sql_yacc.yy 144 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 "sql_acl.h"
#include "lex_symbol.h"
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#include "item_create.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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#define yyoverflow(A,B,C,D,E,F) if (my_yyoverflow((B),(D),(int*) (F))) { yyerror((char*) (A)); return 2; }
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#define WARN_DEPRECATED(A,B) \
  push_warning_printf(((THD *)yythd), MYSQL_ERROR::WARN_LEVEL_WARN, \
		      ER_WARN_DEPRECATED_SYNTAX, \
		      ER(ER_WARN_DEPRECATED_SYNTAX), (A), (B)); 

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inline Item *or_or_concat(THD *thd, Item* A, Item* B)
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{
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  return (thd->variables.sql_mode & MODE_PIPES_AS_CONCAT ?
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          (Item*) new Item_func_concat(A,B) : (Item*) new Item_cond_or(A,B));
}

%}
%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;
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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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}

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

%pure_parser					/* We have threads */

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%token	DAY_MICROSECOND_SYM
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%token	DAY_MINUTE_SYM
%token	DAY_SECOND_SYM
%token	DAY_SYM
%token	DECODE_SYM
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%token	DES_ENCRYPT_SYM
%token	DES_DECRYPT_SYM
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%token	ELSE
%token	ELT_FUNC
%token	ENCODE_SYM
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%token	ENGINE_SYM
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%token	ENGINES_SYM
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%token	ENCRYPT
%token	EXPORT_SET
%token	EXTRACT_SYM
%token	FIELD_FUNC
%token	FORMAT_SYM
%token	FOR_SYM
%token	FROM_UNIXTIME
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%token	GEOMCOLLFROMTEXT
%token	GEOMFROMTEXT
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%token	GEOMFROMWKB
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%token  GEOMETRYCOLLECTION
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%token  GROUP_CONCAT_SYM
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%token	GROUP_UNIQUE_USERS
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%token  GET_FORMAT
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%token	HOUR_MICROSECOND_SYM
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%token	HOUR_MINUTE_SYM
%token	HOUR_SECOND_SYM
%token	HOUR_SYM
%token	IDENTIFIED_SYM
%token	IF
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%token	INSERT_METHOD
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%token	INTERVAL_SYM
%token	LAST_INSERT_ID
%token	LEFT
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%token	LINEFROMTEXT
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%token  LINESTRING
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%token	LOCATE
%token	MAKE_SET_SYM
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%token	MASTER_POS_WAIT
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%token  MICROSECOND_SYM
%token	MINUTE_MICROSECOND_SYM
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%token	MINUTE_SECOND_SYM
%token	MINUTE_SYM
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%token	MODE_SYM
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%token	MODIFY_SYM
%token	MONTH_SYM
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%token	MLINEFROMTEXT
%token	MPOINTFROMTEXT
%token	MPOLYFROMTEXT
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%token  MULTILINESTRING
%token  MULTIPOINT
%token  MULTIPOLYGON
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%token	NOW_SYM
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%token	OLD_PASSWORD
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%token	PASSWORD
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%token	POINTFROMTEXT
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%token	POINT_SYM
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%token	POLYFROMTEXT
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%token  POLYGON
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%token	POSITION_SYM
%token	PROCEDURE
%token	RAND
%token	REPLACE
%token	RIGHT
%token	ROUND
%token	SECOND_SYM
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%token	SECOND_MICROSECOND_SYM
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%token	SHARE_SYM
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%token	SUBDATE_SYM
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%token	SUBSTRING
%token	SUBSTRING_INDEX
%token	TRIM
%token	UDA_CHAR_SUM
%token	UDA_FLOAT_SUM
%token	UDA_INT_SUM
%token	UDF_CHAR_FUNC
%token	UDF_FLOAT_FUNC
%token	UDF_INT_FUNC
%token	UNIQUE_USERS
%token	UNIX_TIMESTAMP
%token	USER
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%token	UTC_DATE_SYM
%token	UTC_TIME_SYM
%token	UTC_TIMESTAMP_SYM
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%token	WEEK_SYM
%token	WHEN_SYM
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%token	WORK_SYM
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%token	YEAR_MONTH_SYM
%token	YEAR_SYM
%token	YEARWEEK
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%token	BENCHMARK_SYM
%token	END
%token	THEN_SYM
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%token	SQL_BIG_RESULT
%token	SQL_CACHE_SYM
%token	SQL_CALC_FOUND_ROWS
%token	SQL_NO_CACHE_SYM
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%token	SQL_SMALL_RESULT
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%token  SQL_BUFFER_RESULT
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%token  ISSUER_SYM
%token  SUBJECT_SYM
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%token  CIPHER_SYM
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%token  BEFORE_SYM
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%left   SET_VAR
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%left	OR_OR_CONCAT OR_SYM XOR
%left	AND_SYM
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%left	BETWEEN_SYM CASE_SYM WHEN_SYM THEN_SYM ELSE
%left	EQ EQUAL_SYM GE GT_SYM LE LT NE IS LIKE REGEXP IN_SYM
%left	'|'
%left	'&'
%left	SHIFT_LEFT SHIFT_RIGHT
%left	'-' '+'
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%left	'*' '/' '%' DIV_SYM MOD_SYM
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%left   '^'
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%left	NEG '~'
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%right	NOT
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%right	BINARY COLLATE_SYM
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%type <lex_str>
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	IDENT IDENT_QUOTED TEXT_STRING REAL_NUM FLOAT_NUM NUM LONG_NUM HEX_NUM
	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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%type <lex_str_ptr>
	opt_table_alias

%type <table>
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	table_ident table_ident_ref references
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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_escape opt_constraint
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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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%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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	table_wild no_in_expr expr_expr simple_expr no_and_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
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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 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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%type <udf>
	UDF_CHAR_FUNC UDF_FLOAT_FUNC UDF_INT_FUNC
	UDA_CHAR_SUM UDA_FLOAT_SUM UDA_INT_SUM

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%type <date_time_type> date_time_type;
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%type <interval> interval

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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
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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  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
	opt_column_list grant_privileges opt_table user_list grant_option
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	grant_privilege grant_privilege_list
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	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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END_OF_INPUT
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%type <NONE>
	'-' '+' '*' '/' '%' '(' ')'
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	',' '!' '{' '}' '&' '|' AND_SYM OR_SYM OR_OR_CONCAT BETWEEN_SYM CASE_SYM
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	THEN_SYM WHEN_SYM DIV_SYM MOD_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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	     send_error(thd,ER_EMPTY_QUERY);
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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:
	  alter
	| analyze
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	| backup
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	| begin
	| change
	| check
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	| checksum
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	| commit
	| create
	| delete
	| describe
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	| do
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	| drop
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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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	| purge
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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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        ;
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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:
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       MASTER_HOST_SYM EQ TEXT_STRING_sys
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       {
	 Lex->mi.host = $3.str;
       }
       |
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       MASTER_USER_SYM EQ TEXT_STRING_sys
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       {
	 Lex->mi.user = $3.str;
       }
       |
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       MASTER_PASSWORD_SYM EQ TEXT_STRING_sys
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       {
	 Lex->mi.password = $3.str;
       }
       |
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       MASTER_PORT_SYM EQ ULONG_NUM
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       {
	 Lex->mi.port = $3;
       }
       |
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       MASTER_CONNECT_RETRY_SYM EQ ULONG_NUM
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       {
	 Lex->mi.connect_retry = $3;
       }
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       | 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;
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	 }
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       |
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         master_file_def
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       ;
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master_file_def:
       MASTER_LOG_FILE_SYM EQ TEXT_STRING_sys
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       {
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	 Lex->mi.log_file_name = $3.str;
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       }
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       | 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);
         }
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       ;
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/* create a table */

create:
	CREATE opt_table_options TABLE_SYM opt_if_not_exists table_ident
	{
917
	  THD *thd= YYTHD;
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	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_CREATE_TABLE;
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	  if (!lex->select_lex.add_table_to_list(thd,$5,
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						 ($2 &
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						  HA_LEX_CREATE_TMP_TABLE ?
						  &tmp_table_alias :
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						  (LEX_STRING*) 0),
						 TL_OPTION_UPDATING,
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						 (using_update_log ?
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						  TL_READ_NO_INSERT:
						  TL_READ)))
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	    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;
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	  lex->create_info.db_type= (enum db_type) lex->thd->variables.table_type;
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	  lex->create_info.default_table_charset= thd->variables.collation_database;
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	  lex->name=0;
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	}
	create2
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	  { Lex->current_select= &Lex->select_lex; }
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	| CREATE opt_unique_or_fulltext INDEX ident key_alg ON table_ident
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	  {
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	    LEX *lex=Lex;
	    lex->sql_command= SQLCOM_CREATE_INDEX;
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	    if (!lex->current_select->add_table_to_list(lex->thd, $7, NULL,
							TL_OPTION_UPDATING))
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	      YYABORT;
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	    lex->create_list.empty();
	    lex->key_list.empty();
	    lex->col_list.empty();
	    lex->change=NullS;
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	  }
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	   '(' key_list ')'
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	  {
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	    LEX *lex=Lex;
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	    lex->key_list.push_back(new Key($2,$4.str, $5, lex->col_list));
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	    lex->col_list.empty();
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	  }
	| CREATE DATABASE opt_if_not_exists ident
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	  { Lex->create_info.default_table_charset=NULL; }
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	  opt_create_database_options
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	  {
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	    LEX *lex=Lex;
	    lex->sql_command=SQLCOM_CREATE_DB;
	    lex->name=$4.str;
            lex->create_info.options=$3;
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	  }
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	| CREATE udf_func_type UDF_SYM IDENT_sys
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	  {
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	    LEX *lex=Lex;
	    lex->sql_command = SQLCOM_CREATE_FUNCTION;
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	    lex->udf.name = $4;
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	    lex->udf.type= $2;
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	  }
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	  UDF_RETURNS_SYM udf_type UDF_SONAME_SYM TEXT_STRING_sys
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	  {
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	    LEX *lex=Lex;
	    lex->udf.returns=(Item_result) $7;
	    lex->udf.dl=$9.str;
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	  }
          ;
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create2:
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 	'(' create2a {}
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	| opt_create_table_options create3 {}
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	| LIKE table_ident
      	  {
      	    LEX *lex=Lex;
     	    if (!(lex->name= (char *)$2))
              YYABORT;
    	  }
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	| '(' LIKE table_ident ')'
      	  {
      	    LEX *lex=Lex;
     	    if (!(lex->name= (char *)$3))
              YYABORT;
    	  }
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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;
	    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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	    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_LEX_NODE::SELECT_LIST;
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          }
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          select_options select_item_list
	  {
	    Select->parsing_place= SELECT_LEX_NODE::NO_MATTER;
	  }
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	  opt_select_from
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	  { 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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	  opt_default COLLATE_SYM collation_name_or_default	
	  { Lex->create_info.default_table_charset=$3; }
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	| opt_default charset charset_name_or_default
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	  { Lex->create_info.default_table_charset=$3; }
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	;
1054

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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; }
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	| TYPE_SYM opt_equal storage_engines    { Lex->create_info.db_type= $3; WARN_DEPRECATED("TYPE=storage_engine","ENGINE=storage_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; }
	| COMMENT_SYM opt_equal TEXT_STRING_sys	{ Lex->create_info.comment=$3.str; }
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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;}
	| CHECKSUM_SYM opt_equal ULONG_NUM	{ Lex->create_info.table_options|= $3 ? HA_OPTION_CHECKSUM : HA_OPTION_NO_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; }
	| ROW_FORMAT_SYM opt_equal row_types	{ Lex->create_info.row_type= $3; }
	| 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--;
	    lex->create_info.merge_list.first= (byte*) (table_list->next);
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	    lex->select_lex.table_list.elements=1;
	    lex->select_lex.table_list.next= (byte**) &(table_list->next);
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	    table_list->next=0;
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	    lex->create_info.used_fields|= HA_CREATE_USED_UNION;
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	  }
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	| opt_default charset opt_equal charset_name_or_default
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	  {
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	    Lex->create_info.default_table_charset= $4;
	    Lex->create_info.used_fields|= HA_CREATE_USED_DEFAULT_CHARSET;
	  }
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	| opt_default COLLATE_SYM opt_equal collation_name_or_default
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	  {
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	    Lex->create_info.default_table_charset= $4;
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	    Lex->create_info.used_fields|= HA_CREATE_USED_DEFAULT_CHARSET;
	  }
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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; }
	| INDEX DIRECTORY_SYM opt_equal TEXT_STRING_sys { Lex->create_info.index_file_name= $4.str; };
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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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	    net_printf(YYTHD, ER_UNKNOWN_STORAGE_ENGINE, $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; };
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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; };
1153

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opt_select_from:
1155
	opt_limit_clause {}
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	| FROM DUAL_SYM {}
1157
	| 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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	| 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:
1179
	  field_spec 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, 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;
	    lex->key_list.push_back(new Key($2, key_name, $4, lex->col_list));
	    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;
	    lex->key_list.push_back(new foreign_key($4, lex->col_list,
				    $8,
				    lex->ref_list,
				    lex->fk_delete_opt,
				    lex->fk_update_opt,
				    lex->fk_match_option));
	    lex->col_list.empty();		/* Alloced by sql_alloc */
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	  }
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	| opt_constraint check_constraint
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	  {
	    Lex->col_list.empty();		/* Alloced by sql_alloc */
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	  }
	;

check_constraint:
	/* empty */
	| CHECK_SYM expr
	;
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opt_constraint:
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	/* empty */		{ $$=(char*) 0; }
	| CONSTRAINT opt_ident	{ $$=$2; };
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field_spec:
	field_ident
	 {
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	   LEX *lex=Lex;
	   lex->length=lex->dec=0; lex->type=0; lex->interval=0;
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	   lex->default_value= lex->on_update_value= 0;
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	   lex->comment=0;
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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, 
                                lex->comment,
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				lex->change,lex->interval,lex->charset,
				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 { $$=FIELD_TYPE_FLOAT; }
	| BIT_SYM opt_len		{ Lex->length=(char*) "1";
					  $$=FIELD_TYPE_TINY; }
	| 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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					  $$=FIELD_TYPE_STRING; }
	| varchar '(' NUM ')' opt_binary { Lex->length=$3.str;
					  $$=FIELD_TYPE_VAR_STRING; }
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	| nvarchar '(' NUM ')'		{ Lex->length=$3.str;
					  $$=FIELD_TYPE_VAR_STRING;
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					  Lex->charset=national_charset_info; }
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	| VARBINARY '(' NUM ')' 	{ Lex->length=$3.str;
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					  Lex->charset=&my_charset_bin;
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					  $$=FIELD_TYPE_VAR_STRING; }
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	| YEAR_SYM opt_len field_options { $$=FIELD_TYPE_YEAR; }
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	| DATE_SYM			{ $$=FIELD_TYPE_DATE; }
	| TIME_SYM			{ $$=FIELD_TYPE_TIME; }
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	| TIMESTAMP
	  {
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	    if (YYTHD->variables.sql_mode & MODE_MAXDB)
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	      $$=FIELD_TYPE_DATETIME;
	    else
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	      $$=FIELD_TYPE_TIMESTAMP;
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	   }
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	| TIMESTAMP '(' NUM ')'		{ Lex->length=$3.str;
					  $$=FIELD_TYPE_TIMESTAMP; }
	| 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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					  $$=FIELD_TYPE_BLOB; }
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	| spatial_type			{ 
#ifdef HAVE_SPATIAL
					  Lex->charset=&my_charset_bin;
					  Lex->uint_geom_type= (uint)$1;
					  $$=FIELD_TYPE_GEOMETRY;
#else
	                                  net_printf(Lex->thd, ER_FEATURE_DISABLED,
			                             ER(ER_FEATURE_DISABLED),
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			                             sym_group_geom.name,
	                                             sym_group_geom.needed_define);
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					  YYABORT;
#endif
					}
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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
					{ $$=FIELD_TYPE_DECIMAL;}
	| NUMERIC_SYM float_options field_options
					{ $$=FIELD_TYPE_DECIMAL;}
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	| FIXED_SYM float_options field_options
					{ $$=FIELD_TYPE_DECIMAL;}
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	| ENUM {Lex->interval_list.empty();} '(' string_list ')' opt_binary
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	  {
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	    LEX *lex=Lex;
	    lex->interval=typelib(lex->interval_list);
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	    $$=FIELD_TYPE_ENUM;
	  }
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	| SET { Lex->interval_list.empty();} '(' string_list ')' opt_binary
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	  {
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	    LEX *lex=Lex;
	    lex->interval=typelib(lex->interval_list);
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	    $$=FIELD_TYPE_SET;
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	  }
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	| LONG_SYM opt_binary		{ $$=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:
	/* empty */		{}
	| '(' NUM ')'		{ Lex->length=$2.str; }
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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; }
	| 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; 
	    lex->alter_flags|= ALTER_ADD_INDEX; 
	  }
	| opt_primary KEY_SYM 
	  {
	    LEX *lex=Lex;
	    lex->type|= PRI_KEY_FLAG | NOT_NULL_FLAG; 
	    lex->alter_flags|= ALTER_ADD_INDEX; 
	  }
	| UNIQUE_SYM	  
	  {
	    LEX *lex=Lex;
	    lex->type|= UNIQUE_FLAG; 
	    lex->alter_flags|= ALTER_ADD_INDEX; 
	  }
	| UNIQUE_SYM KEY_SYM 
	  {
	    LEX *lex=Lex;
	    lex->type|= UNIQUE_KEY_FLAG; 
	    lex->alter_flags|= ALTER_ADD_INDEX; 
	  }
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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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	    {
	      net_printf(YYTHD,ER_COLLATION_CHARSET_MISMATCH,
			 $2->name,Lex->charset->csname);
	      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 (!($$=get_charset_by_csname($1.str,MY_CS_PRIMARY,MYF(0))))
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	  {
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	    net_printf(YYTHD,ER_UNKNOWN_CHARACTER_SET,$1.str);
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	    YYABORT;
	  }
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	}
	| BINARY { $$= &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)))
	  {
	    net_printf(YYTHD,ER_UNKNOWN_CHARACTER_SET,$1.str);
	    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:
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	ident_or_text
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	{
	  if (!($$=get_charset_by_name($1.str,MYF(0))))
	  {
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	    net_printf(YYTHD,ER_UNKNOWN_COLLATION,$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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	  {
	    net_printf(YYTHD,ER_UNKNOWN_CHARACTER_SET,"ucs2");
	    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
	    $$= Key::SPATIAL;
#else
	    net_printf(Lex->thd, ER_FEATURE_DISABLED,
	               ER(ER_FEATURE_DISABLED),
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		       sym_group_geom.name, sym_group_geom.needed_define);
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	    YYABORT;
#endif
	  };
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constraint_key_type:
	PRIMARY_SYM KEY_SYM  { $$= 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 {};
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opt_key_or_index:
	/* empty */ {}
	| key_or_index
	;

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keys_or_index:
	KEYS {}
	| INDEX {}
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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
	    net_printf(Lex->thd, ER_FEATURE_DISABLED,
	               ER(ER_FEATURE_DISABLED),
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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:
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	/* 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			{ $$=new key_part_spec($1.str); }
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	| ident '(' NUM ')'	{ $$=new key_part_spec($1.str,(uint) atoi($3.str)); };
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opt_ident:
	/* empty */	{ $$=(char*) 0; }	/* Defaultlength */
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	| field_ident	{ $$=$1.str; };
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opt_component:
	/* empty */	 { $$.str= 0; $$.length= 0; }
	| '.' ident	 { $$=$2; };
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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
	{
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	  THD *thd= YYTHD;
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	  LEX *lex= thd->lex;
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	  lex->sql_command = SQLCOM_ALTER_TABLE;
	  lex->name=0;
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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();
	  lex->drop_list.empty();
	  lex->alter_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= thd->variables.collation_database;
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	  lex->create_info.row_type= ROW_TYPE_NOT_USED;
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          lex->alter_keys_onoff=LEAVE_AS_IS;
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	  lex->tablespace_op=NO_TABLESPACE_OP;
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          lex->simple_alter=1;
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	  lex->alter_flags=0;
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	}
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	alter_list
	{}
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	| ALTER DATABASE ident opt_create_database_options
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	  {
	    LEX *lex=Lex;
	    lex->sql_command=SQLCOM_ALTER_DB;
	    lex->name=$3.str;
1732
	  };
1733 1734


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alter_list:
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	| DISCARD TABLESPACE { Lex->tablespace_op=DISCARD_TABLESPACE; }
	| IMPORT TABLESPACE { Lex->tablespace_op=IMPORT_TABLESPACE; }
1738
        | alter_list_item
1739
	| alter_list ',' alter_list_item;
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add_column:
1742 1743 1744 1745 1746 1747
	ADD opt_column 
	{
	  LEX *lex=Lex;
	  lex->change=0; 
	  lex->alter_flags|= ALTER_ADD_COLUMN; 
	};
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alter_list_item:
1750
	add_column column_def opt_place { Lex->simple_alter=0; }
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	| ADD key_def 
	  { 
	    LEX *lex=Lex;
	    lex->simple_alter=0; 
	    lex->alter_flags|= ALTER_ADD_INDEX; 
	  }
1757
	| add_column '(' field_list ')'      { Lex->simple_alter=0; }
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	| CHANGE opt_column field_ident
	  {
	     LEX *lex=Lex;
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	     lex->change= $3.str; 
	     lex->simple_alter=0;
	     lex->alter_flags|= ALTER_CHANGE_COLUMN;
1764
	  }
1765
          field_spec opt_place
1766 1767 1768 1769
        | MODIFY_SYM opt_column field_ident
          {
            LEX *lex=Lex;
            lex->length=lex->dec=0; lex->type=0; lex->interval=0;
1770
            lex->default_value= lex->on_update_value= 0;
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	    lex->comment=0;
1772
	    lex->charset= NULL;
1773
            lex->simple_alter=0;
1774
	    lex->alter_flags|= ALTER_CHANGE_COLUMN;
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          }
          type opt_attribute
          {
            LEX *lex=Lex;
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1779
            if (add_field_to_list(lex->thd,$3.str,
1780 1781
                                  (enum enum_field_types) $5,
                                  lex->length,lex->dec,lex->type,
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                                  lex->default_value, lex->on_update_value,
                                  lex->comment,
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				  $3.str, lex->interval, lex->charset,
				  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;
	    lex->drop_list.push_back(new Alter_drop(Alter_drop::COLUMN,
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        					    $3.str)); 
	    lex->simple_alter=0;
	    lex->alter_flags|= ALTER_DROP_COLUMN;
1796
	  }
1797
	| DROP FOREIGN KEY_SYM opt_ident { Lex->simple_alter=0; }
1798 1799 1800
	| DROP PRIMARY_SYM KEY_SYM
	  {
	    LEX *lex=Lex;
1801 1802 1803
	    lex->drop_list.push_back(new Alter_drop(Alter_drop::KEY,
						    primary_key_name));
	    lex->simple_alter=0;
1804
	    lex->alter_flags|= ALTER_DROP_INDEX;
1805
	  }
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	| DROP key_or_index field_ident
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	  {
	    LEX *lex=Lex;
	    lex->drop_list.push_back(new Alter_drop(Alter_drop::KEY,
						    $3.str));
	    lex->simple_alter=0;
1812
	    lex->alter_flags|= ALTER_DROP_INDEX;
1813
	  }
1814 1815
	| DISABLE_SYM KEYS { Lex->alter_keys_onoff=DISABLE; }
	| ENABLE_SYM KEYS  { Lex->alter_keys_onoff=ENABLE; }
1816
	| ALTER opt_column field_ident SET DEFAULT signed_literal
1817 1818 1819 1820
	  {
	    LEX *lex=Lex;
	    lex->alter_list.push_back(new Alter_column($3.str,$6));
	    lex->simple_alter=0;
1821
	    lex->alter_flags|= ALTER_CHANGE_COLUMN;
1822
	  }
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	| ALTER opt_column field_ident DROP DEFAULT
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	  {
	    LEX *lex=Lex;
	    lex->alter_list.push_back(new Alter_column($3.str,(Item*) 0));
	    lex->simple_alter=0;
1828
	    lex->alter_flags|= ALTER_CHANGE_COLUMN;
1829
	  }
1830
	| RENAME opt_to table_ident
1831
	  {
1832
	    LEX *lex=Lex;
1833
	    lex->select_lex.db=$3->db.str;
1834
	    lex->name= $3->table.str;
1835
	    lex->alter_flags|= ALTER_RENAME;
1836
	  }
1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850
	| 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))
	    {
	      net_printf(YYTHD,ER_COLLATION_CHARSET_MISMATCH,
			 $5->name,$4->csname);
	      YYABORT;
	    }
1851
	    LEX *lex= Lex;
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1852 1853 1854 1855
	    lex->create_info.table_charset= 
	      lex->create_info.default_table_charset= $5;
	    lex->create_info.used_fields|= (HA_CREATE_USED_CHARSET |
					    HA_CREATE_USED_DEFAULT_CHARSET);
1856
	    lex->simple_alter= 0;
1857
	  }
1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869
        | create_table_options_space_separated 
	  {
	    LEX *lex=Lex;
	    lex->simple_alter=0; 
	    lex->alter_flags|= ALTER_OPTIONS;
	  }
	| order_clause         
	  {
	    LEX *lex=Lex;
	    lex->simple_alter=0; 
	    lex->alter_flags|= ALTER_ORDER;
	  };
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opt_column:
	/* empty */	{}
1873
	| COLUMN_SYM	{};
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opt_ignore:
	/* empty */	{ Lex->duplicates=DUP_ERROR; }
1877
	| IGNORE_SYM	{ Lex->duplicates=DUP_IGNORE; };
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opt_restrict:
	/* empty */	{}
	| RESTRICT	{}
1882
	| CASCADE	{};
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opt_place:
	/* empty */	{}
	| AFTER_SYM ident { store_position_for_column($2.str); }
1887
	| FIRST_SYM	  { store_position_for_column(first_keyword); };
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opt_to:
	/* empty */	{}
	| TO_SYM	{}
1892
	| EQ		{}
1893
	| AS		{};
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/*
1896
  SLAVE START and SLAVE STOP are deprecated. We keep them for compatibility.
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1897 1898
*/

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slave:
1900 1901 1902 1903 1904 1905 1906
	  START_SYM SLAVE slave_thread_opts 
          {
	    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 */
1908 1909 1910
          }
          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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          }
1918 1919 1920 1921 1922
	| SLAVE START_SYM slave_thread_opts
         {
	   LEX *lex=Lex;
           lex->sql_command = SQLCOM_SLAVE_START;
	   lex->type = 0;
1923 1924 1925 1926 1927
	    /* We'll use mi structure for UNTIL options */
	    bzero((char*) &lex->mi, sizeof(lex->mi));
          }
          slave_until
          {}
1928 1929 1930 1931 1932 1933 1934 1935
	| SLAVE STOP_SYM slave_thread_opts
         {
	   LEX *lex=Lex;
           lex->sql_command = SQLCOM_SLAVE_STOP;
	   lex->type = 0;
         }
        ;

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1937 1938 1939 1940 1941
start:
	START_SYM TRANSACTION_SYM { Lex->sql_command = SQLCOM_BEGIN;}
	{}
	;

1942
slave_thread_opts:
1943 1944
	{ Lex->slave_thd_opt= 0; }
	slave_thread_opt_list
1945
        {}
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1946
	;
1947 1948

slave_thread_opt_list:
1949
	slave_thread_opt
1950 1951
	| slave_thread_opt_list ',' slave_thread_opt
	;
1952 1953

slave_thread_opt:
1954
	/*empty*/	{}
1955
	| SQL_THREAD	{ Lex->slave_thd_opt|=SLAVE_SQL; }
1956
	| RELAY_THREAD 	{ Lex->slave_thd_opt|=SLAVE_IO; }
1957
	;
1958

1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980
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)))
            {
               send_error(lex->thd, ER_BAD_SLAVE_UNTIL_COND);
               YYABORT;
            }

          }
	;

slave_until_opts:
       master_file_def
       | slave_until_opts ',' master_file_def ;


1981 1982 1983 1984 1985
restore:
	RESTORE_SYM table_or_tables
	{
	   Lex->sql_command = SQLCOM_RESTORE_TABLE;
	}
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1986
	table_list FROM TEXT_STRING_sys
1987 1988
        {
	  Lex->backup_dir = $6.str;
1989
        };
1990

1991 1992 1993 1994 1995
backup:
	BACKUP_SYM table_or_tables
	{
	   Lex->sql_command = SQLCOM_BACKUP_TABLE;
	}
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1996
	table_list TO_SYM TEXT_STRING_sys
1997 1998
        {
	  Lex->backup_dir = $6.str;
1999
        };
2000

2001 2002 2003 2004 2005 2006
checksum:
        CHECKSUM_SYM table_or_tables
	{
	   LEX *lex=Lex;
	   lex->sql_command = SQLCOM_CHECKSUM;
	}
2007 2008
	table_list opt_checksum_type
        {}
2009 2010
	;

2011 2012 2013 2014 2015 2016
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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2017
repair:
2018
	REPAIR opt_no_write_to_binlog table_or_tables
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2019
	{
2020 2021
	   LEX *lex=Lex;
	   lex->sql_command = SQLCOM_REPAIR;
2022
           lex->no_write_to_binlog= $2;
2023
	   lex->check_opt.init();
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	}
2025 2026 2027
	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; }
2031
	| mi_repair_types {};
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mi_repair_types:
	mi_repair_type {}
2035
	| mi_repair_type mi_repair_types {};
2036

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mi_repair_type:
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	QUICK          { Lex->check_opt.flags|= T_QUICK; }
2039
	| EXTENDED_SYM { Lex->check_opt.flags|= T_EXTEND; }
2040
        | USE_FRM      { Lex->check_opt.sql_flags|= TT_USEFRM; };
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analyze:
2043
	ANALYZE_SYM opt_no_write_to_binlog table_or_tables
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2044
	{
2045 2046
	   LEX *lex=Lex;
	   lex->sql_command = SQLCOM_ANALYZE;
2047
           lex->no_write_to_binlog= $2;
2048
	   lex->check_opt.init();
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	}
2050 2051 2052
	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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	}
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	table_list opt_mi_check_type
	{}
	;
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opt_mi_check_type:
	/* empty */ { Lex->check_opt.flags = T_MEDIUM; }
2067
	| mi_check_types {};
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mi_check_types:
	mi_check_type {}
2071
	| 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; }
2078
	| CHANGED  { Lex->check_opt.flags|= T_CHECK_ONLY_CHANGED; };
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optimize:
2081
	OPTIMIZE opt_no_write_to_binlog table_or_tables
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	{
2083 2084
	   LEX *lex=Lex;
	   lex->sql_command = SQLCOM_OPTIMIZE;
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           lex->no_write_to_binlog= $2;
2086
	   lex->check_opt.init();
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	}
2088 2089 2090
	table_list opt_mi_check_type
	{}
	;
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2092 2093 2094
opt_no_write_to_binlog:
	/* empty */        { $$= 0; }
	| NO_WRITE_TO_BINLOG  { $$= 1; }
2095
	| LOCAL_SYM  { $$= 1; }
2096 2097
	;

2098 2099 2100 2101 2102
rename:
	RENAME table_or_tables
	{
	   Lex->sql_command=SQLCOM_RENAME_TABLE;
	}
2103 2104 2105
	table_to_table_list
	{}
	;
2106 2107 2108

table_to_table_list:
	table_to_table
2109
	| table_to_table_list ',' table_to_table;
2110 2111 2112

table_to_table:
	table_ident TO_SYM table_ident
2113
	{
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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))
2120
	    YYABORT;
2121
	};
2122

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keycache:
2124
        CACHE_SYM INDEX keycache_list IN_SYM key_cache_name
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        {
          LEX *lex=Lex;
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          lex->sql_command= SQLCOM_ASSIGN_TO_KEYCACHE;
	  lex->name_and_length= $5;
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        }
        ;

keycache_list:
        assign_to_keycache
        | keycache_list ',' assign_to_keycache;

assign_to_keycache:
2137
        table_ident cache_keys_spec
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2138 2139 2140 2141 2142 2143
        {
          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(),
2144
                                      (List<String> *)0))
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            YYABORT;
        }
        ;

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key_cache_name:
	ident	   { $$= $1; }
	| DEFAULT  { $$ = default_key_cache_base; }
2152
	;
2153

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preload:
2155
	LOAD INDEX 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;
	}
	;

2181
cache_keys_spec:
2182
        { Select->interval_list.empty(); }
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        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:
2192
	/* empty */	{ Lex->select_lex.use_index_ptr= 0; }
2193
	| opt_key_or_index '(' key_usage_list2 ')'
2194 2195 2196 2197
	  {
            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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2207
  Select : retrieve data from table
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*/


select:
2212 2213 2214 2215 2216
	select_init
	{
	  LEX *lex= Lex;
	  lex->sql_command= SQLCOM_SELECT;
	  lex->select_lex.resolve_mode= SELECT_LEX::SELECT_MODE;
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	}
	;
2219

2220
/* Need select_init2 for subselects. */
2221
select_init:
2222
	SELECT_SYM select_init2
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	|
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	'(' SELECT_SYM select_part2 ')'
	  {
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	    LEX *lex= Lex;
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            SELECT_LEX * sel= lex->current_select;
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	    if (sel->set_braces(1))
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	    {
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	      yyerror(ER(ER_SYNTAX_ERROR));
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	      YYABORT;
	    }
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	  if (sel->linkage == UNION_TYPE &&
	      !sel->master_unit()->first_select()->braces)
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	  {
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	    yyerror(ER(ER_SYNTAX_ERROR));
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	    YYABORT;
	  }
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            /* 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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          } union_opt;
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select_init2:
	select_part2
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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 (lex->current_select->set_braces(0))
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	  {
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	    yyerror(ER(ER_SYNTAX_ERROR));
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	    YYABORT;
	  }
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	  if (sel->linkage == UNION_TYPE &&
	      sel->master_unit()->first_select()->braces)
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	  {
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	    yyerror(ER(ER_SYNTAX_ERROR));
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	    YYABORT;
	  }
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	}
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	union_clause
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	;

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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);
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	  lex->current_select->parsing_place= SELECT_LEX_NODE::SELECT_LIST;
	}
	select_options select_item_list
	{
	  Select->parsing_place= SELECT_LEX_NODE::NO_MATTER;
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	}
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	select_into select_lock_type;
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select_into:
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	opt_limit_clause {}
	| FROM DUAL_SYM /* 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 :) */
        | into
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	| select_from
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	| into select_from
	| select_from into;
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select_from:
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	FROM join_table_list where_clause group_clause having_clause opt_order_clause opt_limit_clause procedure_clause;
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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);
2346
	    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)++;
2359
	  };
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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)
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	      $2->set_name($1,(uint) ($3 - $1), 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	{ $$=$1; } /* table.* */
2381
	| expr		{ $$=$1; };
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select_alias:
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	/* empty */		{ $$.str=0;}
	| AS ident		{ $$=$2; }
	| AS TEXT_STRING_sys	{ $$=$2; }
	| ident			{ $$=$1; }
	| TEXT_STRING_sys	{ $$=$1; }
	;
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optional_braces:
	/* empty */ {}
2393
	| '(' ')' {};
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/* all possible expressions */
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SCRUM  
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expr:	
	expr_expr	{ $$= $1; }
	| simple_expr	{ $$= $1; }
	;
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comp_op:  EQ		{ $$ = &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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/* expressions that begin with 'expr' */
expr_expr:
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	 expr IN_SYM '(' expr_list ')'
2416
	  { $4->push_front($1); $$= new Item_func_in(*$4); }
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	| expr NOT IN_SYM '(' expr_list ')'
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	  { $5->push_front($1); $$= new Item_func_not(new Item_func_in(*$5)); }
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        | expr IN_SYM in_subselect
2420
          { $$= new Item_in_subselect($1, $3); }
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	| expr NOT IN_SYM in_subselect
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          {
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            $$= new Item_func_not(new Item_in_subselect($1, $4));
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          }
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	| expr BETWEEN_SYM no_and_expr AND_SYM expr
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	  { $$= new Item_func_between($1,$3,$5); }
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	| expr NOT BETWEEN_SYM no_and_expr AND_SYM expr
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	  { $$= new Item_func_not(new Item_func_between($1,$4,$6)); }
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	| expr OR_OR_CONCAT expr { $$= or_or_concat(YYTHD, $1,$3); }
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	| expr OR_SYM expr	{ $$= new Item_cond_or($1,$3); }
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        | expr XOR expr		{ $$= new Item_cond_xor($1,$3); }
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	| expr AND_SYM expr	{ $$= new Item_cond_and($1,$3); }
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	| expr SOUNDS_SYM LIKE expr
	  {
	    $$= new Item_func_eq(new Item_func_soundex($1),
				 new Item_func_soundex($4));
	  }
	| expr LIKE simple_expr opt_escape
          { $$= new Item_func_like($1,$3,$4); }
	| expr NOT LIKE simple_expr opt_escape
          { $$= new Item_func_not(new Item_func_like($1,$4,$5));}
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	| expr REGEXP expr { $$= new Item_func_regex($1,$3); }
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	| expr NOT REGEXP expr
          { $$= new Item_func_not(new Item_func_regex($1,$4)); }
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	| expr IS NULL_SYM	{ $$= new Item_func_isnull($1); }
	| expr IS NOT NULL_SYM { $$= new Item_func_isnotnull($1); }
	| expr EQUAL_SYM expr	{ $$= new Item_func_equal($1,$3); }
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	| expr comp_op expr %prec EQ	{ $$= (*$2)(0)->create($1,$3); }
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	| expr comp_op all_or_any in_subselect %prec EQ
	{
2451
	  $$= all_any_subquery_creator($1, $2, $3, $4);
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	}
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	| expr SHIFT_LEFT expr	{ $$= new Item_func_shift_left($1,$3); }
	| expr SHIFT_RIGHT expr { $$= new Item_func_shift_right($1,$3); }
	| expr '+' expr		{ $$= new Item_func_plus($1,$3); }
	| expr '-' expr		{ $$= new Item_func_minus($1,$3); }
	| expr '*' expr		{ $$= new Item_func_mul($1,$3); }
	| expr '/' expr		{ $$= new Item_func_div($1,$3); }
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	| expr DIV_SYM expr	{ $$= new Item_func_int_div($1,$3); }
	| expr MOD_SYM expr	{ $$= new Item_func_mod($1,$3); }
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	| expr '|' expr		{ $$= new Item_func_bit_or($1,$3); }
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        | expr '^' expr		{ $$= new Item_func_bit_xor($1,$3); }
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	| expr '&' expr		{ $$= new Item_func_bit_and($1,$3); }
	| expr '%' expr		{ $$= new Item_func_mod($1,$3); }
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	| expr '+' interval_expr interval
	  { $$= new Item_date_add_interval($1,$3,$4,0); }
	| expr '-' interval_expr interval
	  { $$= new Item_date_add_interval($1,$3,$4,1); }
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	;
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/* expressions that begin with 'expr' that do NOT follow IN_SYM */
no_in_expr:
2473
	no_in_expr BETWEEN_SYM no_and_expr AND_SYM expr
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	  { $$= new Item_func_between($1,$3,$5); }
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	| no_in_expr NOT BETWEEN_SYM no_and_expr AND_SYM expr
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	  { $$= new Item_func_not(new Item_func_between($1,$4,$6)); }
2477
	| no_in_expr OR_OR_CONCAT expr	{ $$= or_or_concat(YYTHD, $1,$3); }
2478
	| no_in_expr OR_SYM expr	{ $$= new Item_cond_or($1,$3); }
2479
        | no_in_expr XOR expr		{ $$= new Item_cond_xor($1,$3); }
2480
	| no_in_expr AND_SYM expr	{ $$= new Item_cond_and($1,$3); }
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	| no_in_expr SOUNDS_SYM LIKE expr
	  {
	    $$= new Item_func_eq(new Item_func_soundex($1),
				 new Item_func_soundex($4));
	  }
	| no_in_expr LIKE simple_expr opt_escape
	  { $$= new Item_func_like($1,$3,$4); }
	| no_in_expr NOT LIKE simple_expr opt_escape
	  { $$= new Item_func_not(new Item_func_like($1,$4,$5)); }
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	| no_in_expr REGEXP expr { $$= new Item_func_regex($1,$3); }
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	| no_in_expr NOT REGEXP expr
	  { $$= new Item_func_not(new Item_func_regex($1,$4)); }
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	| no_in_expr IS NULL_SYM	{ $$= new Item_func_isnull($1); }
	| no_in_expr IS NOT NULL_SYM { $$= new Item_func_isnotnull($1); }
	| no_in_expr EQUAL_SYM expr	{ $$= new Item_func_equal($1,$3); }
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	| no_in_expr comp_op expr %prec EQ { $$= (*$2)(0)->create($1,$3); }
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	| no_in_expr comp_op all_or_any in_subselect %prec EQ
	{
2499
	  all_any_subquery_creator($1, $2, $3, $4);
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	}
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	| no_in_expr SHIFT_LEFT expr  { $$= new Item_func_shift_left($1,$3); }
	| no_in_expr SHIFT_RIGHT expr { $$= new Item_func_shift_right($1,$3); }
	| no_in_expr '+' expr		{ $$= new Item_func_plus($1,$3); }
	| no_in_expr '-' expr		{ $$= new Item_func_minus($1,$3); }
	| no_in_expr '*' expr		{ $$= new Item_func_mul($1,$3); }
	| no_in_expr '/' expr		{ $$= new Item_func_div($1,$3); }
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	| no_in_expr DIV_SYM expr	{ $$= new Item_func_int_div($1,$3); }
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	| no_in_expr '|' expr		{ $$= new Item_func_bit_or($1,$3); }
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        | no_in_expr '^' expr		{ $$= new Item_func_bit_xor($1,$3); }
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	| no_in_expr '&' expr		{ $$= new Item_func_bit_and($1,$3); }
	| no_in_expr '%' expr		{ $$= new Item_func_mod($1,$3); }
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	| no_in_expr MOD_SYM expr	{ $$= new Item_func_mod($1,$3); }
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	| no_in_expr '+' interval_expr interval
	  { $$= new Item_date_add_interval($1,$3,$4,0); }
	| no_in_expr '-' interval_expr interval
	  { $$= new Item_date_add_interval($1,$3,$4,1); }
2517
	| simple_expr;
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/* expressions that begin with 'expr' that does NOT follow AND */
no_and_expr:
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	  no_and_expr IN_SYM '(' expr_list ')'
2522
	  { $4->push_front($1); $$= new Item_func_in(*$4); }
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	| no_and_expr NOT IN_SYM '(' expr_list ')'
2524
	  { $5->push_front($1); $$= new Item_func_not(new Item_func_in(*$5)); }
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        | no_and_expr IN_SYM in_subselect
2526
          { $$= new Item_in_subselect($1, $3); }
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	| no_and_expr NOT IN_SYM in_subselect
2528
          {
2529
            $$= new Item_func_not(new Item_in_subselect($1, $4));
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          }
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	| no_and_expr BETWEEN_SYM no_and_expr AND_SYM expr
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	  { $$= new Item_func_between($1,$3,$5); }
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	| no_and_expr NOT BETWEEN_SYM no_and_expr AND_SYM expr
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	  { $$= new Item_func_not(new Item_func_between($1,$4,$6)); }
2535
	| no_and_expr OR_OR_CONCAT expr	{ $$= or_or_concat(YYTHD, $1,$3); }
2536
	| no_and_expr OR_SYM expr	{ $$= new Item_cond_or($1,$3); }
2537
        | no_and_expr XOR expr		{ $$= new Item_cond_xor($1,$3); }
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	| no_and_expr SOUNDS_SYM LIKE expr
	  {
	    $$= new Item_func_eq(new Item_func_soundex($1),
				 new Item_func_soundex($4));
	  }
	| no_and_expr LIKE simple_expr opt_escape
	  { $$= new Item_func_like($1,$3,$4); }
	| no_and_expr NOT LIKE simple_expr opt_escape
	  { $$= new Item_func_not(new Item_func_like($1,$4,$5)); }
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	| no_and_expr REGEXP expr { $$= new Item_func_regex($1,$3); }
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	| no_and_expr NOT REGEXP expr
	  { $$= new Item_func_not(new Item_func_regex($1,$4)); }
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	| no_and_expr IS NULL_SYM	{ $$= new Item_func_isnull($1); }
	| no_and_expr IS NOT NULL_SYM { $$= new Item_func_isnotnull($1); }
	| no_and_expr EQUAL_SYM expr	{ $$= new Item_func_equal($1,$3); }
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	| no_and_expr comp_op expr %prec EQ { $$= (*$2)(0)->create($1,$3); }
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	| no_and_expr comp_op all_or_any in_subselect %prec EQ
	{
2556
	  all_any_subquery_creator($1, $2, $3, $4);
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	}
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	| no_and_expr SHIFT_LEFT expr  { $$= new Item_func_shift_left($1,$3); }
	| no_and_expr SHIFT_RIGHT expr { $$= new Item_func_shift_right($1,$3); }
	| no_and_expr '+' expr		{ $$= new Item_func_plus($1,$3); }
	| no_and_expr '-' expr		{ $$= new Item_func_minus($1,$3); }
	| no_and_expr '*' expr		{ $$= new Item_func_mul($1,$3); }
	| no_and_expr '/' expr		{ $$= new Item_func_div($1,$3); }
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	| no_and_expr DIV_SYM expr	{ $$= new Item_func_int_div($1,$3); }
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	| no_and_expr '|' expr		{ $$= new Item_func_bit_or($1,$3); }
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        | no_and_expr '^' expr		{ $$= new Item_func_bit_xor($1,$3); }
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	| no_and_expr '&' expr		{ $$= new Item_func_bit_and($1,$3); }
	| no_and_expr '%' expr		{ $$= new Item_func_mod($1,$3); }
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	| no_and_expr MOD_SYM expr	{ $$= new Item_func_mod($1,$3); }
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	| no_and_expr '+' interval_expr interval
	  { $$= new Item_date_add_interval($1,$3,$4,0); }
	| no_and_expr '-' interval_expr interval
	  { $$= new Item_date_add_interval($1,$3,$4,1); }
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	| simple_expr;
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interval_expr:
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         INTERVAL_SYM expr { $$=$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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	    $$= new Item_func_set_collation($1,
					    new Item_string($3.str,
							    $3.length,
2587
                                                            YYTHD->charset()));
2588
	  }
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	| literal
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	| param_marker
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	| '@' ident_or_text SET_VAR expr
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	  {
	    $$= new Item_func_set_user_var($2,$4);
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	    Lex->uncacheable(UNCACHEABLE_RAND);
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	  }
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	| '@' ident_or_text
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	  {
	    $$= new Item_func_get_user_var($2);
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	    Lex->uncacheable(UNCACHEABLE_RAND);
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	  }
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	| '@' '@' opt_var_ident_type ident_or_text opt_component
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	  {
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            if ($4.str && $5.str && check_reserved_words(&$4))
            {
              yyerror(ER(ER_SYNTAX_ERROR));
              YYABORT;
            }
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	    if (!($$= get_system_var(YYTHD, (enum_var_type) $3, $4, $5)))
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	      YYABORT;
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	  }
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	| sum_expr
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	| '+' expr %prec NEG	{ $$= $2; }
	| '-' expr %prec NEG    { $$= new Item_func_neg($2); }
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	| '~' expr %prec NEG	{ $$= new Item_func_bit_neg($2); }
	| NOT expr %prec NEG	{ $$= new Item_func_not($2); }
	| '!' expr %prec NEG	{ $$= new Item_func_not($2); }
	| '(' expr ')'		{ $$= $2; }
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	| '(' expr ',' expr_list ')'
	  {
	    $4->push_front($2);
	    $$= new Item_row(*$4);
	  }
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	| ROW_SYM '(' expr ',' expr_list ')'
2625
	  {
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	    $5->push_front($3);
	    $$= 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 '}'	{ $$= $3; }
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        | MATCH ident_list_arg AGAINST '(' expr fulltext_options ')'
2633
          { $2->push_front($5);
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            Select->add_ftfunc_to_list((Item_func_match*)
                                        ($$=new Item_func_match(*$2,$6))); }
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	| ASCII_SYM '(' expr ')' { $$= new Item_func_ascii($3); }
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	| BINARY expr %prec NEG
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	  {
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	    $$= new Item_func_set_collation($2,new Item_string(binary_keyword,
					    6, &my_charset_latin1));
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	  }
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	| CAST_SYM '(' expr AS cast_type ')'
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	  {
	    $$= create_func_cast($3, $5,
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				 Lex->length ? atoi(Lex->length) : -1,
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				 Lex->charset);
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	  }
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	| CASE_SYM opt_expr WHEN_SYM when_list opt_else END
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	  { $$= new Item_func_case(* $4, $2, $5 ); }
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	| CONVERT_SYM '(' expr ',' cast_type ')'
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	  {
	    $$= create_func_cast($3, $5,
				 Lex->length ? atoi(Lex->length) : -1,
				 Lex->charset);
	  }
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	| CONVERT_SYM '(' expr USING charset_name ')'
	  { $$= 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)
	    {
	      net_printf(Lex->thd, ER_FEATURE_DISABLED,
			 ER(ER_FEATURE_DISABLED),
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			 $1.symbol->group->name,
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	                 $1.symbol->group->needed_define);
	      YYABORT;
	    }
	    $$= ((Item*(*)(void))($1.symbol->create_func))();
	  }
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	| FUNC_ARG1 '(' expr ')'
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	  {
	    if (!$1.symbol->create_func)
	    {
	      net_printf(Lex->thd, ER_FEATURE_DISABLED,
			 ER(ER_FEATURE_DISABLED),
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			 $1.symbol->group->name,
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	                 $1.symbol->group->needed_define);
	      YYABORT;
	    }
	    $$= ((Item*(*)(Item*))($1.symbol->create_func))($3);
	  }
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	| FUNC_ARG2 '(' expr ',' expr ')'
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	  {
	    if (!$1.symbol->create_func)
	    {
	      net_printf(Lex->thd, ER_FEATURE_DISABLED,
			 ER(ER_FEATURE_DISABLED),
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			 $1.symbol->group->name,
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	                 $1.symbol->group->needed_define);
	      YYABORT;
	    }
	    $$= ((Item*(*)(Item*,Item*))($1.symbol->create_func))($3,$5);
	  }
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	| FUNC_ARG3 '(' expr ',' expr ',' expr ')'
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	  {
	    if (!$1.symbol->create_func)
	    {
	      net_printf(Lex->thd, ER_FEATURE_DISABLED,
			 ER(ER_FEATURE_DISABLED),
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			 $1.symbol->group->name,
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	                 $1.symbol->group->needed_define);
	      YYABORT;
	    }
	    $$= ((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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	| 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 ')'
	  { $$= new Item_func_concat(* $3); }
	| CONCAT_WS '(' expr ',' expr_list ')'
	  { $$= new Item_func_concat_ws($3, *$5); }
	| CURDATE optional_braces
2731
	  { $$= new Item_func_curdate_local(); Lex->safe_to_cache_query=0; }
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	| CURTIME optional_braces
2733
	  { $$= new Item_func_curtime_local(); Lex->safe_to_cache_query=0; }
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	| CURTIME '(' expr ')'
2735
	  {
2736
	    $$= new Item_func_curtime_local($3);
2737
	    Lex->safe_to_cache_query=0;
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	  }
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	| CURRENT_USER optional_braces
2740
          { $$= 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 '(' ')'
2746
	  {
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	    $$= new Item_func_database();
2748
            Lex->safe_to_cache_query=0;
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	  }
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	| DATE_SYM '(' expr ')'
2751
	  { $$= new Item_date_typecast($3); }
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	| DAY_SYM '(' expr ')'
	  { $$= new Item_func_dayofmonth($3); }
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	| ELT_FUNC '(' expr ',' expr_list ')'
2755
	  { $5->push_front($3); $$= 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);
2761
	    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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	 { $$= new Item_func_encode($3,$5.str); }
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	| DES_DECRYPT_SYM '(' expr ')'
2769
        { $$= new Item_func_des_decrypt($3); }
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	| DES_DECRYPT_SYM '(' expr ',' expr ')'
2771
        { $$= new Item_func_des_decrypt($3,$5); }
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	| DES_ENCRYPT_SYM '(' expr ')'
2773
        { $$= new Item_func_des_encrypt($3); }
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	| DES_ENCRYPT_SYM '(' expr ',' expr ')'
2775
        { $$= new Item_func_des_encrypt($3,$5); }
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	| EXPORT_SET '(' expr ',' expr ',' expr ')'
		{ $$= 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 ')'
2793
	  { $5->push_front($3); $$= new Item_func_field(*$5); }
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	| geometry_function
	  {
#ifdef HAVE_SPATIAL
	    $$= $1;
#else
	    net_printf(Lex->thd, ER_FEATURE_DISABLED,
	               ER(ER_FEATURE_DISABLED),
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	               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 ')'
2806
	  { $$= new Item_func_get_format($3, $5); }
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	| HOUR_SYM '(' expr ')'
	  { $$= 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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	  { $$= new Item_date_add_interval($4,$1,$2,0); }
	| interval_expr
	  {
            if ($1->type() != Item::ROW_ITEM)
            {
2820
              yyerror(ER(ER_SYNTAX_ERROR));
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              YYABORT;
            }
            $$= new Item_func_interval((Item_row *)$1);
          }
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	| LAST_INSERT_ID '(' ')'
	  {
2827
	    $$= new Item_func_last_insert_id();
2828
	    Lex->safe_to_cache_query= 0;
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	  }
	| LAST_INSERT_ID '(' expr ')'
	  {
2832
	    $$= new Item_func_last_insert_id($3);
2833
	    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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	  { $$= new Item_func_log($3, $5); }
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	| MASTER_POS_WAIT '(' expr ',' expr ')'
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	  {
2851
	    $$= 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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	  { $$= new Item_func_now_local($3); Lex->safe_to_cache_query=0;}
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	| PASSWORD '(' expr ')'
2872
	  {
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	    $$= YYTHD->variables.old_passwords ?
              (Item *) new Item_func_old_password($3) :
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	      (Item *) new Item_func_password($3);
	  }
	| OLD_PASSWORD '(' expr ')'
	  { $$=  new Item_func_old_password($3); }
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	| POSITION_SYM '(' no_in_expr IN_SYM expr ')'
	  { $$ = new Item_func_locate($5,$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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	| 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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	  { $$= new Item_func_add_time($3, $5, 1, 0); }
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	| TRIM '(' expr ')'
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	  { $$= 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
	  { $$= new Item_int((char*) "TRUE",1,1); }
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	| UDA_CHAR_SUM '(' udf_expr_list ')'
	  {
	    if ($3 != NULL)
	      $$ = new Item_sum_udf_str($1, *$3);
	    else
	      $$ = new Item_sum_udf_str($1);
	  }
	| UDA_FLOAT_SUM '(' udf_expr_list ')'
	  {
	    if ($3 != NULL)
	      $$ = new Item_sum_udf_float($1, *$3);
	    else
	      $$ = new Item_sum_udf_float($1);
	  }
	| UDA_INT_SUM '(' udf_expr_list ')'
	  {
	    if ($3 != NULL)
	      $$ = new Item_sum_udf_int($1, *$3);
	    else
	      $$ = new Item_sum_udf_int($1);
	  }
	| UDF_CHAR_FUNC '(' udf_expr_list ')'
	  {
	    if ($3 != NULL)
	      $$ = new Item_func_udf_str($1, *$3);
	    else
	      $$ = new Item_func_udf_str($1);
	  }
	| UDF_FLOAT_FUNC '(' udf_expr_list ')'
	  {
	    if ($3 != NULL)
	      $$ = new Item_func_udf_float($1, *$3);
	    else
	      $$ = new Item_func_udf_float($1);
	  }
	| UDF_INT_FUNC '(' udf_expr_list ')'
	  {
	    if ($3 != NULL)
	      $$ = new Item_func_udf_int($1, *$3);
	    else
	      $$ = new Item_func_udf_int($1);
	  }
	| UNIQUE_USERS '(' text_literal ',' NUM ',' NUM ',' expr_list ')'
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	  {
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            $$= 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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	{ $$=new Item_extract( $3, $5); };
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geometry_function:
	GEOMFROMTEXT '(' expr ')'
	  { $$= 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:
	/* empty */	{ $$= NULL; }
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	| expr_list	{ $$= $1;};
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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 ')'
	  { $$=new Item_sum_min($3); }
	| MAX_SYM '(' in_sum_expr ')'
	  { $$=new Item_sum_max($3); }
	| STD_SYM '(' in_sum_expr ')'
	  { $$=new Item_sum_std($3); }
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	| VARIANCE_SYM '(' in_sum_expr ')'
	  { $$=new Item_sum_variance($3); }
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	| SUM_SYM '(' in_sum_expr ')'
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	  { $$=new Item_sum_sum($3); }
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	| GROUP_CONCAT_SYM '(' opt_distinct
	  { Select->in_sum_expr++; }
	  expr_list opt_gorder_clause
	  opt_gconcat_separator
	 ')'
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	  {
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	    Select->in_sum_expr--;
	    $$=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; }
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	| CHAR_SYM opt_len opt_binary	{ $$=ITEM_CAST_CHAR; }
	| NCHAR_SYM opt_len	{ $$=ITEM_CAST_CHAR; Lex->charset= national_charset_info; }
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	| SIGNED_SYM		{ $$=ITEM_CAST_SIGNED_INT; Lex->charset= NULL; Lex->length= (char*)0; }
	| SIGNED_SYM INT_SYM	{ $$=ITEM_CAST_SIGNED_INT; Lex->charset= NULL; Lex->length= (char*)0; }
	| UNSIGNED		{ $$=ITEM_CAST_UNSIGNED_INT; Lex->charset= NULL; Lex->length= (char*)0; }
	| UNSIGNED INT_SYM	{ $$=ITEM_CAST_UNSIGNED_INT; Lex->charset= NULL; Lex->length= (char*)0; }
	| DATE_SYM		{ $$=ITEM_CAST_DATE; Lex->charset= NULL; Lex->length= (char*)0; }
	| TIME_SYM		{ $$=ITEM_CAST_TIME; Lex->charset= NULL; Lex->length= (char*)0; }
	| DATETIME		{ $$=ITEM_CAST_DATETIME; Lex->charset= NULL; Lex->length= (char*)0; }
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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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	{ $$= Select->when_list.pop(); };
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when_list2:
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	expr THEN_SYM expr
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	  {
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	    SELECT_LEX *sel=Select;
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	    sel->when_list.head()->push_back($1);
	    sel->when_list.head()->push_back($3);
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	}
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	| when_list2 WHEN_SYM expr THEN_SYM expr
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	  {
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	    SELECT_LEX *sel=Select;
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	    sel->when_list.head()->push_back($3);
	    sel->when_list.head()->push_back($5);
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	  };
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join_table_list:
	'(' join_table_list ')'	{ $$=$2; }
	| join_table		{ $$=$1; }
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	| join_table_list ',' join_table_list { $$=$3; }
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	| join_table_list normal_join join_table_list { $$=$3; }
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	| join_table_list STRAIGHT_JOIN join_table_list
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	  { $$=$3 ; $1->next->straight=1; }
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	| join_table_list normal_join join_table_list ON expr
	  { add_join_on($3,$5); $$=$3; }
	| join_table_list normal_join join_table_list
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	  USING
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	  {
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	    SELECT_LEX *sel= Select;
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	    sel->db1=$1->db; sel->table1=$1->alias;
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	    sel->db2=$3->db; sel->table2=$3->alias;
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	  }
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	  '(' using_list ')'
	  { add_join_on($3,$7); $$=$3; }

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	| join_table_list LEFT opt_outer JOIN_SYM join_table_list ON expr
3250
	  { add_join_on($5,$7); $5->outer_join|=JOIN_TYPE_LEFT; $$=$5; }
3251
	| join_table_list LEFT opt_outer JOIN_SYM join_table_list
3252
	  {
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3253
	    SELECT_LEX *sel= Select;
3254 3255
	    sel->db1=$1->db; sel->table1=$1->alias;
	    sel->db2=$5->db; sel->table2=$5->alias;
3256
	  }
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3257
	  USING '(' using_list ')'
3258
	  { add_join_on($5,$9); $5->outer_join|=JOIN_TYPE_LEFT; $$=$5; }
3259
	| join_table_list NATURAL LEFT opt_outer JOIN_SYM join_table_list
3260 3261 3262 3263 3264
	  {
	    add_join_natural($1,$1->next);
	    $1->next->outer_join|=JOIN_TYPE_LEFT;
	    $$=$6;
	  }
3265
	| join_table_list RIGHT opt_outer JOIN_SYM join_table_list ON expr
3266
	  { add_join_on($1,$7); $1->outer_join|=JOIN_TYPE_RIGHT; $$=$5; }
3267
	| join_table_list RIGHT opt_outer JOIN_SYM join_table_list
3268
	  {
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3269
	    SELECT_LEX *sel= Select;
3270 3271
	    sel->db1=$1->db; sel->table1=$1->alias;
	    sel->db2=$5->db; sel->table2=$5->alias;
3272
	  }
3273
	  USING '(' using_list ')'
3274
	  { add_join_on($1,$9); $1->outer_join|=JOIN_TYPE_RIGHT; $$=$5; }
3275
	| join_table_list NATURAL RIGHT opt_outer JOIN_SYM join_table_list
3276 3277 3278 3279 3280
	  {
	    add_join_natural($1->next,$1);
	    $1->outer_join|=JOIN_TYPE_RIGHT;
	    $$=$6;
	  }
3281
	| join_table_list NATURAL JOIN_SYM join_table_list
3282
	  { add_join_natural($1,$1->next); $$=$4; };
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3283 3284

normal_join:
3285 3286 3287 3288
	JOIN_SYM		{}
	| INNER_SYM JOIN_SYM	{}
	| CROSS JOIN_SYM	{}
	;
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3289 3290

join_table:
3291
	{
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3292
	  SELECT_LEX *sel= Select;
3293
	  sel->use_index_ptr=sel->ignore_index_ptr=0;
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3294
	  sel->table_join_options= 0;
3295
	}
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3296
        table_ident opt_table_alias opt_key_definition
3297
	{
3298
	  LEX *lex= Lex;
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3299
	  SELECT_LEX *sel= lex->current_select;
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3300
	  if (!($$= sel->add_table_to_list(lex->thd, $2, $3,
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3301
					   sel->get_table_join_options(),
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3302
					   lex->lock_option,
3303 3304
					   sel->get_use_index(),
					   sel->get_ignore_index())))
3305
	    YYABORT;
3306
	}
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3307
	| '{' ident join_table LEFT OUTER JOIN_SYM join_table ON expr '}'
3308
	  { add_join_on($7,$9); $7->outer_join|=JOIN_TYPE_LEFT; $$=$7; }
3309
        | '(' SELECT_SYM select_derived ')' opt_table_alias
3310 3311
	{
	  LEX *lex=Lex;
3312 3313 3314
	  SELECT_LEX_UNIT *unit= lex->current_select->master_unit();
	  lex->current_select= unit->outer_select();
	  if (!($$= lex->current_select->
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3315
                add_table_to_list(lex->thd, new Table_ident(unit), $5, 0,
3316
				  TL_READ,(List<String> *)0,
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3317 3318
	                          (List<String> *)0)))

3319
	    YYABORT;
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3320
	};
3321

3322
select_derived:
3323
        {
3324
	  LEX *lex= Lex;
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3325
	  lex->derived_tables= 1;
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3326 3327 3328
	  if (((int)lex->sql_command >= (int)SQLCOM_HA_OPEN &&
	       lex->sql_command <= (int)SQLCOM_HA_READ) ||
	       lex->sql_command == (int)SQLCOM_KILL)
3329 3330
	  {
	    yyerror(ER(ER_SYNTAX_ERROR));
3331 3332
	    YYABORT;
	  }
3333
	  if (lex->current_select->linkage == GLOBAL_OPTIONS_TYPE ||
3334
              mysql_new_select(lex, 1))
3335 3336
	    YYABORT;
	  mysql_init_select(lex);
3337
	  lex->current_select->linkage= DERIVED_TABLE_TYPE;
3338 3339 3340 3341 3342
	  lex->current_select->parsing_place= SELECT_LEX_NODE::SELECT_LIST;
	}
        select_options select_item_list
	{
	  Select->parsing_place= SELECT_LEX_NODE::NO_MATTER;
3343
	}
3344
	opt_select_from union_opt
3345
        ;
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3346 3347 3348

opt_outer:
	/* empty */	{}
3349
	| OUTER		{};
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3350 3351 3352 3353

opt_key_definition:
	/* empty */	{}
	| USE_SYM    key_usage_list
3354
          {
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3355
	    SELECT_LEX *sel= Select;
3356 3357 3358
	    sel->use_index= *$2;
	    sel->use_index_ptr= &sel->use_index;
	  }
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	| FORCE_SYM key_usage_list
          {
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3361
	    SELECT_LEX *sel= Select;
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3362 3363 3364 3365
	    sel->use_index= *$2;
	    sel->use_index_ptr= &sel->use_index;
	    sel->table_join_options|= TL_OPTION_FORCE_INDEX;
	  }
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3366
	| IGNORE_SYM key_usage_list
3367
	  {
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3368
	    SELECT_LEX *sel= Select;
3369 3370
	    sel->ignore_index= *$2;
	    sel->ignore_index_ptr= &sel->ignore_index;
3371
	  };
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3372 3373

key_usage_list:
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3374
	key_or_index { Select->interval_list.empty(); }
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        '(' key_list_or_empty ')'
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3376
        { $$= &Select->interval_list; }
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3377 3378 3379 3380 3381 3382
	;

key_list_or_empty:
	/* empty */ 		{}
	| key_usage_list2	{}
	;
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3383 3384 3385

key_usage_list2:
	key_usage_list2 ',' ident
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3386
        { Select->
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3387
	    interval_list.push_back(new (&YYTHD->mem_root) String((const char*) $3.str, $3.length,
3388
				    system_charset_info)); }
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3389
	| ident
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3390
        { Select->
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3391
	    interval_list.push_back(new (&YYTHD->mem_root) String((const char*) $1.str, $1.length,
3392
				    system_charset_info)); }
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	| PRIMARY_SYM
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3394
        { Select->
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3395
	    interval_list.push_back(new (&YYTHD->mem_root) String("PRIMARY", 7,
3396
				    system_charset_info)); };
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3397 3398 3399

using_list:
	ident
3400
	  {
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3401
	    SELECT_LEX *sel= Select;
3402 3403 3404 3405
	    if (!($$= new Item_func_eq(new Item_field(sel->db1, sel->table1,
						      $1.str),
				       new Item_field(sel->db2, sel->table2,
						      $1.str))))
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3406 3407 3408 3409
	      YYABORT;
	  }
	| using_list ',' ident
	  {
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3410
	    SELECT_LEX *sel= Select;
3411
	    if (!($$= 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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3412
	      YYABORT;
3413
	  };
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3414 3415 3416

interval:
	 DAY_HOUR_SYM		{ $$=INTERVAL_DAY_HOUR; }
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3417
	| DAY_MICROSECOND_SYM	{ $$=INTERVAL_DAY_MICROSECOND; }
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	| DAY_MINUTE_SYM	{ $$=INTERVAL_DAY_MINUTE; }
	| DAY_SECOND_SYM	{ $$=INTERVAL_DAY_SECOND; }
	| DAY_SYM		{ $$=INTERVAL_DAY; }
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3421
	| HOUR_MICROSECOND_SYM	{ $$=INTERVAL_HOUR_MICROSECOND; }
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3422 3423 3424
	| HOUR_MINUTE_SYM	{ $$=INTERVAL_HOUR_MINUTE; }
	| HOUR_SECOND_SYM	{ $$=INTERVAL_HOUR_SECOND; }
	| HOUR_SYM		{ $$=INTERVAL_HOUR; }
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	| MICROSECOND_SYM	{ $$=INTERVAL_MICROSECOND; }
	| MINUTE_MICROSECOND_SYM	{ $$=INTERVAL_MINUTE_MICROSECOND; }
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	| MINUTE_SECOND_SYM	{ $$=INTERVAL_MINUTE_SECOND; }
	| MINUTE_SYM		{ $$=INTERVAL_MINUTE; }
	| MONTH_SYM		{ $$=INTERVAL_MONTH; }
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3430
	| SECOND_MICROSECOND_SYM	{ $$=INTERVAL_SECOND_MICROSECOND; }
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3431 3432
	| SECOND_SYM		{ $$=INTERVAL_SECOND; }
	| YEAR_MONTH_SYM	{ $$=INTERVAL_YEAR_MONTH; }
3433
	| YEAR_SYM		{ $$=INTERVAL_YEAR; };
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3434

3435 3436 3437 3438
date_time_type:
	DATE_SYM		{$$=TIMESTAMP_DATE;}
	| TIME_SYM		{$$=TIMESTAMP_TIME;}
	| DATETIME		{$$=TIMESTAMP_DATETIME;};
3439

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3440 3441 3442
table_alias:
	/* empty */
	| AS
3443
	| EQ;
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3444 3445 3446 3447

opt_table_alias:
	/* empty */		{ $$=0; }
	| table_alias ident
3448
	  { $$= (LEX_STRING*) sql_memdup(&$2,sizeof(LEX_STRING)); };
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3449

3450 3451 3452 3453
opt_all:
	/* empty */
	| ALL
	;
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3454 3455

where_clause:
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3456
	/* empty */  { Select->where= 0; }
3457 3458
	| WHERE expr
	  {
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3459
	    Select->where= $2;
3460 3461 3462
	    if ($2)
	      $2->top_level_item();
	  }
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3463
 	;
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3464 3465 3466

having_clause:
	/* empty */
3467 3468
	| HAVING
	  {
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3469
	    Select->parsing_place= SELECT_LEX_NODE::IN_HAVING;
3470 3471
          }
	  expr
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3472
	  {
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3473
	    SELECT_LEX *sel= Select;
3474 3475
	    sel->having= $3;
	    sel->parsing_place= SELECT_LEX_NODE::NO_MATTER;
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3476 3477 3478
	    if ($3)
	      $3->top_level_item();
	  }
3479
	;
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3480 3481

opt_escape:
3482
	ESCAPE_SYM TEXT_STRING_literal	{ $$= $2.str; }
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bar@bar.mysql.r18.ru committed
3483
	| /* empty */			{ $$= (char*) "\\"; };
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/*
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3487
   group by statement in select
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3488 3489 3490 3491
*/

group_clause:
	/* empty */
3492
	| GROUP BY group_list olap_opt;
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3493 3494

group_list:
3495
	group_list ',' order_ident order_dir
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3496
	  { if (add_group_to_list(YYTHD, $3,(bool) $4)) YYABORT; }
3497
	| order_ident order_dir
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monty@mashka.mysql.fi committed
3498
	  { if (add_group_to_list(YYTHD, $1,(bool) $2)) YYABORT; };
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3499

3500 3501
olap_opt:
	/* empty */ {}
3502
	| WITH CUBE_SYM
3503
          {
3504
	    LEX *lex=Lex;
3505 3506 3507 3508 3509 3510
	    if (lex->current_select->linkage == GLOBAL_OPTIONS_TYPE)
	    {
	      net_printf(lex->thd, ER_WRONG_USAGE, "WITH CUBE",
		       "global union parameters");
	      YYABORT;
	    }
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3511
	    lex->current_select->olap= CUBE_TYPE;
3512
	    net_printf(lex->thd, ER_NOT_SUPPORTED_YET, "CUBE");
3513
	    YYABORT;	/* To be deleted in 5.1 */
3514
	  }
3515
	| WITH ROLLUP_SYM
3516
          {
3517 3518 3519 3520 3521 3522 3523
	    LEX *lex= Lex;
	    if (lex->current_select->linkage == GLOBAL_OPTIONS_TYPE)
	    {
	      net_printf(lex->thd, ER_WRONG_USAGE, "WITH ROLLUP",
		       "global union parameters");
	      YYABORT;
	    }
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3524
	    lex->current_select->olap= ROLLUP_TYPE;
3525
	  }
3526
	;
3527

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3528
/*
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3529
   Order by statement in select
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3530 3531
*/

3532
opt_order_clause:
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3533
	/* empty */
3534
	| order_clause;
3535 3536

order_clause:
3537 3538
	ORDER_SYM BY
        {
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3539
	  LEX *lex=Lex;
3540
	  if (lex->current_select->linkage != GLOBAL_OPTIONS_TYPE &&
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3541
	      lex->current_select->olap !=
3542
	      UNSPECIFIED_OLAP_TYPE)
3543
	  {
3544
	    net_printf(lex->thd, ER_WRONG_USAGE,
3545 3546 3547 3548
		       "CUBE/ROLLUP",
		       "ORDER BY");
	    YYABORT;
	  }
3549
	} order_list;
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3550 3551 3552

order_list:
	order_list ',' order_ident order_dir
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monty@mashka.mysql.fi committed
3553
	  { if (add_order_to_list(YYTHD, $3,(bool) $4)) YYABORT; }
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3554
	| order_ident order_dir
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monty@mashka.mysql.fi committed
3555
	  { if (add_order_to_list(YYTHD, $1,(bool) $2)) YYABORT; };
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3556 3557 3558

order_dir:
	/* empty */ { $$ =  1; }
3559
	| ASC  { $$ =1; }
3560
	| DESC { $$ =0; };
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bk@work.mysql.com committed
3561 3562


3563 3564 3565
opt_limit_clause_init:
	/* empty */
	{
3566 3567
	  LEX *lex= Lex;
	  SELECT_LEX *sel= lex->current_select;
3568
          sel->offset_limit= 0L;
3569 3570 3571
          sel->select_limit= (&lex->select_lex == sel) ?
	    Lex->thd->variables.select_limit :	/* primary SELECT */
	    HA_POS_ERROR;			/* subquery */
3572
	}
3573 3574 3575
	| limit_clause {}
	;

3576 3577 3578 3579 3580
opt_limit_clause:
	/* empty */	{}
	| limit_clause	{}
	;

3581
limit_clause:
3582
	LIMIT limit_options {}
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monty@mashka.mysql.fi committed
3583
	;
3584 3585 3586

limit_options:
	ULONG_NUM
3587
	  {
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3588
            SELECT_LEX *sel= Select;
3589 3590 3591 3592 3593
            sel->select_limit= $1;
            sel->offset_limit= 0L;
	  }
	| ULONG_NUM ',' ULONG_NUM
	  {
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3594
	    SELECT_LEX *sel= Select;
3595 3596
	    sel->select_limit= $3;
	    sel->offset_limit= $1;
3597
	  }
3598
	| ULONG_NUM OFFSET_SYM ULONG_NUM
3599
	  {
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3600
	    SELECT_LEX *sel= Select;
3601 3602 3603 3604
	    sel->select_limit= $1;
	    sel->offset_limit= $3;
	  }
	;
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3605 3606 3607 3608 3609


delete_limit_clause:
	/* empty */
	{
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3610
	  LEX *lex=Lex;
3611
	  lex->current_select->select_limit= HA_POS_ERROR;
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3612
	}
3613
	| LIMIT ulonglong_num
3614
	{ Select->select_limit= (ha_rows) $2; };
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3615 3616

ULONG_NUM:
3617
	NUM	    { $$= strtoul($1.str,NULL,10); }
3618
	| LONG_NUM  { $$= (ulong) strtoll($1.str,NULL,10); }
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monty@hundin.mysql.fi committed
3619
	| ULONGLONG_NUM { $$= (ulong) strtoull($1.str,NULL,10); }
3620
	| REAL_NUM  { $$= strtoul($1.str,NULL,10); }
3621
	| FLOAT_NUM { $$= strtoul($1.str,NULL,10); };
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bk@work.mysql.com committed
3622

3623
ulonglong_num:
3624
	NUM	    { $$= (ulonglong) strtoul($1.str,NULL,10); }
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monty@hundin.mysql.fi committed
3625
	| ULONGLONG_NUM { $$= strtoull($1.str,NULL,10); }
3626
	| LONG_NUM  { $$= (ulonglong) strtoll($1.str,NULL,10); }
3627
	| REAL_NUM  { $$= strtoull($1.str,NULL,10); }
3628
	| FLOAT_NUM { $$= strtoull($1.str,NULL,10); };
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3629 3630 3631 3632 3633 3634

procedure_clause:
	/* empty */
	| PROCEDURE ident			/* Procedure name */
	  {
	    LEX *lex=Lex;
3635 3636 3637 3638 3639 3640 3641
	    if (&lex->select_lex != lex->current_select)
	    {
	      net_printf(lex->thd, ER_WRONG_USAGE,
			  "PROCEDURE",
			  "subquery");
	      YYABORT;
	    }
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3642 3643 3644
	    lex->proc_list.elements=0;
	    lex->proc_list.first=0;
	    lex->proc_list.next= (byte**) &lex->proc_list.first;
3645
	    if (add_proc_to_list(lex->thd, new Item_field(NULL,NULL,$2.str)))
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3646
	      YYABORT;
3647
	    Lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
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3648
	  }
3649
	  '(' procedure_list ')';
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3650 3651 3652 3653


procedure_list:
	/* empty */ {}
3654
	| procedure_list2 {};
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3655 3656 3657

procedure_list2:
	procedure_list2 ',' procedure_item
3658
	| procedure_item;
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3659 3660 3661 3662

procedure_item:
	  remember_name expr
	  {
3663 3664
	    LEX *lex= Lex;
	    if (add_proc_to_list(lex->thd, $2))
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3665 3666
	      YYABORT;
	    if (!$2->name)
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3667
	      $2->set_name($1,(uint) ((char*) lex->tok_end - $1), YYTHD->charset());
3668 3669 3670 3671 3672 3673
	  }
          ;


select_var_list_init:
	   {
3674 3675
             LEX *lex=Lex;
	     if (!lex->describe && (!(lex->result= new select_dumpvar())))
3676 3677
	        YYABORT;
	   }
3678
	   select_var_list
3679
	   {}
3680
           ;
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3681

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3682
select_var_list:
3683 3684 3685 3686 3687
	   select_var_list ',' select_var_ident
	   | select_var_ident {}
           ;

select_var_ident:  '@' ident_or_text
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3688
           {
3689
             LEX *lex=Lex;
3690
	     if (lex->result && ((select_dumpvar *)lex->result)->var_list.push_back((LEX_STRING*) sql_memdup(&$2,sizeof(LEX_STRING))))
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3691 3692
	       YYABORT;
	   }
3693
           ;
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3694

3695
into:
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3696
        INTO OUTFILE TEXT_STRING_sys
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3697
	{
3698
	  LEX *lex=Lex;
3699 3700
	  if (!lex->describe)
	  {
3701
	    lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
3702 3703 3704 3705 3706
	    if (!(lex->exchange= new sql_exchange($3.str,0)))
	      YYABORT;
	    if (!(lex->result= new select_export(lex->exchange)))
	      YYABORT;
	  }
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3707 3708
	}
	opt_field_term opt_line_term
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3709
	| INTO DUMPFILE TEXT_STRING_sys
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3710
	{
3711
	  LEX *lex=Lex;
3712 3713
	  if (!lex->describe)
	  {
3714
	    lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
3715 3716 3717 3718 3719
	    if (!(lex->exchange= new sql_exchange($3.str,1)))
	      YYABORT;
	    if (!(lex->result= new select_dump(lex->exchange)))
	      YYABORT;
	  }
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3720
	}
3721
        | INTO select_var_list_init
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3722
	{
3723
	  Lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
3724 3725
	}
        ;
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3726

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3727 3728 3729
/*
  DO statement
*/
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3730

3731
do:	DO_SYM
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3732 3733 3734 3735 3736 3737
	{
	  LEX *lex=Lex;
	  lex->sql_command = SQLCOM_DO;
	  if (!(lex->insert_list = new List_item))
	    YYABORT;
	}
3738 3739 3740 3741
	values
	{}
	;

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3742
/*
3743
  Drop : delete tables or index or user
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3744 3745 3746
*/

drop:
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3747
	DROP opt_temporary table_or_tables if_exists table_list opt_restrict
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3748
	{
3749 3750
	  LEX *lex=Lex;
	  lex->sql_command = SQLCOM_DROP_TABLE;
3751 3752
	  lex->drop_temporary= $2;
	  lex->drop_if_exists= $4;
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3753 3754 3755
	}
	| DROP INDEX ident ON table_ident {}
	  {
3756 3757 3758 3759
	     LEX *lex=Lex;
	     lex->sql_command= SQLCOM_DROP_INDEX;
	     lex->drop_list.empty();
	     lex->drop_list.push_back(new Alter_drop(Alter_drop::KEY,
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3760
						     $3.str));
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3761 3762
	     if (!lex->current_select->add_table_to_list(lex->thd, $5, NULL,
							TL_OPTION_UPDATING))
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3763 3764 3765 3766
	      YYABORT;
	  }
	| DROP DATABASE if_exists ident
	  {
3767 3768 3769 3770
	    LEX *lex=Lex;
	    lex->sql_command= SQLCOM_DROP_DB;
	    lex->drop_if_exists=$3;
	    lex->name=$4.str;
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3771
	 }
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3772
	| DROP UDF_SYM IDENT_sys
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3773
	  {
3774 3775
	    LEX *lex=Lex;
	    lex->sql_command = SQLCOM_DROP_FUNCTION;
3776
	    lex->udf.name = $3;
3777 3778 3779 3780 3781 3782
	  }
	| DROP USER
	  {
	    LEX *lex=Lex;
	    lex->sql_command = SQLCOM_DROP_USER;
	    lex->users_list.empty();
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3783
	  }
3784 3785 3786
	  user_list
	  {}
	  ;
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3787 3788 3789


table_list:
3790
	table_name
3791
	| table_list ',' table_name;
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3792

3793
table_name:
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3794
	table_ident
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3795 3796 3797 3798 3799
	{
	  if (!Select->add_table_to_list(YYTHD, $1, NULL, TL_OPTION_UPDATING))
	    YYABORT;
	}
	;
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3800 3801

if_exists:
3802
	/* empty */ { $$= 0; }
3803 3804
	| IF EXISTS { $$= 1; }
	;
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3805

3806 3807 3808 3809
opt_temporary:
	/* empty */ { $$= 0; }
	| TEMPORARY { $$= 1; }
	;
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3810 3811 3812 3813 3814
/*
** Insert : add new data to table
*/

insert:
3815 3816 3817 3818 3819 3820
	INSERT
	{
	  LEX *lex= Lex;
	  lex->sql_command = SQLCOM_INSERT;
	  /* for subselects */
          lex->lock_option= (using_update_log) ? TL_READ_NO_INSERT : TL_READ;
3821
	  lex->select_lex.resolve_mode= SELECT_LEX::INSERT_MODE;
3822
	} insert_lock_option
3823
	opt_ignore insert2
3824
	{
3825
	  Select->set_lock_for_tables($3);
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3826
	  Lex->current_select= &Lex->select_lex;
3827
	}
3828
	insert_field_spec opt_insert_update
3829
	{}
3830
	;
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3831 3832

replace:
3833 3834
	REPLACE
	{
3835
	  LEX *lex=Lex;
3836 3837
	  lex->sql_command = SQLCOM_REPLACE;
	  lex->duplicates= DUP_REPLACE;
3838
	  lex->select_lex.resolve_mode= SELECT_LEX::INSERT_MODE;
3839
	}
3840 3841
	replace_lock_option insert2
	{
3842
	  Select->set_lock_for_tables($3);
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3843
	  Lex->current_select= &Lex->select_lex;
3844 3845
	}
	insert_field_spec
3846
	{}
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3847
	{}
3848
	;
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3849 3850

insert_lock_option:
3851 3852 3853 3854
	/* empty */	{ $$= TL_WRITE_CONCURRENT_INSERT; }
	| LOW_PRIORITY	{ $$= TL_WRITE_LOW_PRIORITY; }
	| DELAYED_SYM	{ $$= TL_WRITE_DELAYED; }
	| HIGH_PRIORITY { $$= TL_WRITE; }
3855
	;
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3856 3857

replace_lock_option:
3858 3859
	opt_low_priority { $$= $1; }
	| DELAYED_SYM	 { $$= TL_WRITE_DELAYED; };
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3860 3861 3862

insert2:
	INTO insert_table {}
3863
	| insert_table {};
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3864 3865

insert_table:
3866
	table_name
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3867
	{
3868 3869 3870 3871
	  LEX *lex=Lex;
	  lex->field_list.empty();
	  lex->many_values.empty();
	  lex->insert_list=0;
3872
	};
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3873 3874

insert_field_spec:
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3875 3876 3877
	insert_values {}
	| '(' ')' insert_values {}
	| '(' fields ')' insert_values {}
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3878 3879
	| SET
	  {
3880 3881 3882
	    LEX *lex=Lex;
	    if (!(lex->insert_list = new List_item) ||
		lex->many_values.push_back(lex->insert_list))
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3883 3884
	      YYABORT;
	   }
3885
	   ident_eq_list;
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3886 3887 3888 3889

opt_field_spec:
	/* empty */	  { }
	| '(' fields ')'  { }
3890
	| '(' ')'	  { };
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3891 3892 3893

fields:
	fields ',' insert_ident { Lex->field_list.push_back($3); }
3894
	| insert_ident		{ Lex->field_list.push_back($1); };
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3895 3896 3897

insert_values:
	VALUES	values_list  {}
3898
	| VALUE_SYM values_list  {}
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3899 3900
	|     create_select     { Select->set_braces(0);} union_clause {}
	| '(' create_select ')' { Select->set_braces(1);} union_opt {}
3901
        ;
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3902 3903 3904

values_list:
	values_list ','  no_braces
3905
	| no_braces;
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3906 3907 3908 3909

ident_eq_list:
	ident_eq_list ',' ident_eq_value
	|
3910
	ident_eq_value;
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3911 3912

ident_eq_value:
3913
	simple_ident equal expr_or_default
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3914
	 {
3915 3916 3917
	  LEX *lex=Lex;
	  if (lex->field_list.push_back($1) ||
	      lex->insert_list->push_back($3))
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3918
	    YYABORT;
3919
	 };
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3920 3921

equal:	EQ		{}
3922 3923 3924 3925 3926 3927 3928
	| SET_VAR	{}
	;

opt_equal:
	/* empty */	{}
	| equal		{}
	;
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3929 3930 3931 3932 3933 3934 3935 3936 3937

no_braces:
	 '('
	 {
	    if (!(Lex->insert_list = new List_item))
	      YYABORT;
	 }
	 opt_values ')'
	 {
3938 3939
	  LEX *lex=Lex;
	  if (lex->many_values.push_back(lex->insert_list))
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3940
	    YYABORT;
3941
	 };
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3942 3943 3944

opt_values:
	/* empty */ {}
3945
	| values;
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3946 3947

values:
3948
	values ','  expr_or_default
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3949 3950 3951 3952
	{
	  if (Lex->insert_list->push_back($3))
	    YYABORT;
	}
3953 3954 3955 3956 3957 3958 3959 3960
	| expr_or_default
	  {
	    if (Lex->insert_list->push_back($1))
	      YYABORT;
	  }
	;

expr_or_default:
3961
	expr	  { $$= $1;}
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SCRUM  
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3962
	| DEFAULT {$$= new Item_default_value(); }
3963
	;
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3964

3965 3966
opt_insert_update:
        /* empty */
3967
        | ON DUPLICATE_SYM
3968 3969 3970 3971 3972
          { /* for simplisity, let's forget about
               INSERT ... SELECT ... UPDATE
               for a moment */
	    if (Lex->sql_command != SQLCOM_INSERT)
            {
3973
	      yyerror(ER(ER_SYNTAX_ERROR));
3974 3975 3976
              YYABORT;
            }
          }
3977
          KEY_SYM UPDATE_SYM update_list
3978 3979
        ;

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3980 3981 3982
/* Update rows in a table */

update:
3983 3984
	UPDATE_SYM
	{
3985
	  LEX *lex= Lex;
3986
	  mysql_init_select(lex);
3987
          lex->sql_command= SQLCOM_UPDATE;
3988
	  lex->lock_option= TL_UNLOCK; 	/* Will be set later */
3989
        }
3990 3991 3992
        opt_low_priority opt_ignore join_table_list
	SET update_list where_clause opt_order_clause delete_limit_clause
	{
3993
	  LEX *lex= Lex;
3994
	  Select->set_lock_for_tables($3);
3995
          if (lex->select_lex.table_list.elements > 1)
3996
            lex->sql_command= SQLCOM_UPDATE_MULTI;
3997 3998 3999 4000 4001 4002 4003
	  else if (lex->select_lex.get_table_list()->derived)
	  {
	    /* it is single table update and it is update of derived table */
	    net_printf(lex->thd, ER_NON_UPDATABLE_TABLE,
		       lex->select_lex.get_table_list()->alias, "UPDATE");
	    YYABORT;
	  }
4004 4005
	}
	;
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4006 4007

update_list:
hf@deer.mysql.r18.ru's avatar
SCRUM  
hf@deer.mysql.r18.ru committed
4008
	update_list ',' simple_ident equal expr_or_default
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4009
	{
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4010
	  if (add_item_to_list(YYTHD, $3) || add_value_to_list(YYTHD, $5))
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4011 4012
	    YYABORT;
	}
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SCRUM  
hf@deer.mysql.r18.ru committed
4013
	| simple_ident equal expr_or_default
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bk@work.mysql.com committed
4014
	  {
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monty@mashka.mysql.fi committed
4015
	    if (add_item_to_list(YYTHD, $1) || add_value_to_list(YYTHD, $3))
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bk@work.mysql.com committed
4016
	      YYABORT;
4017
	  };
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bk@work.mysql.com committed
4018 4019

opt_low_priority:
4020
	/* empty */	{ $$= YYTHD->update_lock_default; }
4021
	| LOW_PRIORITY	{ $$= TL_WRITE_LOW_PRIORITY; };
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bk@work.mysql.com committed
4022 4023 4024 4025

/* Delete rows from a table */

delete:
4026
	DELETE_SYM
4027
	{
4028 4029
	  LEX *lex= Lex;
	  lex->sql_command= SQLCOM_DELETE;
4030
	  lex->lock_option= lex->thd->update_lock_default;
4031
	  lex->select_lex.init_order();
4032
	}
4033 4034
	opt_delete_options single_multi {}
	;
4035 4036

single_multi:
4037 4038
 	FROM table_ident
	{
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monty@mashka.mysql.fi committed
4039 4040
	  if (!Select->add_table_to_list(YYTHD, $2, NULL, TL_OPTION_UPDATING,
					 Lex->lock_option))
4041 4042 4043
	    YYABORT;
	}
	where_clause opt_order_clause
4044
	delete_limit_clause {}
4045
	| table_wild_list
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monty@hundin.mysql.fi committed
4046
	  { mysql_init_multi_delete(Lex); }
4047
          FROM join_table_list where_clause
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monty@hundin.mysql.fi committed
4048 4049
	| FROM table_wild_list
	  { mysql_init_multi_delete(Lex); }
4050 4051 4052
	  USING join_table_list where_clause
	  {}
	;
4053 4054 4055

table_wild_list:
	  table_wild_one {}
4056
	  | table_wild_list ',' table_wild_one {};
4057 4058

table_wild_one:
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4059
	ident opt_wild opt_table_alias
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monty@mashka.mysql.fi committed
4060
	{
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4061 4062
	  if (!Select->add_table_to_list(YYTHD, new Table_ident($1), $3,
					 TL_OPTION_UPDATING, Lex->lock_option))
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monty@mashka.mysql.fi committed
4063 4064
	    YYABORT;
        }
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4065
	| ident '.' ident opt_wild opt_table_alias
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monty@mashka.mysql.fi committed
4066
	  {
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monty@narttu.mysql.fi committed
4067 4068
	    if (!Select->add_table_to_list(YYTHD,
					   new Table_ident(YYTHD, $1, $3, 0),
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monty@mashka.mysql.fi committed
4069 4070
					   $5, TL_OPTION_UPDATING,
					   Lex->lock_option))
4071
	      YYABORT;
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monty@mashka.mysql.fi committed
4072
	  }
4073
	;
4074 4075

opt_wild:
4076
	/* empty */	{}
4077
	| '.' '*'	{};
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4078 4079


4080
opt_delete_options:
4081
	/* empty */	{}
4082
	| opt_delete_option opt_delete_options {};
4083 4084

opt_delete_option:
4085
	QUICK		{ Select->options|= OPTION_QUICK; }
4086 4087
	| LOW_PRIORITY	{ Lex->lock_option= TL_WRITE_LOW_PRIORITY; }
	| IGNORE_SYM	{ Lex->duplicates= DUP_IGNORE; };
4088

4089
truncate:
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serg@serg.mysql.com committed
4090
	TRUNCATE_SYM opt_table_sym table_name
4091
	{
4092
	  LEX* lex= Lex;
4093
	  lex->sql_command= SQLCOM_TRUNCATE;
4094
	  lex->select_lex.options= 0;
4095
	  lex->select_lex.init_order();
4096 4097
	}
	;
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opt_table_sym:
	/* empty */
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	| TABLE_SYM;
4102

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/* Show things */

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show:	SHOW
	{
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	  LEX *lex=Lex;
	  lex->wild=0;
	  bzero((char*) &lex->create_info,sizeof(lex->create_info));
	}
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	show_param
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	{}
	;
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show_param:
	DATABASES wild
	  { Lex->sql_command= SQLCOM_SHOW_DATABASES; }
	| TABLES opt_db wild
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	  {
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	    LEX *lex= Lex;
4121
	    lex->sql_command= SQLCOM_SHOW_TABLES;
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	    lex->select_lex.db= $2;
	    lex->select_lex.options= 0;
4124
	   }
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	| TABLE_SYM STATUS_SYM opt_db wild
4126
	  {
4127
	    LEX *lex= Lex;
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	    lex->sql_command= SQLCOM_SHOW_TABLES;
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	    lex->select_lex.options|= SELECT_DESCRIBE;
	    lex->select_lex.db= $3;
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	  }
4132
	| OPEN_SYM TABLES opt_db wild
4133
	  {
4134
	    LEX *lex= Lex;
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	    lex->sql_command= SQLCOM_SHOW_OPEN_TABLES;
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	    lex->select_lex.db= $3;
	    lex->select_lex.options= 0;
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	  }
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	| ENGINE_SYM storage_engines 
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	  { Lex->create_info.db_type= $2; }
	  show_engine_param
4142
	| opt_full COLUMNS from_or_in table_ident opt_db wild
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	  {
	    Lex->sql_command= SQLCOM_SHOW_FIELDS;
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	    if ($5)
	      $4->change_db($5);
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	    if (!Select->add_table_to_list(YYTHD, $4, NULL, 0))
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	      YYABORT;
	  }
4150
        | 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;
4158
	    Lex->mi.server_id = $16;
4159
          }
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        | 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;
          }
4168
        | BINLOG_SYM EVENTS_SYM binlog_in binlog_from
4169
          {
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	    LEX *lex= Lex;
	    lex->sql_command= SQLCOM_SHOW_BINLOG_EVENTS;
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          } opt_limit_clause_init
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	| keys_or_index FROM table_ident opt_db
	  {
	    Lex->sql_command= SQLCOM_SHOW_KEYS;
	    if ($4)
	      $3->change_db($4);
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	    if (!Select->add_table_to_list(YYTHD, $3, NULL, 0))
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	      YYABORT;
	  }
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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;
	  }
4202
        | COUNT_SYM '(' '*' ')' WARNINGS
4203
          { (void) create_select_for_variable("warning_count"); }
4204
        | COUNT_SYM '(' '*' ')' ERRORS
4205
	  { (void) create_select_for_variable("error_count"); }
4206
        | WARNINGS opt_limit_clause_init
4207
          { Lex->sql_command = SQLCOM_SHOW_WARNS;}
4208
        | ERRORS opt_limit_clause_init
4209
          { Lex->sql_command = SQLCOM_SHOW_ERRORS;}
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	| STATUS_SYM wild
	  { Lex->sql_command= SQLCOM_SHOW_STATUS; }
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        | INNOBASE_SYM STATUS_SYM
4213
          { Lex->sql_command = SQLCOM_SHOW_INNODB_STATUS; WARN_DEPRECATED("SHOW INNODB STATUS", "SHOW ENGINE INNODB STATUS"); }
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	| opt_full PROCESSLIST_SYM
	  { Lex->sql_command= SQLCOM_SHOW_PROCESSLIST;}
4216
	| opt_var_type VARIABLES wild
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4217
	  {
4218
	    THD *thd= YYTHD;
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	    thd->lex->sql_command= SQLCOM_SHOW_VARIABLES;
	    thd->lex->option_type= (enum_var_type) $1;
4221
	  }
4222
	| charset wild
4223
	  { Lex->sql_command= SQLCOM_SHOW_CHARSETS; }
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	| COLLATION_SYM wild
	  { Lex->sql_command= SQLCOM_SHOW_COLLATIONS; }
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	| BERKELEY_DB_SYM LOGS_SYM
4227
	  { Lex->sql_command= SQLCOM_SHOW_LOGS; WARN_DEPRECATED("SHOW BDB LOGS", "SHOW ENGINE BDB LOGS"); }
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	| LOGS_SYM
4229
	  { 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;
            }
            curr_user->password.str=NullS;
	    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;
	    lex->grant_user->password.str=NullS;
	  }
4260
	| CREATE DATABASE opt_if_not_exists ident
4261 4262
	  {
	    Lex->sql_command=SQLCOM_SHOW_CREATE_DB;
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	    Lex->create_info.options=$3;
	    Lex->name=$4.str;
4265
	  }
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        | CREATE TABLE_SYM table_ident
          {
	    Lex->sql_command = SQLCOM_SHOW_CREATE;
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	    if (!Select->add_table_to_list(YYTHD, $3, NULL,0))
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	      YYABORT;
	  }
        | 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;
4279
          };
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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:
	      net_printf(YYTHD, ER_NOT_SUPPORTED_YET, "STATUS");
	      YYABORT;
	    }
	  }
	| LOGS_SYM
	  {
	    switch (Lex->create_info.db_type) {
	    case DB_TYPE_BERKELEY_DB:
	      Lex->sql_command = SQLCOM_SHOW_LOGS;
	      break;
	    default:
	      net_printf(YYTHD, ER_NOT_SUPPORTED_YET, "LOGS");
	      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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wild:
	/* empty */
4319
	| LIKE text_string { Lex->wild= $2; };
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opt_full:
	/* empty */ { Lex->verbose=0; }
4323
	| FULL	    { Lex->verbose=1; };
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from_or_in:
	FROM
4327
	| IN_SYM;
4328

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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 */ }
4335
        | FROM ulonglong_num { Lex->mi.pos = $2; };
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/* A Oracle compatible synonym for show */
describe:
	describe_command table_ident
	{
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	  LEX *lex=Lex;
	  lex->wild=0;
	  lex->verbose=0;
	  lex->sql_command=SQLCOM_SHOW_FIELDS;
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	  if (!Select->add_table_to_list(lex->thd, $2, NULL,0))
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	    YYABORT;
	}
4349
	opt_describe_column {}
4350 4351 4352
	| describe_command opt_extended_describe
	  { Lex->describe|= DESCRIBE_NORMAL; }
	  select
4353
          {
4354
	    LEX *lex=Lex;
4355
	    lex->select_lex.options|= SELECT_DESCRIBE;
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	  }
	;
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describe_command:
	DESC
4361
	| 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; }
4371
	| 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:
4378
	FLUSH_SYM opt_no_write_to_binlog
4379 4380 4381
	{
	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_FLUSH; lex->type=0;
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          lex->no_write_to_binlog= $2;
4383
	}
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	flush_options
	{}
	;
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flush_options:
	flush_options ',' flush_option
4390
	| flush_option;
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flush_option:
4393
	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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4405
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
4420
	| reset_option;
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reset_option:
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        SLAVE                 { Lex->type|= REFRESH_SLAVE; }
        | MASTER_SYM          { Lex->type|= REFRESH_MASTER; }
4425
	| QUERY_SYM CACHE_SYM { Lex->type|= REFRESH_QUERY_CACHE;};
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4427
purge:
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	PURGE
	{
	  LEX *lex=Lex;
	  lex->type=0;
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	} purge_options
	{}
	;

purge_options:
4437
	master_or_binary LOGS_SYM purge_option
4438
	;
4439 4440

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
	{
	  if ($2->check_cols(1) || $2->fix_fields(Lex->thd, 0, &$2))
	  {
	    net_printf(Lex->thd, ER_WRONG_ARGUMENTS, "PURGE LOGS BEFORE");
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	    YYABORT;
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	  }
	  Item *tmp= new Item_func_unix_timestamp($2);
4454
	  /*
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	    it is OK only emulate fix_fieds, because we need only
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            value of constant
	  */
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	  tmp->quick_fix_field();
4459
	  Lex->sql_command = SQLCOM_PURGE_BEFORE;
4460
	  Lex->purge_time= (ulong) tmp->val_int();
4461
	}
4462
	;
4463

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/* kill threads */

kill:
4467
	KILL_SYM expr
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	{
4469
	  LEX *lex=Lex;
4470
	  if ($2->fix_fields(lex->thd, 0, &$2) || $2->check_cols(1))
4471
	  {
4472
	    send_error(lex->thd, ER_SET_CONSTANTS_ONLY);
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	    YYABORT;
	  }
          lex->sql_command=SQLCOM_KILL;
	  lex->thread_id= (ulong) $2->val_int();
4477
	};
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/* change database */

use:	USE_SYM ident
4482 4483
	{
	  LEX *lex=Lex;
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	  lex->sql_command=SQLCOM_CHANGE_DB;
	  lex->select_lex.db= $2.str;
4486
	};
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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;
4496
	  if (!(lex->exchange= new sql_exchange($6.str,0)))
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	    YYABORT;
4498
	  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;
4518
        };
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opt_local:
	/* empty */	{ $$=0;}
4522
	| LOCAL_SYM	{ $$=1;};
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4524
load_data_lock:
4525
	/* 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; }
4533
	| IGNORE_SYM	{ Lex->duplicates=DUP_IGNORE; };
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opt_field_term:
	/* empty */
4537
	| COLUMNS field_term_list;
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field_term_list:
	field_term_list field_term
4541
	| field_term;
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field_term:
	TERMINATED BY text_string { Lex->exchange->field_term= $3;}
	| OPTIONALLY ENCLOSED BY text_string
4546 4547 4548 4549 4550
	  {
	    LEX *lex=Lex;
	    lex->exchange->enclosed= $4;
	    lex->exchange->opt_enclosed=1;
	  }
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	| ENCLOSED BY text_string { Lex->exchange->enclosed= $3;}
4552
	| ESCAPED BY text_string  { Lex->exchange->escaped= $3;};
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4553 4554 4555

opt_line_term:
	/* empty */
4556
	| LINES line_term_list;
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4557 4558 4559

line_term_list:
	line_term_list line_term
4560
	| line_term;
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4561 4562 4563

line_term:
	TERMINATED BY text_string { Lex->exchange->line_term= $3;}
4564
	| STARTING BY text_string { Lex->exchange->line_start= $3;};
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4565 4566 4567 4568

opt_ignore_lines:
	/* empty */
	| IGNORE_SYM NUM LINES
4569
	  { Lex->exchange->skip_lines=atol($2.str); };
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/* Common definitions */

text_literal:
4574
	TEXT_STRING_literal
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4575 4576
	{
	  THD *thd= YYTHD;
4577
	  $$ = new Item_string($1.str,$1.length,thd->variables.collation_connection);
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	}
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	| NCHAR_STRING
4580
	{ $$=  new Item_string($1.str,$1.length,national_charset_info); }
4581
	| UNDERSCORE_CHARSET TEXT_STRING
4582
	  { $$ = new Item_string($2.str,$2.length,Lex->charset); }
4583
	| text_literal TEXT_STRING_literal
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4584 4585
	  { ((Item_string*) $1)->append($2.str,$2.length); }
	;
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text_string:
4588
	TEXT_STRING_literal
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	{ $$=  new (&YYTHD->mem_root) String($1.str,$1.length,YYTHD->variables.collation_connection); }
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	| HEX_NUM
	  {
4592
	    Item *tmp = new Item_varbinary($1.str,$1.length);
4593
	    /*
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4594
	      it is OK only emulate fix_fieds, because we need only
4595 4596 4597
              value of constant
	    */
	    $$= tmp ?
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	      tmp->quick_fix_field(), tmp->val_str((String*) 0) :
4599
	      (String*) 0;
4600 4601 4602
	  }
	;

4603
param_marker:
4604
        '?'
4605
        {
4606 4607 4608
          THD *thd=YYTHD;
	  LEX *lex= thd->lex;
          if (thd->command == COM_PREPARE)
4609
          {
4610 4611 4612 4613 4614 4615 4616
            Item_param *item= new Item_param((uint) (lex->tok_start -
                                                     (uchar *) thd->query));
            if (!($$= item) || lex->param_list.push_back(item))
            {
	      send_error(thd, ER_OUT_OF_RESOURCES);
	      YYABORT;
            }
4617
          }
4618
          else
4619
          {
4620
            yyerror(ER(ER_SYNTAX_ERROR));
4621 4622
            YYABORT;
          }
4623 4624 4625
        }
	;

4626 4627 4628
signed_literal:
	literal		{ $$ = $1; }
	| '+' NUM_literal { $$ = $2; }
4629 4630
	| '-' NUM_literal
	  {
4631
	    $2->max_length++;
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	    $$= $2->neg();
4633
	  }
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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	{ $$ =	new Item_null();
4641
			  Lex->next_state=MY_LEX_OPERATOR_OR_IDENT;}
4642
	| HEX_NUM	{ $$ =	new Item_varbinary($1.str,$1.length);}
4643
	| UNDERSCORE_CHARSET HEX_NUM
4644
	  {
4645
	    Item *tmp= new Item_varbinary($2.str,$2.length);
4646
	    /*
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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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4651
	      tmp->quick_fix_field(), tmp->val_str((String*) 0) :
4652
	      (String*) 0;
4653 4654 4655
	    $$= new Item_string(str ? str->ptr() : "",
				str ? str->length() : 0,
				Lex->charset);
4656
	  }
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	| DATE_SYM text_literal { $$ = $2; }
	| TIME_SYM text_literal { $$ = $2; }
4659
	| TIMESTAMP text_literal { $$ = $2; };
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4660

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NUM_literal:
	NUM		{ $$ =	new Item_int($1.str, (longlong) strtol($1.str, NULL, 10),$1.length); }
	| LONG_NUM	{ $$ =	new Item_int($1.str, (longlong) strtoll($1.str,NULL,10), $1.length); }
	| ULONGLONG_NUM	{ $$ =	new Item_uint($1.str, $1.length); }
	| REAL_NUM	{ $$ =	new Item_real($1.str, $1.length); }
	| FLOAT_NUM	{ $$ =	new Item_float($1.str, $1.length); }
	;
	
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4669 4670 4671 4672 4673 4674
/**********************************************************************
** Createing different items.
**********************************************************************/

insert_ident:
	simple_ident	 { $$=$1; }
4675
	| table_wild	 { $$=$1; };
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4676 4677

table_wild:
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4678
	ident '.' '*'
4679 4680
	{
	  $$ = new Item_field(NullS,$1.str,"*");
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	  Lex->current_select->with_wild++;
4682
	}
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	| ident '.' ident '.' '*'
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	{
	  $$ = new Item_field((YYTHD->client_capabilities &
   			     CLIENT_NO_SCHEMA ? NullS : $1.str),
			     $3.str,"*");
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	  Lex->current_select->with_wild++;
4689 4690
	}
	;
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order_ident:
4693
	expr { $$=$1; };
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simple_ident:
	ident
4697
	{
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	  SELECT_LEX *sel=Select;
4699 4700 4701
	  $$= (sel->parsing_place != SELECT_LEX_NODE::IN_HAVING ||
	       sel->get_in_sum_expr() > 0) ?
              (Item*) new Item_field(NullS,NullS,$1.str) :
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	      (Item*) new Item_ref(0,0, NullS,NullS,$1.str);
4703
	}
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	| ident '.' ident
4705
	{
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	  THD *thd= YYTHD;
4707
	  LEX *lex= thd->lex;
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4708
	  SELECT_LEX *sel= lex->current_select;
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4709 4710
	  if (sel->no_table_names_allowed)
	  {
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	    my_printf_error(ER_TABLENAME_NOT_ALLOWED_HERE,
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4712 4713 4714
			    ER(ER_TABLENAME_NOT_ALLOWED_HERE),
			    MYF(0), $1.str, thd->where);
	  }
4715 4716 4717
	  $$= (sel->parsing_place != SELECT_LEX_NODE::IN_HAVING ||
	       sel->get_in_sum_expr() > 0) ?
	      (Item*) new Item_field(NullS,$1.str,$3.str) :
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	      (Item*) new Item_ref(0,0,NullS,$1.str,$3.str);
4719
	}
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	| '.' ident '.' ident
4721
	{
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4722
	  THD *thd= YYTHD;
4723
	  LEX *lex= thd->lex;
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4724
	  SELECT_LEX *sel= lex->current_select;
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4725 4726
	  if (sel->no_table_names_allowed)
	  {
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	    my_printf_error(ER_TABLENAME_NOT_ALLOWED_HERE,
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4728 4729 4730
			    ER(ER_TABLENAME_NOT_ALLOWED_HERE),
			    MYF(0), $2.str, thd->where);
	  }
4731 4732 4733
	  $$= (sel->parsing_place != SELECT_LEX_NODE::IN_HAVING ||
	       sel->get_in_sum_expr() > 0) ?
	      (Item*) new Item_field(NullS,$2.str,$4.str) :
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              (Item*) new Item_ref(0,0,NullS,$2.str,$4.str);
4735
	}
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4736
	| ident '.' ident '.' ident
4737
	{
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4738
	  THD *thd= YYTHD;
4739
	  LEX *lex= thd->lex;
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4740
	  SELECT_LEX *sel= lex->current_select;
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4741 4742
	  if (sel->no_table_names_allowed)
	  {
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4743
	    my_printf_error(ER_TABLENAME_NOT_ALLOWED_HERE,
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4744 4745 4746
			    ER(ER_TABLENAME_NOT_ALLOWED_HERE),
			    MYF(0), $3.str, thd->where);
	  }
4747 4748 4749 4750 4751
	  $$= (sel->parsing_place != SELECT_LEX_NODE::IN_HAVING ||
	       sel->get_in_sum_expr() > 0) ?
	      (Item*) new Item_field((YYTHD->client_capabilities &
				      CLIENT_NO_SCHEMA ? NullS : $1.str),
				     $3.str, $5.str) :
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4752 4753
	      (Item*) new Item_ref(0,0,(YYTHD->client_capabilities &
				        CLIENT_NO_SCHEMA ? NullS : $1.str),
4754
                                   $3.str, $5.str);
4755
	};
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4756 4757 4758 4759 4760


field_ident:
	ident			{ $$=$1;}
	| ident '.' ident	{ $$=$3;}	/* Skipp schema name in create*/
4761
	| '.' ident		{ $$=$2;}	/* For Delphi */;
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4762 4763 4764

table_ident:
	ident			{ $$=new Table_ident($1); }
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4765
	| ident '.' ident	{ $$=new Table_ident(YYTHD, $1,$3,0);}
4766 4767 4768 4769
	| '.' ident		{ $$=new Table_ident($2);} /* For Delphi */
        ;

table_ident_ref:
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4770 4771
	ident			{ LEX_STRING db={(char*) any_db,3}; $$=new Table_ident(YYTHD, db,$1,0); }
	| ident '.' ident	{ $$=new Table_ident(YYTHD, $1,$3,0);}
4772
        ;
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4773

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IDENT_sys:
4775 4776 4777 4778 4779 4780 4781 4782 4783 4784
	IDENT { $$= $1; }
	| IDENT_QUOTED
	  {
	    THD *thd= YYTHD;
	    if (thd->charset_is_system_charset)
	      $$= $1;
	    else
	      thd->convert_string(&$$, system_charset_info,
				  $1.str, $1.length, thd->charset());
	  }
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4785 4786 4787 4788 4789 4790
	;

TEXT_STRING_sys:
	TEXT_STRING
	{
	  THD *thd= YYTHD;
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4791 4792
	  if (thd->charset_is_system_charset)
	    $$= $1;
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4793
	  else
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4794 4795
	    thd->convert_string(&$$, system_charset_info,
				$1.str, $1.length, thd->charset());
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	}
	;

4799
TEXT_STRING_literal:
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4800 4801 4802
	TEXT_STRING
	{
	  THD *thd= YYTHD;
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4803 4804
	  if (thd->charset_is_collation_connection)
	    $$= $1;
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4805
	  else
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	    thd->convert_string(&$$, thd->variables.collation_connection,
				$1.str, $1.length, thd->charset());
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	}
	;


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ident:
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4813
	IDENT_sys	    { $$=$1; }
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4814 4815
	| keyword
	{
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4816 4817 4818
	  THD *thd= YYTHD;
	  $$.str=    thd->strmake($1.str, $1.length);
	  $$.length= $1.length;
4819 4820
	}
	;
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4821 4822

ident_or_text:
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4823 4824 4825
	ident 			{ $$=$1;}
	| TEXT_STRING_sys	{ $$=$1;}
	| LEX_HOSTNAME		{ $$=$1;};
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4826 4827 4828 4829

user:
	ident_or_text
	{
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4830 4831
	  THD *thd= YYTHD;
	  if (!($$=(LEX_USER*) thd->alloc(sizeof(st_lex_user))))
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4832
	    YYABORT;
4833 4834 4835 4836
	  $$->user = $1;
	  $$->host.str= (char *) "%";
	  $$->host.length= 1;
	}
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4837 4838
	| ident_or_text '@' ident_or_text
	  {
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4839 4840
	    THD *thd= YYTHD;
	    if (!($$=(LEX_USER*) thd->alloc(sizeof(st_lex_user))))
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4841 4842
	      YYABORT;
	    $$->user = $1; $$->host=$3;
4843
	  }
4844
	| CURRENT_USER optional_braces
4845 4846 4847 4848 4849 4850 4851 4852 4853 4854 4855 4856 4857 4858 4859 4860 4861
	{
          THD *thd= YYTHD;
          if (!($$=(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		{}
4869
	| AGAINST		{}
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	| AGGREGATE_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		{}
4876
	| 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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4880 4881
	| BIT_SYM		{}
	| BOOL_SYM		{}
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	| BOOLEAN_SYM		{}
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	| BYTE_SYM		{}
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	| BTREE_SYM		{}
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	| CACHE_SYM		{}
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	| CHANGED		{}
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	| CHARSET		{}
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	| CHECKSUM_SYM		{}
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	| CIPHER_SYM		{}
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	| CLIENT_SYM		{}
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	| CLOSE_SYM		{}
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	| COLLATION_SYM		{}
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	| COMMENT_SYM		{}
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	| COMMITTED_SYM		{}
4895
	| COMMIT_SYM		{}
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	| COMPRESSED_SYM	{}
4897
	| CONCURRENT		{}
4898
	| CUBE_SYM		{}
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	| DATA_SYM		{}
	| DATETIME		{}
	| DATE_SYM		{}
	| DAY_SYM		{}
	| DELAY_KEY_WRITE_SYM	{}
4904 4905
	| DES_KEY_FILE		{}
	| DIRECTORY_SYM		{}
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	| DISCARD		{}
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	| DO_SYM		{}
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	| DUAL_SYM		{}
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	| DUMPFILE		{}
	| DUPLICATE_SYM		{}
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	| DYNAMIC_SYM		{}
	| END			{}
	| ENUM			{}
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	| ENGINE_SYM		{}
4915
	| ENGINES_SYM		{}
4916
	| ERRORS		{}
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	| ESCAPE_SYM		{}
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	| EVENTS_SYM		{}
4919
	| EXECUTE_SYM		{}
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        | EXPANSION_SYM         {}
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	| EXTENDED_SYM		{}
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	| FAST_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		{}
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	| GEOMETRY_SYM		{}
4931
	| GEOMETRYCOLLECTION	{}
4932
	| GET_FORMAT		{}
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	| GRANTS		{}
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	| GLOBAL_SYM		{}
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	| HANDLER_SYM		{}
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	| HASH_SYM		{}
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	| HELP_SYM		{}
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	| HOSTS_SYM		{}
	| HOUR_SYM		{}
	| IDENTIFIED_SYM	{}
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	| IMPORT		{}
4942
	| INDEXES		{}
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	| ISOLATION		{}
4944
	| ISSUER_SYM		{}
4945
	| INNOBASE_SYM		{}
4946
	| INSERT_METHOD		{}
4947
	| RELAY_THREAD		{}
4948
	| LAST_SYM		{}
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	| LEAVES                {}
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	| LEVEL_SYM		{}
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	| 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	{}
4963
	| 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	{}
4974
	| MEDIUM_SYM		{}
4975
	| MICROSECOND_SYM	{}
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	| MINUTE_SYM		{}
	| MIN_ROWS		{}
	| MODIFY_SYM		{}
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	| MODE_SYM		{}
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	| MONTH_SYM		{}
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	| MULTILINESTRING	{}
	| MULTIPOINT		{}
	| MULTIPOLYGON		{}
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	| NAMES_SYM		{}
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	| NATIONAL_SYM		{}
	| NCHAR_SYM		{}
4987
	| NDBCLUSTER_SYM	{}
4988
	| NEXT_SYM		{}
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	| NEW_SYM		{}
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	| NO_SYM		{}
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	| NONE_SYM		{}
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	| NVARCHAR_SYM		{}
4993
	| OFFSET_SYM		{}
4994
	| OLD_PASSWORD		{}
4995
	| OPEN_SYM		{}
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	| PACK_KEYS_SYM		{}
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	| PARTIAL		{}
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	| PASSWORD		{}
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	| POINT_SYM		{}
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	| POLYGON		{}
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	| PREV_SYM		{}
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	| PROCESS		{}
	| PROCESSLIST_SYM	{}
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	| QUERY_SYM		{}
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	| 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		{}
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	| RELAY_LOG_FILE_SYM	{}
	| RELAY_LOG_POS_SYM	{}
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	| RELOAD		{}
	| REPAIR		{}
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	| REPEATABLE_SYM	{}
5016
	| REPLICATION		{}
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	| RESET_SYM		{}
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	| RESOURCES		{}
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	| RESTORE_SYM		{}
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	| ROLLBACK_SYM		{}
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	| ROLLUP_SYM		{}
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	| ROWS_SYM		{}
	| ROW_FORMAT_SYM	{}
	| ROW_SYM		{}
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	| RTREE_SYM		{}
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	| SAVEPOINT_SYM		{}
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	| SECOND_SYM		{}
5028
	| SERIAL_SYM		{}
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	| SERIALIZABLE_SYM	{}
	| SESSION_SYM		{}
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	| SIGNED_SYM		{}
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	| SIMPLE_SYM		{}
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	| SHARE_SYM		{}
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	| SHUTDOWN		{}
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	| SLAVE			{}
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	| SOUNDS_SYM		{}
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	| SQL_CACHE_SYM		{}
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	| SQL_BUFFER_RESULT	{}
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	| SQL_NO_CACHE_SYM	{}
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	| SQL_THREAD		{}
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	| START_SYM		{}
	| STATUS_SYM		{}
	| STOP_SYM		{}
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	| STORAGE_SYM		{}
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	| STRING_SYM		{}
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	| SUBDATE_SYM		{}
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	| SUBJECT_SYM		{}
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	| SUPER_SYM		{}
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	| TABLESPACE		{}
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	| TEMPORARY		{}
	| TEXT_SYM		{}
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	| TRANSACTION_SYM	{}
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	| TRUNCATE_SYM		{}
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	| TIMESTAMP		{}
	| TIME_SYM		{}
	| TYPE_SYM		{}
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	| TYPES_SYM		{}
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	| UDF_SYM		{}
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	| UNCOMMITTED_SYM	{}
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	| UNICODE_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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	| VALUE_SYM		{}
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	| WARNINGS		{}
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	| WORK_SYM		{}
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	| X509_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;
5079
	  lex->option_type=OPT_SESSION;
5080
	  lex->var_list.empty();
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	}
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	option_value_list
	{}
	;
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opt_option:
	/* empty */ {}
5088
	| 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; }
	;

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:
5116
	'@' ident_or_text equal expr
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	{
5118
	  Lex->var_list.push_back(new set_var_user(new Item_func_set_user_var($2,$4)));
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	}
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	| internal_variable_name equal set_expr_or_default
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	  {
5122
	    LEX *lex=Lex;
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	    lex->var_list.push_back(new set_var(lex->option_type, $1.var,
						&$1.base_name, $3));
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	  }
5126
	| '@' '@' 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;
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	    LEX_STRING tmp;
	    tmp.str=0;
	    tmp.length=0;
5138
	    lex->var_list.push_back(new set_var(lex->option_type,
5139
						find_sys_var("tx_isolation"),
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						&tmp,
5141
						new Item_int((int32) $4)));
5142
	  }
5143
	| charset old_or_new_charset_name_or_default
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	{
5145
	  THD *thd= YYTHD;
5146
	  LEX *lex= Lex;
5147
	  $2= $2 ? $2: global_system_variables.character_set_client;
5148
	  lex->var_list.push_back(new set_var_collation_client($2,thd->variables.collation_database,$2));
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	}
5150
	| NAMES_SYM charset_name_or_default opt_collate
5151
	{
5152
	  THD *thd= YYTHD;
5153
	  LEX *lex= Lex;
5154
	  $2= $2 ? $2 : global_system_variables.character_set_client;
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	  $3= $3 ? $3 : $2;
	  if (!my_charset_same($2,$3))
5157
	  {
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	    net_printf(thd,ER_COLLATION_CHARSET_MISMATCH,$3->name,$2->csname);
	    YYABORT;
5160
	  }
5161
	  lex->var_list.push_back(new set_var_collation_client($3,$3,$3));
5162
	}
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	| PASSWORD equal text_or_password
5164
	  {
5165
	    THD *thd=YYTHD;
5166
	    LEX_USER *user;
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	    if (!(user=(LEX_USER*) thd->alloc(sizeof(LEX_USER))))
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	      YYABORT;
	    user->host.str=0;
	    user->user.str=thd->priv_user;
5171
	    thd->lex->var_list.push_back(new set_var_password(user, $3));
5172 5173
	  }
	| PASSWORD FOR_SYM user equal text_or_password
5174
	  {
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	    Lex->var_list.push_back(new set_var_password($3,$5));
	  }
5177
	;
5178

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internal_variable_name:
	ident
	{
	  sys_var *tmp=find_sys_var($1.str, $1.length);
	  if (!tmp)
	    YYABORT;
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	  $$.var= tmp;
	  $$.base_name.str=0;
	  $$.base_name.length=0;
5188
	}
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	| ident '.' ident
	  {
5191 5192
            if (check_reserved_words(&$1))
            {
5193
	      yyerror(ER(ER_SYNTAX_ERROR));
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              YYABORT;
            }
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	    sys_var *tmp=find_sys_var($3.str, $3.length);
	    if (!tmp)
	      YYABORT;
	    if (!tmp->is_struct())
	      net_printf(YYTHD, ER_VARIABLE_IS_NOT_STRUCT, $3.str);
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	    $$.var= tmp;
	    $$.base_name= $1;
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	  }
	| DEFAULT '.' ident
	  {
	    sys_var *tmp=find_sys_var($3.str, $3.length);
	    if (!tmp)
	      YYABORT;
	    if (!tmp->is_struct())
	      net_printf(YYTHD, ER_VARIABLE_IS_NOT_STRUCT, $3.str);
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	    $$.var= tmp;
	    $$.base_name.str=    (char*) "default";
	    $$.base_name.length= 7;
5214
	  }
5215
        ;
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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; }
	;
5223

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text_or_password:
	TEXT_STRING { $$=$1.str;}
	| PASSWORD '(' TEXT_STRING ')'
	  {
5228
	    $$= $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;
5237 5238
	  }
          ;
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5240

5241
set_expr_or_default:
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	expr      { $$=$1; }
	| DEFAULT { $$=0; }
5244 5245
	| 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); }
5247
	;
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/* Lock function */

lock:
	LOCK_SYM table_or_tables
	{
	  Lex->sql_command=SQLCOM_LOCK_TABLES;
	}
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	table_lock_list
	{}
	;
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table_or_tables:
	TABLE_SYM
5263
	| TABLES;
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table_lock_list:
	table_lock
5267
	| table_lock_list ',' table_lock;
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table_lock:
	table_ident opt_table_alias lock_option
5271
	{
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	  if (!Select->add_table_to_list(YYTHD, $1, $2, 0, (thr_lock_type) $3))
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	   YYABORT;
	}
5275
        ;
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lock_option:
	READ_SYM	{ $$=TL_READ_NO_INSERT; }
5279
	| WRITE_SYM     { $$=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 table_or_tables { Lex->sql_command=SQLCOM_UNLOCK_TABLES; }
        ;
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5289
/*
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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;
	}
5301
	| HANDLER_SYM table_ident_ref CLOSE_SYM
5302
	{
5303 5304
	  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;
	}
5308
	| HANDLER_SYM table_ident_ref READ_SYM
5309
	{
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	  LEX *lex=Lex;
	  lex->sql_command = SQLCOM_HA_READ;
	  lex->ha_rkey_mode= HA_READ_KEY_EXACT;	/* Avoid purify warnings */
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	  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))
5316
	    YYABORT;
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5317
        }
5318
        handler_read_or_scan where_clause opt_limit_clause {}
5319
        ;
5320

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5321 5322
handler_read_or_scan:
	handler_scan_function         { Lex->backup_dir= 0; }
5323 5324
        | ident handler_rkey_function { Lex->backup_dir= $1.str; }
        ;
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5325 5326 5327

handler_scan_function:
	FIRST_SYM  { Lex->ha_read_mode = RFIRST; }
5328 5329
	| NEXT_SYM { Lex->ha_read_mode = RNEXT;  }
        ;
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5330 5331 5332 5333 5334 5335

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;  }
5336 5337
	| handler_rkey_mode
	{
5338 5339
	  LEX *lex=Lex;
	  lex->ha_read_mode = RKEY;
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5340
	  lex->ha_rkey_mode=$1;
5341
	  if (!(lex->insert_list = new List_item))
5342
	    YYABORT;
5343 5344
	} '(' values ')' { }
        ;
5345 5346

handler_rkey_mode:
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5347 5348 5349 5350
	  EQ     { $$=HA_READ_KEY_EXACT;   }
	| GE     { $$=HA_READ_KEY_OR_NEXT; }
	| LE     { $$=HA_READ_KEY_OR_PREV; }
	| GT_SYM { $$=HA_READ_AFTER_KEY;   }
5351 5352
	| LT     { $$=HA_READ_BEFORE_KEY;  }
        ;
5353

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5354 5355 5356 5357 5358
/* GRANT / REVOKE */

revoke:
	REVOKE
	{
5359 5360 5361 5362 5363
	  LEX *lex=Lex;
	  lex->sql_command = SQLCOM_REVOKE;
	  lex->users_list.empty();
	  lex->columns.empty();
	  lex->grant= lex->grant_tot_col=0;
5364
	  lex->select_lex.db=0;
5365 5366
	  lex->ssl_type= SSL_TYPE_NOT_SPECIFIED;
	  lex->ssl_cipher= lex->x509_subject= lex->x509_issuer= 0;
5367
	  bzero((char*) &lex->mqh, sizeof(lex->mqh));
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5368
	}
5369 5370 5371 5372 5373
	revoke_command
	{}
        ;

revoke_command:
5374 5375
	grant_privileges ON opt_table FROM user_list
	{}
5376
	|
5377
	ALL PRIVILEGES ',' GRANT OPTION FROM user_list
5378 5379 5380
	{
	  Lex->sql_command = SQLCOM_REVOKE_ALL;
	}
5381
	;
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5382 5383 5384 5385

grant:
	GRANT
	{
5386 5387 5388
	  LEX *lex=Lex;
	  lex->users_list.empty();
	  lex->columns.empty();
5389 5390
	  lex->sql_command = SQLCOM_GRANT;
	  lex->grant= lex->grant_tot_col= 0;
5391
	  lex->select_lex.db= 0;
5392 5393
	  lex->ssl_type= SSL_TYPE_NOT_SPECIFIED;
	  lex->ssl_cipher= lex->x509_subject= lex->x509_issuer= 0;
5394
	  bzero((char *)&(lex->mqh),sizeof(lex->mqh));
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5395 5396
	}
	grant_privileges ON opt_table TO_SYM user_list
5397 5398 5399
	require_clause grant_options
	{}
	;
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5400 5401 5402

grant_privileges:
	grant_privilege_list {}
5403
	| ALL PRIVILEGES	{ Lex->grant = GLOBAL_ACLS;}
5404 5405
	| ALL			{ Lex->grant = GLOBAL_ACLS;}
        ;
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grant_privilege_list:
	grant_privilege
5409
	| grant_privilege_list ',' grant_privilege;
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5410 5411

grant_privilege:
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5412
	SELECT_SYM	{ Lex->which_columns = SELECT_ACL;} opt_column_list {}
5413 5414 5415
	| 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 {}
5416 5417
	| DELETE_SYM	{ Lex->grant |= DELETE_ACL;}
	| USAGE		{}
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5418 5419 5420 5421
	| INDEX		{ Lex->grant |= INDEX_ACL;}
	| ALTER		{ Lex->grant |= ALTER_ACL;}
	| CREATE	{ Lex->grant |= CREATE_ACL;}
	| DROP		{ Lex->grant |= DROP_ACL;}
5422
	| 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;}
5427 5428 5429 5430 5431 5432 5433 5434
	| 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; }
	| REPLICATION SLAVE  { Lex->grant |= REPL_SLAVE_ACL;}
	| REPLICATION CLIENT_SYM { Lex->grant |= REPL_CLIENT_ACL;}
	;
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5435

5436

5437 5438
opt_and:
	/* empty */	{}
5439
	| AND_SYM	{}
5440 5441 5442 5443 5444 5445 5446 5447 5448
	;

require_list:
	 require_list_element opt_and require_list
	 | require_list_element
	 ;

require_list_element:
	SUBJECT_SYM TEXT_STRING
5449 5450 5451 5452
	{
	  LEX *lex=Lex;
	  if (lex->x509_subject)
	  {
5453
	    net_printf(lex->thd,ER_DUP_ARGUMENT, "SUBJECT");
5454 5455 5456 5457 5458 5459 5460 5461 5462
	    YYABORT;
	  }
	  lex->x509_subject=$2.str;
	}
	| ISSUER_SYM TEXT_STRING
	{
	  LEX *lex=Lex;
	  if (lex->x509_issuer)
	  {
5463
	    net_printf(lex->thd,ER_DUP_ARGUMENT, "ISSUER");
5464 5465 5466 5467 5468 5469 5470 5471 5472
	    YYABORT;
	  }
	  lex->x509_issuer=$2.str;
	}
	| CIPHER_SYM TEXT_STRING
	{
	  LEX *lex=Lex;
	  if (lex->ssl_cipher)
	  {
5473
	    net_printf(lex->thd,ER_DUP_ARGUMENT, "CIPHER");
5474 5475 5476 5477 5478
	    YYABORT;
	  }
	  lex->ssl_cipher=$2.str;
	}
	;
5479

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5480 5481 5482
opt_table:
	'*'
	  {
5483
	    LEX *lex= Lex;
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5484
	    lex->current_select->db= lex->thd->db;
5485
	    if (lex->grant == GLOBAL_ACLS)
5486 5487
	      lex->grant = DB_ACLS & ~GRANT_ACL;
	    else if (lex->columns.elements)
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5488
	    {
5489
	      send_error(lex->thd,ER_ILLEGAL_GRANT_FOR_TABLE);
5490
	      YYABORT;
5491
	    }
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	  }
	| ident '.' '*'
	  {
5495
	    LEX *lex= Lex;
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5496
	    lex->current_select->db = $1.str;
5497
	    if (lex->grant == GLOBAL_ACLS)
5498 5499
	      lex->grant = DB_ACLS & ~GRANT_ACL;
	    else if (lex->columns.elements)
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5500
	    {
5501
	      send_error(lex->thd,ER_ILLEGAL_GRANT_FOR_TABLE);
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5502 5503 5504 5505 5506
	      YYABORT;
	    }
	  }
	| '*' '.' '*'
	  {
5507
	    LEX *lex= Lex;
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5508
	    lex->current_select->db = NULL;
5509 5510
	    if (lex->grant == GLOBAL_ACLS)
	      lex->grant= GLOBAL_ACLS & ~GRANT_ACL;
5511
	    else if (lex->columns.elements)
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5512
	    {
5513
	      send_error(lex->thd,ER_ILLEGAL_GRANT_FOR_TABLE);
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5514 5515 5516 5517 5518
	      YYABORT;
	    }
	  }
	| table_ident
	  {
5519
	    LEX *lex=Lex;
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5520
	    if (!lex->current_select->add_table_to_list(lex->thd, $1,NULL,0))
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5521
	      YYABORT;
5522
	    if (lex->grant == GLOBAL_ACLS)
5523
	      lex->grant =  TABLE_ACLS & ~GRANT_ACL;
5524 5525
	  }
          ;
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5526 5527 5528


user_list:
5529 5530 5531 5532 5533 5534 5535
	grant_user  { if (Lex->users_list.push_back($1)) YYABORT;}
	| user_list ',' grant_user
	  {
	    if (Lex->users_list.push_back($3))
	      YYABORT;
	  }
	;
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5536 5537 5538 5539 5540 5541 5542 5543


grant_user:
	user IDENTIFIED_SYM BY TEXT_STRING
	{
	   $$=$1; $1->password=$4;
	   if ($4.length)
	   {
5544
             if (YYTHD->variables.old_passwords)
5545 5546 5547 5548 5549 5550 5551 5552 5553 5554 5555 5556 5557 5558 5559 5560 5561
             {
               char *buff= 
                 (char *) YYTHD->alloc(SCRAMBLED_PASSWORD_CHAR_LENGTH_323+1);
               if (buff)
                 make_scrambled_password_323(buff, $4.str);
               $1->password.str= buff;
               $1->password.length= SCRAMBLED_PASSWORD_CHAR_LENGTH_323;
             }
             else
             {
               char *buff= 
                 (char *) YYTHD->alloc(SCRAMBLED_PASSWORD_CHAR_LENGTH+1);
               if (buff)
                 make_scrambled_password(buff, $4.str);
               $1->password.str= buff;
               $1->password.length= SCRAMBLED_PASSWORD_CHAR_LENGTH;
             }
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5562 5563 5564 5565 5566
	  }
	}
	| user IDENTIFIED_SYM BY PASSWORD TEXT_STRING
	  { $$=$1; $1->password=$5 ; }
	| user
5567 5568
	  { $$=$1; $1->password.str=NullS; }
        ;
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5569 5570 5571


opt_column_list:
5572 5573 5574 5575 5576
	/* empty */
	{
	  LEX *lex=Lex;
	  lex->grant |= lex->which_columns;
	}
5577
	| '(' column_list ')';
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column_list:
	column_list ',' column_list_id
5581
	| column_list_id;
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5582 5583 5584 5585

column_list_id:
	ident
	{
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5586
	  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;
5589
	  LEX *lex=Lex;
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5590 5591
	  while ((point=iter++))
	  {
5592 5593
	    if (!my_strcasecmp(system_charset_info,
                               point->column.ptr(), new_str->ptr()))
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5594 5595
		break;
	  }
5596
	  lex->grant_tot_col|= lex->which_columns;
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5597
	  if (point)
5598
	    point->rights |= lex->which_columns;
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5599
	  else
5600
	    lex->columns.push_back(new LEX_COLUMN (*new_str,lex->which_columns));
5601 5602
	}
        ;
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5603

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5604 5605

require_clause: /* empty */
5606
        | REQUIRE_SYM require_list
5607 5608 5609
          {
            Lex->ssl_type=SSL_TYPE_SPECIFIED;
          }
5610
        | REQUIRE_SYM SSL_SYM
5611 5612 5613
          {
            Lex->ssl_type=SSL_TYPE_ANY;
          }
5614
        | REQUIRE_SYM X509_SYM
5615 5616 5617 5618 5619 5620 5621
          {
            Lex->ssl_type=SSL_TYPE_X509;
          }
	| REQUIRE_SYM NONE_SYM
	  {
	    Lex->ssl_type=SSL_TYPE_NONE;
	  }
5622
          ;
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5623

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5624
grant_options:
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5625
	/* empty */ {}
5626
	| WITH grant_option_list;
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5627

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5628 5629
grant_option_list:
	grant_option_list grant_option {}
5630 5631
	| grant_option {}
        ;
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5632 5633 5634

grant_option:
	GRANT OPTION { Lex->grant |= GRANT_ACL;}
5635
        | MAX_QUERIES_PER_HOUR ULONG_NUM
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5636
        {
5637
	  Lex->mqh.questions=$2;
5638
	  Lex->mqh.bits |= 1;
5639
	}
5640
        | MAX_UPDATES_PER_HOUR ULONG_NUM
5641
        {
5642
	  Lex->mqh.updates=$2;
5643
	  Lex->mqh.bits |= 2;
5644
	}
5645
        | MAX_CONNECTIONS_PER_HOUR ULONG_NUM
5646
        {
5647
	  Lex->mqh.connections=$2;
5648
	  Lex->mqh.bits |= 4;
5649 5650
	}
        ;
5651

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5652
begin:
5653 5654
	BEGIN_SYM   { Lex->sql_command = SQLCOM_BEGIN;} opt_work {}
	;
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5655 5656 5657

opt_work:
	/* empty */ {}
5658 5659
	| WORK_SYM {;}
        ;
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5660 5661

commit:
5662
	COMMIT_SYM   { Lex->sql_command = SQLCOM_COMMIT;};
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5663 5664

rollback:
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5665
	ROLLBACK_SYM
5666 5667 5668 5669 5670
	{
	  Lex->sql_command = SQLCOM_ROLLBACK;
	}
	| ROLLBACK_SYM TO_SYM SAVEPOINT_SYM ident
	{
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5671
	  Lex->sql_command = SQLCOM_ROLLBACK_TO_SAVEPOINT;
5672 5673 5674 5675 5676 5677 5678 5679
	  Lex->savepoint_name = $4.str;
	};
savepoint:
	SAVEPOINT_SYM ident
	{
	  Lex->sql_command = SQLCOM_SAVEPOINT;
	  Lex->savepoint_name = $2.str;
	};
5680 5681

/*
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5682
   UNIONS : glue selects together
5683 5684 5685
*/


5686
union_clause:
5687
	/* empty */ {}
5688 5689
	| union_list
	;
5690 5691

union_list:
5692
	UNION_SYM union_option
5693 5694 5695 5696 5697
	{
	  LEX *lex=Lex;
	  if (lex->exchange)
	  {
	    /* Only the last SELECT can have  INTO...... */
5698
	    net_printf(lex->thd, ER_WRONG_USAGE, "UNION", "INTO");
5699
	    YYABORT;
5700
	  }
5701
	  if (lex->current_select->linkage == GLOBAL_OPTIONS_TYPE)
5702
	  {
5703
            yyerror(ER(ER_SYNTAX_ERROR));
5704 5705
	    YYABORT;
	  }
5706
	  if (mysql_new_select(lex, 0))
5707
	    YYABORT;
5708
          mysql_init_select(lex);
5709
	  lex->current_select->linkage=UNION_TYPE;
5710 5711 5712
          if ($2) /* UNION DISTINCT - remember position */
            lex->current_select->master_unit()->union_distinct=
                                                      lex->current_select;
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5713
	}
5714
	select_init {}
5715
	;
5716 5717

union_opt:
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5718
	union_list {}
5719 5720
	| optional_order_or_limit {}
	;
5721 5722

optional_order_or_limit:
5723
	/* Empty */ {}
5724 5725
	|
	  {
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5726
	    THD *thd= YYTHD;
5727
	    LEX *lex= thd->lex;
5728
	    DBUG_ASSERT(lex->current_select->linkage != GLOBAL_OPTIONS_TYPE);
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5729
	    SELECT_LEX *sel= lex->current_select;
5730
	    SELECT_LEX_UNIT *unit= sel->master_unit();
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5731
	    SELECT_LEX *fake= unit->fake_select_lex;
5732 5733 5734 5735 5736 5737
	    if (fake)
	    {
	      unit->global_parameters= fake;
	      fake->no_table_names_allowed= 1;
	      lex->current_select= fake;
	    }
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5738
	    thd->where= "global ORDER clause";
5739
	  }
5740
	order_or_limit
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5741 5742
          {
	    THD *thd= YYTHD;
5743
	    thd->lex->current_select->no_table_names_allowed= 0;
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	    thd->where= "";
          }
5746 5747 5748
	;

order_or_limit:
5749 5750
	order_clause opt_limit_clause_init
	| limit_clause
5751
	;
5752 5753

union_option:
5754 5755 5756 5757
	/* empty */ { $$=1; }
	| DISTINCT  { $$=1; }
	| ALL       { $$=0; }
        ;
5758

5759 5760
singlerow_subselect:
	subselect_start singlerow_subselect_init
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5761 5762 5763 5764
	subselect_end
	{
	  $$= $2;
	};
5765

5766
singlerow_subselect_init:
5767
	select_init2
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5768
	{
5769 5770
	  $$= new Item_singlerow_subselect(Lex->current_select->
					   master_unit()->first_select());
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5771
	};
5772 5773

exists_subselect:
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5774 5775 5776 5777 5778
	subselect_start exists_subselect_init
	subselect_end
	{
	  $$= $2;
	};
5779 5780

exists_subselect_init:
5781
	select_init2
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5782
	{
5783 5784
	  $$= new Item_exists_subselect(Lex->current_select->master_unit()->
					first_select());
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5785
	};
5786

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

in_subselect_init:
5795
  select_init2
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5796
  {
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5797
    $$= Lex->current_select->master_unit()->first_select();
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  };

5800
subselect_start:
5801
	'(' SELECT_SYM
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5802
	{
5803
	  LEX *lex=Lex;
5804
	  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)
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	  {
            yyerror(ER(ER_SYNTAX_ERROR));
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	    YYABORT;
	  }
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	  if (mysql_new_select(Lex, 1))
	    YYABORT;
	};
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subselect_end:
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	')'
	{
	  LEX *lex=Lex;
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	  lex->current_select = lex->current_select->return_after_parsing();
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	};
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