte **)&i->trigger_field.next_trg_field);

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              lex->sphead->add_instr(i);
            }
            else if ($1.var)
	    { /* System variable */
	      lex->var_list.push_back(new set_var(lex->option_type, $1.var,
						  &$1.base_name, $3));
	    }
            else
	    {
	      /* An SP local variable */
	      sp_pcontext *ctx= lex->spcont;
	      sp_pvar_t *spv;
              sp_instr_set *i;
	      Item *it;

	      spv= ctx->find_pvar(&$1.base_name);

	      if ($3)
	        it= $3;
	      else if (spv->dflt)
	        it= spv->dflt;
	      else
	        it= new Item_null();
              i= new sp_instr_set(lex->sphead->instructions(), ctx,
	                          spv->offset, it, spv->type);
	      i->tables= lex->query_tables;
	      lex->query_tables= 0;
	      lex->sphead->add_instr(i);
	      spv->isset= TRUE;
	    }
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	  }
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	| '@' '@' opt_var_ident_type internal_variable_name equal set_expr_or_default
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	  {
	    LEX *lex=Lex;
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	    lex->var_list.push_back(new set_var((enum_var_type) $3, $4.var,
						&$4.base_name, $6));
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	  }
	| TRANSACTION_SYM ISOLATION LEVEL_SYM isolation_types
	  {
	    LEX *lex=Lex;
	    lex->var_list.push_back(new set_var(lex->option_type,
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						find_sys_var("tx_isolation"),
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						&null_lex_str,
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						new Item_int((int32) $4)));
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	  }
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	| charset old_or_new_charset_name_or_default
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	{
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	  THD *thd= YYTHD;
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	  LEX *lex= Lex;
7307
	  $2= $2 ? $2: global_system_variables.character_set_client;
7308
	  lex->var_list.push_back(new set_var_collation_client($2,thd->variables.collation_database,$2));
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	}
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	| NAMES_SYM charset_name_or_default opt_collate
7311
	{
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	  LEX *lex= Lex;
7313
	  $2= $2 ? $2 : global_system_variables.character_set_client;
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	  $3= $3 ? $3 : $2;
	  if (!my_charset_same($2,$3))
7316
	  {
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	    my_error(ER_COLLATION_CHARSET_MISMATCH, MYF(0),
                     $3->name, $2->csname);
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	    YYABORT;
7320
	  }
7321
	  lex->var_list.push_back(new set_var_collation_client($3,$3,$3));
7322
	}
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	| PASSWORD equal text_or_password
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	  {
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	    THD *thd=YYTHD;
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	    LEX_USER *user;
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	    if (!(user=(LEX_USER*) thd->alloc(sizeof(LEX_USER))))
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	      YYABORT;
7329
	    user->host=null_lex_str;
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	    user->user.str=thd->priv_user;
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	    thd->lex->var_list.push_back(new set_var_password(user, $3));
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	  }
	| PASSWORD FOR_SYM user equal text_or_password
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	  {
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	    Lex->var_list.push_back(new set_var_password($3,$5));
	  }
7337
	;
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internal_variable_name:
	ident
	{
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	  LEX *lex= Lex;
          sp_pcontext *spc= lex->spcont;
	  sp_pvar_t *spv;

	  /* We have to lookup here since local vars can shadow sysvars */
	  if (!spc || !(spv = spc->find_pvar(&$1)))
	  {
            /* Not an SP local variable */
	    sys_var *tmp=find_sys_var($1.str, $1.length);
	    if (!tmp)
	      YYABORT;
	    $$.var= tmp;
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	    $$.base_name= null_lex_str;
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            /*
              If this is time_zone variable we should open time zone
              describing tables 
            */
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            if (tmp == &sys_time_zone &&
                lex->add_time_zone_tables_to_query_tables(YYTHD))
              YYABORT;
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	  }
	  else
	  {
            /* An SP local variable */
	    $$.var= NULL;
	    $$.base_name= $1;
	  }
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	}
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	| ident '.' ident
	  {
7372
            LEX *lex= Lex;
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            if (check_reserved_words(&$1))
            {
7375
	      yyerror(ER(ER_SYNTAX_ERROR));
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              YYABORT;
            }
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            if (lex->sphead && lex->sphead->m_type == TYPE_ENUM_TRIGGER &&
                (!my_strcasecmp(system_charset_info, $1.str, "NEW") || 
                 !my_strcasecmp(system_charset_info, $1.str, "OLD")))
            {
              if ($1.str[0]=='O' || $1.str[0]=='o')
              {
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                my_error(ER_TRG_CANT_CHANGE_ROW, MYF(0), "OLD", "");
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                YYABORT;
              }
              if (lex->trg_chistics.event == TRG_EVENT_DELETE)
              {
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                my_error(ER_TRG_NO_SUCH_ROW_IN_TRG, MYF(0),
                         "NEW", "on DELETE");
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                YYABORT;
              }
              if (lex->trg_chistics.action_time == TRG_ACTION_AFTER)
              {
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                my_error(ER_TRG_CANT_CHANGE_ROW, MYF(0), "NEW", "after ");
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                YYABORT;
              }
              /* This special combination will denote field of NEW row */
              $$.var= &trg_new_row_fake_var;
              $$.base_name= $3;
            }
            else
            {
              sys_var *tmp=find_sys_var($3.str, $3.length);
              if (!tmp)
                YYABORT;
              if (!tmp->is_struct())
7408
                my_error(ER_VARIABLE_IS_NOT_STRUCT, MYF(0), $3.str);
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              $$.var= tmp;
              $$.base_name= $1;
            }
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	  }
	| DEFAULT '.' ident
	  {
	    sys_var *tmp=find_sys_var($3.str, $3.length);
	    if (!tmp)
	      YYABORT;
	    if (!tmp->is_struct())
7419
	      my_error(ER_VARIABLE_IS_NOT_STRUCT, MYF(0), $3.str);
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	    $$.var= tmp;
	    $$.base_name.str=    (char*) "default";
	    $$.base_name.length= 7;
7423
	  }
7424
        ;
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isolation_types:
	READ_SYM UNCOMMITTED_SYM	{ $$= ISO_READ_UNCOMMITTED; }
	| READ_SYM COMMITTED_SYM	{ $$= ISO_READ_COMMITTED; }
	| REPEATABLE_SYM READ_SYM	{ $$= ISO_REPEATABLE_READ; }
	| SERIALIZABLE_SYM		{ $$= ISO_SERIALIZABLE; }
	;
7432

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text_or_password:
	TEXT_STRING { $$=$1.str;}
	| PASSWORD '(' TEXT_STRING ')'
	  {
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	    $$= $3.length ? YYTHD->variables.old_passwords ?
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	        Item_func_old_password::alloc(YYTHD, $3.str) :
	        Item_func_password::alloc(YYTHD, $3.str) :
	      $3.str;
	  }
	| OLD_PASSWORD '(' TEXT_STRING ')'
	  {
	    $$= $3.length ? Item_func_old_password::alloc(YYTHD, $3.str) :
	      $3.str;
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	  }
          ;
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set_expr_or_default:
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	expr      { $$=$1; }
	| DEFAULT { $$=0; }
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	| ON	  { $$=new Item_string("ON",  2, system_charset_info); }
	| ALL	  { $$=new Item_string("ALL", 3, system_charset_info); }
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	| BINARY  { $$=new Item_string("binary", 6, system_charset_info); }
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	;
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/* Lock function */

lock:
	LOCK_SYM table_or_tables
	{
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	  LEX *lex= Lex;

	  if (lex->sphead)
	  {
	    my_message(ER_SP_BADSTATEMENT, ER(ER_SP_BADSTATEMENT), MYF(0));
	    YYABORT;
	  }
	  lex->sql_command= SQLCOM_LOCK_TABLES;
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	}
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	table_lock_list
	{}
7475
	;
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table_or_tables:
	TABLE_SYM
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	| TABLES;
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table_lock_list:
	table_lock
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	| table_lock_list ',' table_lock;
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table_lock:
	table_ident opt_table_alias lock_option
7487
	{
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	  if (!Select->add_table_to_list(YYTHD, $1, $2, 0, (thr_lock_type) $3))
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	   YYABORT;
	}
7491
        ;
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lock_option:
	READ_SYM	{ $$=TL_READ_NO_INSERT; }
7495
	| WRITE_SYM     { $$=YYTHD->update_lock_default; }
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	| LOW_PRIORITY WRITE_SYM { $$=TL_WRITE_LOW_PRIORITY; }
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	| READ_SYM LOCAL_SYM { $$= TL_READ; }
        ;
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unlock:
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	UNLOCK_SYM
	{
	  LEX *lex= Lex;

	  if (lex->sphead)
	  {
	    my_message(ER_SP_BADSTATEMENT, ER(ER_SP_BADSTATEMENT), MYF(0));
	    YYABORT;
	  }
	  lex->sql_command= SQLCOM_UNLOCK_TABLES;
	}
	table_or_tables
	{}
7514
        ;
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7517
/*
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** Handler: direct access to ISAM functions
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*/

handler:
	HANDLER_SYM table_ident OPEN_SYM opt_table_alias
	{
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	  LEX *lex= Lex;
	  lex->sql_command = SQLCOM_HA_OPEN;
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	  if (!lex->current_select->add_table_to_list(lex->thd, $2, $4, 0))
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	    YYABORT;
	}
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	| HANDLER_SYM table_ident_nodb CLOSE_SYM
7530
	{
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	  LEX *lex= Lex;
	  lex->sql_command = SQLCOM_HA_CLOSE;
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	  if (!lex->current_select->add_table_to_list(lex->thd, $2, 0, 0))
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	    YYABORT;
	}
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	| HANDLER_SYM table_ident_nodb READ_SYM
7537
	{
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	  LEX *lex=Lex;
	  lex->sql_command = SQLCOM_HA_READ;
	  lex->ha_rkey_mode= HA_READ_KEY_EXACT;	/* Avoid purify warnings */
7541 7542
	  lex->current_select->select_limit= 1;
	  lex->current_select->offset_limit= 0L;
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	  if (!lex->current_select->add_table_to_list(lex->thd, $2, 0, 0))
7544
	    YYABORT;
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        }
7546
        handler_read_or_scan where_clause opt_limit_clause {}
7547
        ;
7548

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handler_read_or_scan:
7550 7551
	handler_scan_function         { Lex->ident= null_lex_str; }
        | ident handler_rkey_function { Lex->ident= $1; }
7552
        ;
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handler_scan_function:
	FIRST_SYM  { Lex->ha_read_mode = RFIRST; }
7556 7557
	| NEXT_SYM { Lex->ha_read_mode = RNEXT;  }
        ;
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handler_rkey_function:
	FIRST_SYM  { Lex->ha_read_mode = RFIRST; }
	| NEXT_SYM { Lex->ha_read_mode = RNEXT;  }
	| PREV_SYM { Lex->ha_read_mode = RPREV;  }
	| LAST_SYM { Lex->ha_read_mode = RLAST;  }
7564 7565
	| handler_rkey_mode
	{
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	  LEX *lex=Lex;
	  lex->ha_read_mode = RKEY;
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	  lex->ha_rkey_mode=$1;
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	  if (!(lex->insert_list = new List_item))
7570
	    YYABORT;
7571 7572
	} '(' values ')' { }
        ;
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handler_rkey_mode:
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	  EQ     { $$=HA_READ_KEY_EXACT;   }
	| GE     { $$=HA_READ_KEY_OR_NEXT; }
	| LE     { $$=HA_READ_KEY_OR_PREV; }
	| GT_SYM { $$=HA_READ_AFTER_KEY;   }
7579 7580
	| LT     { $$=HA_READ_BEFORE_KEY;  }
        ;
7581

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/* GRANT / REVOKE */

revoke:
7585
	REVOKE clear_privileges revoke_command
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	{}
        ;

revoke_command:
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	grant_privileges ON opt_table FROM grant_list
	{
	  Lex->sql_command = SQLCOM_REVOKE;
        }
7594
	|
7595
	ALL opt_privileges ',' GRANT OPTION FROM grant_list
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	{
	  Lex->sql_command = SQLCOM_REVOKE_ALL;
	}
7599
	;
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grant:
7602
	GRANT clear_privileges grant_privileges ON opt_table TO_SYM grant_list
7603
	require_clause grant_options
7604
	{ Lex->sql_command= SQLCOM_GRANT; }
7605
	;
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grant_privileges:
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	object_privilege_list { }
	| ALL opt_privileges
        { 
          Lex->all_privileges= 1; 
          Lex->grant= GLOBAL_ACLS;
        }
7614
        ;
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opt_privileges:
	/* empty */
	| PRIVILEGES
	;

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object_privilege_list:
	object_privilege
	| object_privilege_list ',' object_privilege;
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7625
object_privilege:
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	SELECT_SYM	{ Lex->which_columns = SELECT_ACL;} opt_column_list {}
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	| INSERT	{ Lex->which_columns = INSERT_ACL;} opt_column_list {}
	| UPDATE_SYM	{ Lex->which_columns = UPDATE_ACL; } opt_column_list {}
	| REFERENCES	{ Lex->which_columns = REFERENCES_ACL;} opt_column_list {}
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	| DELETE_SYM	{ Lex->grant |= DELETE_ACL;}
	| USAGE		{}
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	| INDEX_SYM	{ Lex->grant |= INDEX_ACL;}
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	| ALTER		{ Lex->grant |= ALTER_ACL;}
	| CREATE	{ Lex->grant |= CREATE_ACL;}
	| DROP		{ Lex->grant |= DROP_ACL;}
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	| EXECUTE_SYM	{ Lex->grant |= EXECUTE_ACL;}
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	| RELOAD	{ Lex->grant |= RELOAD_ACL;}
	| SHUTDOWN	{ Lex->grant |= SHUTDOWN_ACL;}
	| PROCESS	{ Lex->grant |= PROCESS_ACL;}
	| FILE_SYM	{ Lex->grant |= FILE_ACL;}
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	| GRANT OPTION  { Lex->grant |= GRANT_ACL;}
	| SHOW DATABASES { Lex->grant |= SHOW_DB_ACL;}
	| SUPER_SYM	{ Lex->grant |= SUPER_ACL;}
	| CREATE TEMPORARY TABLES { Lex->grant |= CREATE_TMP_ACL;}
	| LOCK_SYM TABLES   { Lex->grant |= LOCK_TABLES_ACL; }
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	| REPLICATION SLAVE  { Lex->grant |= REPL_SLAVE_ACL; }
	| REPLICATION CLIENT_SYM { Lex->grant |= REPL_CLIENT_ACL; }
	| CREATE VIEW_SYM { Lex->grant |= CREATE_VIEW_ACL; }
	| SHOW VIEW_SYM { Lex->grant |= SHOW_VIEW_ACL; }
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	| CREATE ROUTINE_SYM { Lex->grant |= CREATE_PROC_ACL; }
	| ALTER ROUTINE_SYM { Lex->grant |= ALTER_PROC_ACL; }
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	;
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opt_and:
	/* empty */	{}
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	| AND_SYM	{}
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	;

require_list:
	 require_list_element opt_and require_list
	 | require_list_element
	 ;

require_list_element:
	SUBJECT_SYM TEXT_STRING
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	{
	  LEX *lex=Lex;
	  if (lex->x509_subject)
	  {
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	    my_error(ER_DUP_ARGUMENT, MYF(0), "SUBJECT");
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	    YYABORT;
	  }
	  lex->x509_subject=$2.str;
	}
	| ISSUER_SYM TEXT_STRING
	{
	  LEX *lex=Lex;
	  if (lex->x509_issuer)
	  {
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	    my_error(ER_DUP_ARGUMENT, MYF(0), "ISSUER");
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	    YYABORT;
	  }
	  lex->x509_issuer=$2.str;
	}
	| CIPHER_SYM TEXT_STRING
	{
	  LEX *lex=Lex;
	  if (lex->ssl_cipher)
	  {
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	    my_error(ER_DUP_ARGUMENT, MYF(0), "CIPHER");
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	    YYABORT;
	  }
	  lex->ssl_cipher=$2.str;
	}
	;
7697

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opt_table:
	'*'
	  {
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	    LEX *lex= Lex;
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	    lex->current_select->db= lex->thd->db;
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	    if (lex->grant == GLOBAL_ACLS)
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	      lex->grant = DB_ACLS & ~GRANT_ACL;
	    else if (lex->columns.elements)
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	    {
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	      my_message(ER_ILLEGAL_GRANT_FOR_TABLE,
                         ER(ER_ILLEGAL_GRANT_FOR_TABLE), MYF(0));
7709
	      YYABORT;
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	    }
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	  }
	| ident '.' '*'
	  {
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	    LEX *lex= Lex;
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	    lex->current_select->db = $1.str;
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	    if (lex->grant == GLOBAL_ACLS)
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	      lex->grant = DB_ACLS & ~GRANT_ACL;
	    else if (lex->columns.elements)
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	    {
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	      my_message(ER_ILLEGAL_GRANT_FOR_TABLE,
                         ER(ER_ILLEGAL_GRANT_FOR_TABLE), MYF(0));
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	      YYABORT;
	    }
	  }
	| '*' '.' '*'
	  {
7727
	    LEX *lex= Lex;
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	    lex->current_select->db = NULL;
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	    if (lex->grant == GLOBAL_ACLS)
	      lex->grant= GLOBAL_ACLS & ~GRANT_ACL;
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	    else if (lex->columns.elements)
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	    {
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	      my_message(ER_ILLEGAL_GRANT_FOR_TABLE,
                         ER(ER_ILLEGAL_GRANT_FOR_TABLE), MYF(0));
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	      YYABORT;
	    }
	  }
	| table_ident
	  {
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	    LEX *lex=Lex;
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	    if (!lex->current_select->add_table_to_list(lex->thd, $1,NULL,0))
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	      YYABORT;
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	    if (lex->grant == GLOBAL_ACLS)
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	      lex->grant =  TABLE_ACLS & ~GRANT_ACL;
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	  }
          ;
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user_list:
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	user  { if (Lex->users_list.push_back($1)) YYABORT;}
	| user_list ',' user
	  {
	    if (Lex->users_list.push_back($3))
	      YYABORT;
	  }
	;


grant_list:
7760
	grant_user  { if (Lex->users_list.push_back($1)) YYABORT;}
7761
	| grant_list ',' grant_user
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	  {
	    if (Lex->users_list.push_back($3))
	      YYABORT;
	  }
	;
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grant_user:
	user IDENTIFIED_SYM BY TEXT_STRING
	{
	   $$=$1; $1->password=$4;
	   if ($4.length)
	   {
7775
             if (YYTHD->variables.old_passwords)
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             {
               char *buff= 
                 (char *) YYTHD->alloc(SCRAMBLED_PASSWORD_CHAR_LENGTH_323+1);
               if (buff)
                 make_scrambled_password_323(buff, $4.str);
               $1->password.str= buff;
               $1->password.length= SCRAMBLED_PASSWORD_CHAR_LENGTH_323;
             }
             else
             {
               char *buff= 
                 (char *) YYTHD->alloc(SCRAMBLED_PASSWORD_CHAR_LENGTH+1);
               if (buff)
                 make_scrambled_password(buff, $4.str);
               $1->password.str= buff;
               $1->password.length= SCRAMBLED_PASSWORD_CHAR_LENGTH;
             }
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	  }
	}
	| user IDENTIFIED_SYM BY PASSWORD TEXT_STRING
7796
	  { $$= $1; $1->password= $5; }
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	| user
7798
	  { $$= $1; $1->password= null_lex_str; }
7799
        ;
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opt_column_list:
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	/* empty */
	{
	  LEX *lex=Lex;
	  lex->grant |= lex->which_columns;
	}
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	| '(' column_list ')';
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column_list:
	column_list ',' column_list_id
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	| column_list_id;
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column_list_id:
	ident
	{
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	  String *new_str = new (YYTHD->mem_root) String((const char*) $1.str,$1.length,system_charset_info);
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	  List_iterator <LEX_COLUMN> iter(Lex->columns);
	  class LEX_COLUMN *point;
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	  LEX *lex=Lex;
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	  while ((point=iter++))
	  {
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	    if (!my_strcasecmp(system_charset_info,
                               point->column.ptr(), new_str->ptr()))
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		break;
	  }
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	  lex->grant_tot_col|= lex->which_columns;
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	  if (point)
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	    point->rights |= lex->which_columns;
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	  else
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	    lex->columns.push_back(new LEX_COLUMN (*new_str,lex->which_columns));
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	}
        ;
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require_clause: /* empty */
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        | REQUIRE_SYM require_list
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          {
            Lex->ssl_type=SSL_TYPE_SPECIFIED;
          }
7841
        | REQUIRE_SYM SSL_SYM
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          {
            Lex->ssl_type=SSL_TYPE_ANY;
          }
7845
        | REQUIRE_SYM X509_SYM
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          {
            Lex->ssl_type=SSL_TYPE_X509;
          }
	| REQUIRE_SYM NONE_SYM
	  {
	    Lex->ssl_type=SSL_TYPE_NONE;
	  }
7853
          ;
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grant_options:
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	/* empty */ {}
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	| WITH grant_option_list;
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grant_option_list:
	grant_option_list grant_option {}
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	| grant_option {}
        ;
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grant_option:
	GRANT OPTION { Lex->grant |= GRANT_ACL;}
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        | MAX_QUERIES_PER_HOUR ULONG_NUM
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        {
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	  LEX *lex=Lex;
	  lex->mqh.questions=$2;
	  lex->mqh.specified_limits|= USER_RESOURCES::QUERIES_PER_HOUR;
7871
	}
7872
        | MAX_UPDATES_PER_HOUR ULONG_NUM
7873
        {
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	  LEX *lex=Lex;
	  lex->mqh.updates=$2;
	  lex->mqh.specified_limits|= USER_RESOURCES::UPDATES_PER_HOUR;
7877
	}
7878
        | MAX_CONNECTIONS_PER_HOUR ULONG_NUM
7879
        {
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	  LEX *lex=Lex;
	  lex->mqh.conn_per_hour= $2;
	  lex->mqh.specified_limits|= USER_RESOURCES::CONNECTIONS_PER_HOUR;
7883
	}
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        | MAX_USER_CONNECTIONS_SYM ULONG_NUM
        {
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	  LEX *lex=Lex;
          lex->mqh.user_conn= $2;
          lex->mqh.specified_limits|= USER_RESOURCES::USER_CONNECTIONS;
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	}
        ;
7891

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begin:
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	BEGIN_SYM  
        {
	  LEX *lex=Lex;
          lex->sql_command = SQLCOM_BEGIN;
          lex->start_transaction_opt= 0;
        }
        opt_work {}
7900
	;
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opt_work:
	/* empty */ {}
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	| WORK_SYM  {}
7905
        ;
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opt_chain:
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	/* empty */ { $$= (YYTHD->variables.completion_type == 1); }
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	| AND_SYM NO_SYM CHAIN_SYM	{ $$=0; }
	| AND_SYM CHAIN_SYM		{ $$=1; }
	;

opt_release:
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	/* empty */ { $$= (YYTHD->variables.completion_type == 2); }
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	| RELEASE_SYM 			{ $$=1; }
	| NO_SYM RELEASE_SYM 		{ $$=0; }
	;
	
opt_savepoint:
	/* empty */	{}
	| SAVEPOINT_SYM {}
	;

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commit:
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	COMMIT_SYM opt_work opt_chain opt_release
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	{
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	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_COMMIT;
	  lex->tx_chain= $3; 
	  lex->tx_release= $4;
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	}
	;
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rollback:
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	ROLLBACK_SYM opt_work opt_chain opt_release
7936
	{
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	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_ROLLBACK;
	  lex->tx_chain= $3; 
	  lex->tx_release= $4;
7941
	}
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	| ROLLBACK_SYM opt_work
	  TO_SYM opt_savepoint ident
7944
	{
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	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_ROLLBACK_TO_SAVEPOINT;
	  lex->ident= $5;
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	}
	;

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savepoint:
	SAVEPOINT_SYM ident
	{
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	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_SAVEPOINT;
	  lex->ident= $2;
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	}
	;

release:
	RELEASE_SYM SAVEPOINT_SYM ident
	{
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	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_RELEASE_SAVEPOINT;
	  lex->ident= $3;
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	}
	;
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7969
/*
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   UNIONS : glue selects together
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*/


7974
union_clause:
7975
	/* empty */ {}
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	| union_list
	;
7978 7979

union_list:
7980
	UNION_SYM union_option
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	{
	  LEX *lex=Lex;
	  if (lex->exchange)
	  {
	    /* Only the last SELECT can have  INTO...... */
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	    my_error(ER_WRONG_USAGE, MYF(0), "UNION", "INTO");
7987
	    YYABORT;
7988
	  }
7989
	  if (lex->current_select->linkage == GLOBAL_OPTIONS_TYPE)
7990
	  {
7991
            yyerror(ER(ER_SYNTAX_ERROR));
7992 7993
	    YYABORT;
	  }
7994
	  if (mysql_new_select(lex, 0))
7995
	    YYABORT;
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          mysql_init_select(lex);
7997
	  lex->current_select->linkage=UNION_TYPE;
7998 7999 8000
          if ($2) /* UNION DISTINCT - remember position */
            lex->current_select->master_unit()->union_distinct=
                                                      lex->current_select;
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	}
8002
	select_init {}
8003
	;
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union_opt:
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	union_list {}
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	| optional_order_or_limit {}
	;
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optional_order_or_limit:
8011
	/* Empty */ {}
8012 8013
	|
	  {
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	    THD *thd= YYTHD;
8015
	    LEX *lex= thd->lex;
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	    DBUG_ASSERT(lex->current_select->linkage != GLOBAL_OPTIONS_TYPE);
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	    SELECT_LEX *sel= lex->current_select;
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	    SELECT_LEX_UNIT *unit= sel->master_unit();
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	    SELECT_LEX *fake= unit->fake_select_lex;
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	    if (fake)
	    {
	      unit->global_parameters= fake;
	      fake->no_table_names_allowed= 1;
	      lex->current_select= fake;
	    }
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	    thd->where= "global ORDER clause";
8027
	  }
8028
	order_or_limit
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          {
	    THD *thd= YYTHD;
8031
	    thd->lex->current_select->no_table_names_allowed= 0;
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	    thd->where= "";
          }
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	;

order_or_limit:
8037 8038
	order_clause opt_limit_clause_init
	| limit_clause
8039
	;
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union_option:
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	/* empty */ { $$=1; }
	| DISTINCT  { $$=1; }
	| ALL       { $$=0; }
        ;
8046

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singlerow_subselect:
	subselect_start singlerow_subselect_init
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	subselect_end
	{
	  $$= $2;
	};
8053

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singlerow_subselect_init:
8055
	select_init2
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	{
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	  $$= new Item_singlerow_subselect(Lex->current_select->
					   master_unit()->first_select());
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	};
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exists_subselect:
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	subselect_start exists_subselect_init
	subselect_end
	{
	  $$= $2;
	};
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exists_subselect_init:
8069
	select_init2
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	{
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	  $$= new Item_exists_subselect(Lex->current_select->master_unit()->
					first_select());
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	};
8074

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in_subselect:
  subselect_start in_subselect_init
  subselect_end
  {
    $$= $2;
  };

in_subselect_init:
8083
  select_init2
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  {
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    $$= Lex->current_select->master_unit()->first_select();
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  };

8088
subselect_start:
8089
	'(' SELECT_SYM
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	{
8091
	  LEX *lex=Lex;
8092
	  if (((int)lex->sql_command >= (int)SQLCOM_HA_OPEN &&
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	       lex->sql_command <= (int)SQLCOM_HA_READ) ||
	       lex->sql_command == (int)SQLCOM_KILL)
8095 8096
	  {
            yyerror(ER(ER_SYNTAX_ERROR));
8097 8098
	    YYABORT;
	  }
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	  if (mysql_new_select(Lex, 1))
	    YYABORT;
	};
8102 8103

subselect_end:
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	')'
	{
	  LEX *lex=Lex;
8107
	  lex->current_select = lex->current_select->return_after_parsing();
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	};
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opt_view_list:
	/* empty */ {}
	| '(' view_list ')'
	;

view_list:
	ident 
	  {
	    Lex->view_list.push_back((LEX_STRING*)
				     sql_memdup(&$1, sizeof(LEX_STRING)));
	  }
	| view_list ',' ident
	  {
	    Lex->view_list.push_back((LEX_STRING*)
				     sql_memdup(&$3, sizeof(LEX_STRING)));
	  }
	;

or_replace:
	/* empty */	 { Lex->create_view_mode= VIEW_CREATE_NEW; }
	| OR_SYM REPLACE { Lex->create_view_mode= VIEW_CREATE_OR_REPLACE; }
	;

algorithm:
	/* empty */
	  { Lex->create_view_algorithm= VIEW_ALGORITHM_UNDEFINED; }
	| ALGORITHM_SYM EQ UNDEFINED_SYM
	  { Lex->create_view_algorithm= VIEW_ALGORITHM_UNDEFINED; }
	| ALGORITHM_SYM EQ MERGE_SYM
	  { Lex->create_view_algorithm= VIEW_ALGORITHM_MERGE; }
	| ALGORITHM_SYM EQ TEMPTABLE_SYM
	  { Lex->create_view_algorithm= VIEW_ALGORITHM_TMPTABLE; }
	;
check_option:
        /* empty */
          { Lex->create_view_check= VIEW_CHECK_NONE; }
        | WITH CHECK_SYM OPTION
          { Lex->create_view_check= VIEW_CHECK_CASCADED; }
        | WITH CASCADED CHECK_SYM OPTION
          { Lex->create_view_check= VIEW_CHECK_CASCADED; }
        | WITH LOCAL_SYM CHECK_SYM OPTION
          { Lex->create_view_check= VIEW_CHECK_LOCAL; }
        ;

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xa: XA_SYM begin_or_start xid opt_join_or_resume
      {
        LEX *lex= Lex;
        lex->sql_command = SQLCOM_XA_START;
      }
    | XA_SYM END xid opt_suspend_or_migrate
      {
        LEX *lex= Lex;
        lex->sql_command = SQLCOM_XA_END;
      }
    | XA_SYM PREPARE_SYM xid
      {
        LEX *lex= Lex;
        lex->sql_command = SQLCOM_XA_PREPARE;
      }
    | XA_SYM COMMIT_SYM xid opt_one_phase
      {
        LEX *lex= Lex;
        lex->sql_command = SQLCOM_XA_COMMIT;
      }
    | XA_SYM ROLLBACK_SYM xid
      {
        LEX *lex= Lex;
        lex->sql_command = SQLCOM_XA_ROLLBACK;
      }
    | XA_SYM RECOVER_SYM
      {
        LEX *lex= Lex;
        lex->sql_command = SQLCOM_XA_RECOVER;
      }
    ;

xid: ident_or_text              { Lex->ident=$1; }
8187
    ;
8188 8189 8190 8191 8192 8193 8194 8195 8196 8197 8198 8199 8200 8201 8202 8203 8204 8205 8206 8207 8208 8209 8210

begin_or_start:   BEGIN_SYM {}
    |             START_SYM {}
    ;

opt_join_or_resume:
    /* nothing */           { Lex->xa_opt=XA_NONE;        }
    | JOIN_SYM              { Lex->xa_opt=XA_JOIN;        }
    | RESUME_SYM            { Lex->xa_opt=XA_RESUME;      }
    ;

opt_one_phase:
    /* nothing */           { Lex->xa_opt=XA_NONE;        }
    | ONE_SYM PHASE_SYM     { Lex->xa_opt=XA_ONE_PHASE;   }
    ;

opt_suspend_or_migrate:
    /* nothing */           { Lex->xa_opt=XA_NONE;        }
    | SUSPEND_SYM           { Lex->xa_opt=XA_SUSPEND;     }
    | FOR_SYM MIGRATE_SYM   { Lex->xa_opt=XA_FOR_MIGRATE; }
    ;