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Commit 1a5cca78 authored by unknown's avatar unknown
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Merged 


sql/sql_class.h:
  Auto merged
sql/sql_prepare.cc:
  Auto merged
sql/sql_yacc.yy:
  Auto merged
mysys/my_error.c:
  Hand merged
parents 907eb131 2f9a9e55
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Showing with 1087 additions and 163 deletions
mysql-test/r/ps.result 0 → 100644
View file @ 1a5cca78
drop table if exists t1,t2;
create table t1
(
a int primary key,
b char(10)
);
insert into t1 values (1,'one');
insert into t1 values (2,'two');
insert into t1 values (3,'three');
insert into t1 values (4,'four');
set @a=2;
prepare stmt1 from 'select * from t1 where a <= ?';
execute stmt1 using @a;
a b
1 one
2 two
set @a=3;
execute stmt1 using @a;
a b
1 one
2 two
3 three
deallocate prepare no_such_statement;
ERROR HY000: Unknown prepared statement handler (no_such_statement) given to DEALLOCATE PREPARE
execute stmt1;
ERROR HY000: Wrong arguments to EXECUTE
prepare stmt2 from 'prepare nested_stmt from "select 1"';
ERROR 42000: You have an error in your SQL syntax. Check the manual that corresponds to your MySQL server version for the right syntax to use near '"select 1"' at line 1
prepare stmt2 from 'execute stmt1';
ERROR 42000: You have an error in your SQL syntax. Check the manual that corresponds to your MySQL server version for the right syntax to use near 'stmt1' at line 1
prepare stmt2 from 'deallocate prepare z';
ERROR 42000: You have an error in your SQL syntax. Check the manual that corresponds to your MySQL server version for the right syntax to use near 'z' at line 1
prepare stmt3 from 'insert into t1 values (?,?)';
set @arg1=5, @arg2='five';
execute stmt3 using @arg1, @arg2;
select * from t1 where a>3;
a b
4 four
5 five
prepare stmt4 from 'update t1 set a=? where b=?';
set @arg1=55, @arg2='five';
execute stmt4 using @arg1, @arg2;
select * from t1 where a>3;
a b
4 four
55 five
prepare stmt4 from 'create table t2 (a int)';
execute stmt4;
prepare stmt4 from 'drop table t2';
execute stmt4;
execute stmt4;
ERROR 42S02: Unknown table 't2'
prepare stmt5 from 'select ? + a from t1';
set @a=1;
execute stmt5 using @a;
? + a
2
3
4
5
56
execute stmt5 using @no_such_var;
? + a
NULL
NULL
NULL
NULL
NULL
set @nullvar=1;
set @nullvar=NULL;
execute stmt5 using @nullvar;
? + a
NULL
NULL
NULL
NULL
NULL
set @nullvar2=NULL;
execute stmt5 using @nullvar2;
? + a
NULL
NULL
NULL
NULL
NULL
prepare stmt6 from 'select 1; select2';
ERROR 42000: You have an error in your SQL syntax. Check the manual that corresponds to your MySQL server version for the right syntax to use near '; select2' at line 1
prepare stmt6 from 'insert into t1 values (5,"five"); select2';
ERROR 42000: You have an error in your SQL syntax. Check the manual that corresponds to your MySQL server version for the right syntax to use near '; select2' at line 1
explain prepare stmt6 from 'insert into t1 values (5,"five"); select2';
ERROR 42000: You have an error in your SQL syntax. Check the manual that corresponds to your MySQL server version for the right syntax to use near 'from 'insert into t1 values (5,"five"); select2'' at line 1
create table t2
(
a int
);
insert into t2 values (0);
set @arg00=NULL ;
prepare stmt1 from 'select 1 FROM t2 where a=?' ;
execute stmt1 using @arg00 ;
1
prepare stmt1 from @nosuchvar;
ERROR 42000: You have an error in your SQL syntax. Check the manual that corresponds to your MySQL server version for the right syntax to use near 'NULL' at line 1
set @ivar= 1234;
prepare stmt1 from @ivar;
ERROR 42000: You have an error in your SQL syntax. Check the manual that corresponds to your MySQL server version for the right syntax to use near '1234' at line 1
set @fvar= 123.4567;
prepare stmt1 from @fvar;
ERROR 42000: You have an error in your SQL syntax. Check the manual that corresponds to your MySQL server version for the right syntax to use near '123.4567' at line 1
set @str1 = 'select ?';
set @str2 = convert(@str1 using ucs2);
prepare stmt1 from @str2;
execute stmt1 using @ivar;
?
1234
drop table t1,t2;
mysql-test/r/rpl_ps.result 0 → 100644
View file @ 1a5cca78
stop slave;
drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
reset master;
reset slave;
drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
start slave;
drop table if exists t1;
create table t1(n char(30));
prepare stmt1 from 'insert into t1 values (?)';
set @var1= "from-master-1";
execute stmt1 using @var1;
set @var1= "from-master-2-'',";
execute stmt1 using @var1;
select * from t1;
n
from-master-1
from-master-2-'',
set @var2= 'insert into t1 values (concat("from-var-", ?))';
prepare stmt2 from @var2;
set @var1='from-master-3';
execute stmt2 using @var1;
select * from t1;
n
from-master-1
from-master-2-'',
from-var-from-master-3
drop table t1;
stop slave;
mysql-test/t/ps.test 0 → 100644
View file @ 1a5cca78
#
# SQL Syntax for Prepared Statements test
#
--disable_warnings
drop table if exists t1,t2;
--enable_warnings
create table t1
(
a int primary key,
b char(10)
);
insert into t1 values (1,'one');
insert into t1 values (2,'two');
insert into t1 values (3,'three');
insert into t1 values (4,'four');
# basic functionality
set @a=2;
prepare stmt1 from 'select * from t1 where a <= ?';
execute stmt1 using @a;
set @a=3;
execute stmt1 using @a;
# non-existant statement
--error 1243
deallocate prepare no_such_statement;
--error 1210
execute stmt1;
# Nesting ps commands is not allowed:
--error 1064
prepare stmt2 from 'prepare nested_stmt from "select 1"';
--error 1064
prepare stmt2 from 'execute stmt1';
--error 1064
prepare stmt2 from 'deallocate prepare z';
# PS insert
prepare stmt3 from 'insert into t1 values (?,?)';
set @arg1=5, @arg2='five';
execute stmt3 using @arg1, @arg2;
select * from t1 where a>3;
# PS update
prepare stmt4 from 'update t1 set a=? where b=?';
set @arg1=55, @arg2='five';
execute stmt4 using @arg1, @arg2;
select * from t1 where a>3;
# PS create/delete
prepare stmt4 from 'create table t2 (a int)';
execute stmt4;
prepare stmt4 from 'drop table t2';
execute stmt4;
# Do something that will cause error
--error 1051
execute stmt4;
# placeholders in result field names.
prepare stmt5 from 'select ? + a from t1';
set @a=1;
execute stmt5 using @a;
execute stmt5 using @no_such_var;
set @nullvar=1;
set @nullvar=NULL;
execute stmt5 using @nullvar;
set @nullvar2=NULL;
execute stmt5 using @nullvar2;
# Check that multiple SQL statements are disabled inside PREPARE
--error 1064
prepare stmt6 from 'select 1; select2';
--error 1064
prepare stmt6 from 'insert into t1 values (5,"five"); select2';
# This shouldn't parse
--error 1064
explain prepare stmt6 from 'insert into t1 values (5,"five"); select2';
create table t2
(
a int
);
insert into t2 values (0);
# parameter is NULL
set @arg00=NULL ;
prepare stmt1 from 'select 1 FROM t2 where a=?' ;
execute stmt1 using @arg00 ;
# prepare using variables:
--error 1064
prepare stmt1 from @nosuchvar;
set @ivar= 1234;
--error 1064
prepare stmt1 from @ivar;
set @fvar= 123.4567;
--error 1064
prepare stmt1 from @fvar;
set @str1 = 'select ?';
set @str2 = convert(@str1 using ucs2);
prepare stmt1 from @str2;
execute stmt1 using @ivar;
drop table t1,t2;
mysql-test/t/rpl_ps.test 0 → 100644
View file @ 1a5cca78
#
# Test of replicating user variables
#
source include/master-slave.inc;
#save_master_pos;
#connection slave;
#sync_with_master;
#reset master;
#connection master;
--disable_warnings
drop table if exists t1;
--enable_warnings
create table t1(n char(30));
prepare stmt1 from 'insert into t1 values (?)';
set @var1= "from-master-1";
execute stmt1 using @var1;
set @var1= "from-master-2-'',";
execute stmt1 using @var1;
select * from t1;
set @var2= 'insert into t1 values (concat("from-var-", ?))';
prepare stmt2 from @var2;
set @var1='from-master-3';
execute stmt2 using @var1;
save_master_pos;
connection slave;
sync_with_master;
select * from t1;
connection master;
drop table t1;
save_master_pos;
connection slave;
sync_with_master;
stop slave;
mysys/my_error.c
View file @ 1a5cca78
......@@ -33,6 +33,12 @@ char NEAR errbuff[NRERRBUFFS][ERRMSGSIZE];
nr Errno
MyFlags Flags
... variable list
NOTE
The following subset of printf format is supported:
"%[0-9.-]*l?[sdu]", where all length flags are parsed but ignored.
Additionally "%.*s" is supported and "%.*[ud]" is correctly parsed but
the length value is ignored.
*/
int my_error(int nr,myf MyFlags, ...)
......@@ -43,7 +49,10 @@ int my_error(int nr,myf MyFlags, ...)
reg2 char *endpos;
char * par;
char ebuff[ERRMSGSIZE+20];
int prec_chars; /* output precision */
my_bool prec_supplied;
DBUG_ENTER("my_error");
LINT_INIT(prec_chars); /* protected by prec_supplied */
va_start(ap,MyFlags);
DBUG_PRINT("my", ("nr: %d MyFlags: %d errno: %d", nr, MyFlags, errno));
......@@ -59,7 +68,6 @@ int my_error(int nr,myf MyFlags, ...)
if (tpos[0] != '%')
{
*endpos++= *tpos++; /* Copy ordinary char */
olen++;
continue;
}
if (*++tpos == '%') /* test if %% */
......@@ -68,43 +76,71 @@ int my_error(int nr,myf MyFlags, ...)
}
else
{
/* Skip if max size is used (to be compatible with printf) */
while (my_isdigit(&my_charset_latin1, *tpos) || *tpos == '.' || *tpos == '-')
tpos++;
if (*tpos == 'l') /* Skip 'l' argument */
tpos++;
/*
Skip size/precision flags to be compatible with printf.
The only size/precision flag supported is "%.*s".
If "%.*u" or "%.*d" are encountered, the precision number is read
from the variable argument list but its value is ignored.
*/
prec_supplied= 0;
if (*tpos== '.')
{
tpos++;
olen--;
if (*tpos == '*')
{
tpos++;
olen--;
prec_chars= va_arg(ap, int); /* get length parameter */
prec_supplied= 1;
}
}
if (!prec_supplied)
{
while (my_isdigit(&my_charset_latin1, *tpos) || *tpos == '.' ||
*tpos == '-')
tpos++;
if (*tpos == 'l') /* Skip 'l' argument */
tpos++;
}
if (*tpos == 's') /* String parameter */
{
par = va_arg(ap, char *);
plen = (uint) strlen(par);
par= va_arg(ap, char *);
plen= (uint) strlen(par);
if (prec_supplied && prec_chars > 0)
plen= min((uint)prec_chars, plen);
if (olen + plen < ERRMSGSIZE+2) /* Replace if possible */
{
endpos=strmov(endpos,par);
tpos++;
olen+=plen-2;
continue;
strmake(endpos, par, plen);
endpos+= plen;
tpos++;
olen+= plen-2;
continue;
}
}
else if (*tpos == 'd' || *tpos == 'u') /* Integer parameter */
{
register int iarg;
iarg = va_arg(ap, int);
iarg= va_arg(ap, int);
if (*tpos == 'd')
plen= (uint) (int10_to_str((long) iarg, endpos, -10) - endpos);
else
plen= (uint) (int10_to_str((long) (uint) iarg, endpos, 10) - endpos);
if (olen + plen < ERRMSGSIZE+2) /* Replace parameter if possible */
{
endpos+=plen;
endpos+= plen;
tpos++;
olen+=plen-2;
olen+= plen-2;
continue;
}
}
}
*endpos++='%'; /* % used as % or unknown code */
*endpos++= '%'; /* % used as % or unknown code */
}
*endpos='\0'; /* End of errmessage */
*endpos= '\0'; /* End of errmessage */
va_end(ap);
DBUG_RETURN((*error_handler_hook)(nr, ebuff, MyFlags));
}
......
sql/item.cc
View file @ 1a5cca78
......@@ -255,7 +255,7 @@ bool Item::get_time(TIME *ltime)
return 0;
}
CHARSET_INFO * Item::default_charset() const
CHARSET_INFO *Item::default_charset()
{
return current_thd->variables.collation_connection;
}
......@@ -735,6 +735,70 @@ bool Item_param::set_longdata(const char *str, ulong length)
}
/*
Set parameter value from user variable value.
SYNOPSIS
set_from_user_var
thd Current thread
entry User variable structure (NULL means use NULL value)
RETURN
0 OK
1 Out of memort
*/
bool Item_param::set_from_user_var(THD *thd, const user_var_entry *entry)
{
DBUG_ENTER("Item_param::set_from_user_var");
if (entry && entry->value)
{
item_result_type= entry->type;
switch (entry->type)
{
case REAL_RESULT:
set_double(*(double*)entry->value);
break;
case INT_RESULT:
set_int(*(longlong*)entry->value, 21);
break;
case STRING_RESULT:
{
CHARSET_INFO *fromcs= entry->collation.collation;
CHARSET_INFO *tocs= thd->variables.collation_connection;
uint32 dummy_offset;
value.cs_info.character_set_client= fromcs;
/*
Setup source and destination character sets so that they
are different only if conversion is necessary: this will
make later checks easier.
*/
value.cs_info.final_character_set_of_str_value=
String::needs_conversion(0, fromcs, tocs, &dummy_offset) ?
tocs : fromcs;
/*
Exact value of max_length is not known unless data is converted to
charset of connection, so we have to set it later.
*/
item_type= Item::STRING_ITEM;
item_result_type= STRING_RESULT;
if (set_str((const char *)entry->value, entry->length))
DBUG_RETURN(1);
}
break;
default:
DBUG_ASSERT(0);
set_null();
}
}
else
set_null();
DBUG_RETURN(0);
}
/*
Resets parameter after execution.
......@@ -767,8 +831,6 @@ void Item_param::reset()
int Item_param::save_in_field(Field *field, bool no_conversions)
{
DBUG_ASSERT(current_thd->command == COM_EXECUTE);
field->set_notnull();
switch (state) {
......
sql/item.h
View file @ 1a5cca78
......@@ -245,7 +245,7 @@ class Item {
virtual Item *real_item() { return this; }
virtual Item *get_tmp_table_item(THD *thd) { return copy_or_same(thd); }
CHARSET_INFO *default_charset() const;
static CHARSET_INFO *default_charset();
virtual CHARSET_INFO *compare_collation() { return NULL; }
virtual bool walk(Item_processor processor, byte *arg)
......@@ -489,6 +489,7 @@ class Item_param :public Item
bool set_str(const char *str, ulong length);
bool set_longdata(const char *str, ulong length);
void set_time(TIME *tm, timestamp_type type, uint32 max_length_arg);
bool set_from_user_var(THD *thd, const user_var_entry *entry);
void reset();
/*
Assign placeholder value from bind data.
......
sql/item_func.cc
View file @ 1a5cca78
......@@ -2583,27 +2583,39 @@ longlong Item_func_get_user_var::val_int()
/*
Get variable by name and, if necessary, put the record of variable
use into the binary log.
SYNOPSIS
get_var_with_binlog()
thd Current thread
name Variable name
out_entry [out] variable structure or NULL. The pointer is set
regardless of whether function succeeded or not.
When a user variable is invoked from an update query (INSERT, UPDATE etc),
stores this variable and its value in thd->user_var_events, so that it can be
written to the binlog (will be written just before the query is written, see
log.cc).
RETURN
0 OK
1 Failed to put appropiate record into binary log
*/
void Item_func_get_user_var::fix_length_and_dec()
int get_var_with_binlog(THD *thd, LEX_STRING &name,
user_var_entry **out_entry)
{
THD *thd=current_thd;
BINLOG_USER_VAR_EVENT *user_var_event;
maybe_null=1;
decimals=NOT_FIXED_DEC;
max_length=MAX_BLOB_WIDTH;
if (!(var_entry= get_variable(&thd->user_vars, name, 0)))
null_value= 1;
else
collation.set(var_entry->collation);
user_var_entry *var_entry;
var_entry= get_variable(&thd->user_vars, name, 0);
if (!(opt_bin_log && is_update_query(thd->lex->sql_command)))
return;
{
*out_entry= var_entry;
return 0;
}
if (!var_entry)
{
......@@ -2630,13 +2642,16 @@ void Item_func_get_user_var::fix_length_and_dec()
if (!(var_entry= get_variable(&thd->user_vars, name, 0)))
goto err;
}
/*
If this variable was already stored in user_var_events by this query
(because it's used in more than one place in the query), don't store
it.
*/
else if (var_entry->used_query_id == thd->query_id)
return;
{
/*
If this variable was already stored in user_var_events by this query
(because it's used in more than one place in the query), don't store
it.
*/
*out_entry= var_entry;
return 0;
}
uint size;
/*
......@@ -2671,11 +2686,34 @@ void Item_func_get_user_var::fix_length_and_dec()
var_entry->used_query_id= thd->query_id;
if (insert_dynamic(&thd->user_var_events, (gptr) &user_var_event))
goto err;
return;
*out_entry= var_entry;
return 0;
err:
thd->fatal_error();
*out_entry= var_entry;
return 1;
}
void Item_func_get_user_var::fix_length_and_dec()
{
THD *thd=current_thd;
int error;
maybe_null=1;
decimals=NOT_FIXED_DEC;
max_length=MAX_BLOB_WIDTH;
error= get_var_with_binlog(thd, name, &var_entry);
if (var_entry)
collation.set(var_entry->collation);
else
null_value= 1;
if (error)
thd->fatal_error();
return;
}
......
sql/lex.h
View file @ 1a5cca78
......@@ -133,6 +133,7 @@ static SYMBOL symbols[] = {
{ "DAY_MICROSECOND", SYM(DAY_MICROSECOND_SYM)},
{ "DAY_MINUTE", SYM(DAY_MINUTE_SYM)},
{ "DAY_SECOND", SYM(DAY_SECOND_SYM)},
{ "DEALLOCATE", SYM(DEALLOCATE_SYM)},
{ "DEC", SYM(DECIMAL_SYM)},
{ "DECIMAL", SYM(DECIMAL_SYM)},
{ "DEFAULT", SYM(DEFAULT)},
......@@ -325,6 +326,7 @@ static SYMBOL symbols[] = {
{ "POINT", SYM(POINT_SYM)},
{ "POLYGON", SYM(POLYGON)},
{ "PRECISION", SYM(PRECISION)},
{ "PREPARE", SYM(PREPARE_SYM)},
{ "PREV", SYM(PREV_SYM)},
{ "PRIMARY", SYM(PRIMARY_SYM)},
{ "PRIVILEGES", SYM(PRIVILEGES)},
......
sql/mysql_priv.h
View file @ 1a5cca78
......@@ -348,6 +348,7 @@ inline THD *_current_thd(void)
#include "field.h" /* Field definitions */
#include "protocol.h"
#include "sql_udf.h"
class user_var_entry;
#include "item.h"
typedef Comp_creator* (*chooser_compare_func_creator)(bool invert);
/* sql_parse.cc */
......@@ -639,8 +640,10 @@ int mysqld_show_column_types(THD *thd);
int mysqld_help (THD *thd, const char *text);
/* sql_prepare.cc */
void mysql_stmt_prepare(THD *thd, char *packet, uint packet_length);
int mysql_stmt_prepare(THD *thd, char *packet, uint packet_length,
LEX_STRING *name=NULL);
void mysql_stmt_execute(THD *thd, char *packet, uint packet_length);
void mysql_sql_stmt_execute(THD *thd, LEX_STRING *stmt_name);
void mysql_stmt_free(THD *thd, char *packet);
void mysql_stmt_reset(THD *thd, char *packet);
void mysql_stmt_get_longdata(THD *thd, char *pos, ulong packet_length);
......@@ -1068,6 +1071,9 @@ Item *get_system_var(THD *thd, enum_var_type var_type, LEX_STRING name,
LEX_STRING component);
Item *get_system_var(THD *thd, enum_var_type var_type, const char *var_name,
uint length, const char *item_name);
/* item_func.cc */
int get_var_with_binlog(THD *thd, LEX_STRING &name,
user_var_entry **out_entry);
/* log.cc */
bool flush_error_log(void);
......
sql/mysqld.cc
View file @ 1a5cca78
......@@ -5017,6 +5017,12 @@ struct show_var_st status_vars[]= {
{"Com_unlock_tables", (char*) (com_stat+(uint) SQLCOM_UNLOCK_TABLES),SHOW_LONG},
{"Com_update", (char*) (com_stat+(uint) SQLCOM_UPDATE),SHOW_LONG},
{"Com_update_multi", (char*) (com_stat+(uint) SQLCOM_UPDATE_MULTI),SHOW_LONG},
{"Com_prepare_sql", (char*) (com_stat+(uint) SQLCOM_PREPARE),
SHOW_LONG},
{"Com_execute_sql", (char*) (com_stat+(uint) SQLCOM_EXECUTE),
SHOW_LONG},
{"Com_dealloc_sql", (char*) (com_stat+(uint)
SQLCOM_DEALLOCATE_PREPARE), SHOW_LONG},
{"Connections", (char*) &thread_id, SHOW_LONG_CONST},
{"Created_tmp_disk_tables", (char*) &created_tmp_disk_tables,SHOW_LONG},
{"Created_tmp_files", (char*) &my_tmp_file_created, SHOW_LONG},
......
sql/share/czech/errmsg.txt
View file @ 1a5cca78
......@@ -255,7 +255,7 @@ character-set=latin2
"Key reference and table reference doesn't match",
"Operand should contain %d column(s)",
"Subquery returns more than 1 row",
"Unknown prepared statement handler (%ld) given to %s",
"Unknown prepared statement handler (%.*s) given to %s",
"Help database is corrupt or does not exist",
"Cyclic reference on subqueries",
"Converting column '%s' from %s to %s",
......
sql/share/dutch/errmsg.txt
View file @ 1a5cca78
......@@ -257,7 +257,7 @@ character-set=latin1
"Key reference and table reference doesn't match",
"Operand should contain %d column(s)",
"Subquery returns more than 1 row",
"Unknown prepared statement handler (%ld) given to %s",
"Unknown prepared statement handler (%.*s) given to %s",
"Help database is corrupt or does not exist",
"Cyclic reference on subqueries",
"Converting column '%s' from %s to %s",
......
sql/share/english/errmsg.txt
View file @ 1a5cca78
......@@ -246,7 +246,7 @@ character-set=latin1
"Key reference and table reference doesn't match",
"Operand should contain %d column(s)",
"Subquery returns more than 1 row",
"Unknown prepared statement handler (%ld) given to %s",
"Unknown prepared statement handler (%.*s) given to %s",
"Help database is corrupt or does not exist",
"Cyclic reference on subqueries",
"Converting column '%s' from %s to %s",
......
sql/share/estonian/errmsg.txt
View file @ 1a5cca78
......@@ -251,7 +251,7 @@ character-set=latin7
"Key reference and table reference doesn't match",
"Operand should contain %d column(s)",
"Subquery returns more than 1 row",
"Unknown prepared statement handler (%ld) given to %s",
"Unknown prepared statement handler (%.*s) given to %s",
"Help database is corrupt or does not exist",
"Cyclic reference on subqueries",
"Converting column '%s' from %s to %s",
......
sql/share/french/errmsg.txt
View file @ 1a5cca78
......@@ -246,7 +246,7 @@ character-set=latin1
"Key reference and table reference doesn't match",
"Operand should contain %d column(s)",
"Subquery returns more than 1 row",
"Unknown prepared statement handler (%ld) given to %s",
"Unknown prepared statement handler (%.*s) given to %s",
"Help database is corrupt or does not exist",
"Cyclic reference on subqueries",
"Converting column '%s' from %s to %s",
......
sql/share/german/errmsg.txt
View file @ 1a5cca78
......@@ -258,7 +258,7 @@ character-set=latin1
"Schlüssel- und Tabellenverweis passen nicht zusammen",
"Operand solle %d Spalte(n) enthalten",
"Unterabfrage lieferte mehr als einen Datensatz zurück",
"Unbekannter Prepared-Statement-Handler (%ld) für %s angegeben",
"Unbekannter Prepared-Statement-Handler (%.*s) für %s angegeben",
"Die Hilfe-Datenbank ist beschädigt oder existiert nicht",
"Zyklischer Verweis in Unterabfragen",
"Spalte '%s' wird von %s nach %s umgewandelt",
......
sql/share/greek/errmsg.txt
View file @ 1a5cca78
......@@ -246,7 +246,7 @@ character-set=greek
"Key reference and table reference doesn't match",
"Operand should contain %d column(s)",
"Subquery returns more than 1 row",
"Unknown prepared statement handler (%ld) given to %s",
"Unknown prepared statement handler (%.*s) given to %s",
"Help database is corrupt or does not exist",
"Cyclic reference on subqueries",
"Converting column '%s' from %s to %s",
......
sql/share/hungarian/errmsg.txt
View file @ 1a5cca78
......@@ -248,7 +248,7 @@ character-set=latin2
"Key reference and table reference doesn't match",
"Operand should contain %d column(s)",
"Subquery returns more than 1 row",
"Unknown prepared statement handler (%ld) given to %s",
"Unknown prepared statement handler (%.*s) given to %s",
"Help database is corrupt or does not exist",
"Cyclic reference on subqueries",
"Converting column '%s' from %s to %s",
......
sql/share/italian/errmsg.txt
View file @ 1a5cca78
......@@ -246,7 +246,7 @@ character-set=latin1
"Key reference and table reference doesn't match",
"Operand should contain %d column(s)",
"Subquery returns more than 1 row",
"Unknown prepared statement handler (%ld) given to %s",
"Unknown prepared statement handler (%.*s) given to %s",
"Help database is corrupt or does not exist",
"Cyclic reference on subqueries",
"Converting column '%s' from %s to %s",
......
sql/share/japanese/errmsg.txt
View file @ 1a5cca78
......@@ -248,7 +248,7 @@ character-set=ujis
"Key reference and table reference doesn't match",
"Operand should contain %d column(s)",
"Subquery returns more than 1 row",
"Unknown prepared statement handler (%ld) given to %s",
"Unknown prepared statement handler (%.*s) given to %s",
"Help database is corrupt or does not exist",
"Cyclic reference on subqueries",
"Converting column '%s' from %s to %s",
......
sql/share/korean/errmsg.txt
View file @ 1a5cca78
......@@ -246,7 +246,7 @@ character-set=euckr
"Key reference and table reference doesn't match",
"Operand should contain %d column(s)",
"Subquery returns more than 1 row",
"Unknown prepared statement handler (%ld) given to %s",
"Unknown prepared statement handler (%.*s) given to %s",
"Help database is corrupt or does not exist",
"Cyclic reference on subqueries",
"Converting column '%s' from %s to %s",
......
sql/share/norwegian-ny/errmsg.txt
View file @ 1a5cca78
......@@ -248,7 +248,7 @@ character-set=latin1
"Key reference and table reference doesn't match",
"Operand should contain %d column(s)",
"Subquery returns more than 1 row",
"Unknown prepared statement handler (%ld) given to %s",
"Unknown prepared statement handler (%.*s) given to %s",
"Help database is corrupt or does not exist",
"Cyclic reference on subqueries",
"Converting column '%s' from %s to %s",
......
sql/share/norwegian/errmsg.txt
View file @ 1a5cca78
......@@ -248,7 +248,7 @@ character-set=latin1
"Key reference and table reference doesn't match",
"Operand should contain %d column(s)",
"Subquery returns more than 1 row",
"Unknown prepared statement handler (%ld) given to %s",
"Unknown prepared statement handler (%.*s) given to %s",
"Help database is corrupt or does not exist",
"Cyclic reference on subqueries",
"Converting column '%s' from %s to %s",
......
sql/share/polish/errmsg.txt
View file @ 1a5cca78
......@@ -250,7 +250,7 @@ character-set=latin2
"Key reference and table reference doesn't match",
"Operand should contain %d column(s)",
"Subquery returns more than 1 row",
"Unknown prepared statement handler (%ld) given to %s",
"Unknown prepared statement handler (%.*s) given to %s",
"Help database is corrupt or does not exist",
"Cyclic reference on subqueries",
"Converting column '%s' from %s to %s",
......
sql/share/portuguese/errmsg.txt
View file @ 1a5cca78
......@@ -247,7 +247,7 @@ character-set=latin1
"Referência da chave e referência da tabela não coincidem",
"Operand should contain %d column(s)",
"Subconsulta retorna mais que 1 registro",
"Desconhecido manipulador de declaração preparado (%ld) determinado para %s",
"Desconhecido manipulador de declaração preparado (%.*s) determinado para %s",
"Banco de dado de ajuda corrupto ou não existente",
"Referência cíclica em subconsultas",
"Convertendo coluna '%s' de %s para %s",
......
sql/share/romanian/errmsg.txt
View file @ 1a5cca78
......@@ -250,7 +250,7 @@ character-set=latin2
"Key reference and table reference doesn't match",
"Operand should contain %d column(s)",
"Subquery returns more than 1 row",
"Unknown prepared statement handler (%ld) given to %s",
"Unknown prepared statement handler (%.*s) given to %s",
"Help database is corrupt or does not exist",
"Cyclic reference on subqueries",
"Converting column '%s' from %s to %s",
......
sql/share/russian/errmsg.txt
View file @ 1a5cca78
......@@ -248,7 +248,7 @@ character-set=koi8r
"Key reference and table reference doesn't match",
" %d ",
" ",
"Unknown prepared statement handler (%ld) given to %s",
"Unknown prepared statement handler (%.*s) given to %s",
"Help database is corrupt or does not exist",
" ",
" '%s' %s %s",
......
sql/share/slovak/errmsg.txt
View file @ 1a5cca78
......@@ -254,7 +254,7 @@ character-set=latin2
"Key reference and table reference doesn't match",
"Operand should contain %d column(s)",
"Subquery returns more than 1 row",
"Unknown prepared statement handler (%ld) given to %s",
"Unknown prepared statement handler (%.*s) given to %s",
"Help database is corrupt or does not exist",
"Cyclic reference on subqueries",
"Converting column '%s' from %s to %s",
......
sql/share/spanish/errmsg.txt
View file @ 1a5cca78
......@@ -248,7 +248,7 @@ character-set=latin1
"Referencia de llave y referencia de tabla no coinciden",
"Operando debe tener %d columna(s)",
"Subconsulta retorna mas que 1 línea",
"Desconocido preparado comando handler (%ld) dado para %s",
"Desconocido preparado comando handler (%.*s) dado para %s",
"Base de datos Help está corrupto o no existe",
"Cíclica referencia en subconsultas",
"Convirtiendo columna '%s' de %s para %s",
......
sql/share/swedish/errmsg.txt
View file @ 1a5cca78
......@@ -246,7 +246,7 @@ character-set=latin1
"Nyckelreferensen och tabellreferensen stämmer inte överens",
"Operand should contain %d column(s)",
"Subquery returnerade mer än 1 rad",
"Okänd PREPARED STATEMENT id (%ld) var given till %s",
"Okänd PREPARED STATEMENT id (%.*s) var given till %s",
"Hjälpdatabasen finns inte eller är skadad",
"Cyklisk referens i subqueries",
"Konvertar kolumn '%s' från %s till %s",
......
sql/share/ukrainian/errmsg.txt
View file @ 1a5cca78
......@@ -251,7 +251,7 @@ character-set=koi8u
"Key reference and table reference doesn't match",
" %d æ",
" ¦ i 1 ",
"Unknown prepared statement handler (%ld) given to %s",
"Unknown prepared statement handler (%.*s) given to %s",
"Help database is corrupt or does not exist",
"̦ Ц",
" '%s' %s %s",
......
sql/sql_class.cc
View file @ 1a5cca78
......@@ -78,7 +78,6 @@ extern "C" void free_user_var(user_var_entry *entry)
my_free((char*) entry,MYF(0));
}
bool key_part_spec::operator==(const key_part_spec& other) const
{
return length == other.length && !strcmp(field_name, other.field_name);
......@@ -1302,6 +1301,7 @@ Statement::Statement(THD *thd)
query_length(0),
free_list(0)
{
name.str= NULL;
init_sql_alloc(&mem_root,
thd->variables.query_alloc_block_size,
thd->variables.query_prealloc_size);
......@@ -1385,17 +1385,52 @@ static void delete_statement_as_hash_key(void *key)
delete (Statement *) key;
}
static byte *get_stmt_name_hash_key(Statement *entry, uint *length,
my_bool not_used __attribute__((unused)))
{
*length=(uint) entry->name.length;
return (byte*) entry->name.str;
}
C_MODE_END
Statement_map::Statement_map() :
last_found_statement(0)
{
enum { START_HASH_SIZE = 16 };
hash_init(&st_hash, default_charset_info, START_HASH_SIZE, 0, 0,
enum
{
START_STMT_HASH_SIZE = 16,
START_NAME_HASH_SIZE = 16
};
hash_init(&st_hash, default_charset_info, START_STMT_HASH_SIZE, 0, 0,
get_statement_id_as_hash_key,
delete_statement_as_hash_key, MYF(0));
hash_init(&names_hash, &my_charset_bin, START_NAME_HASH_SIZE, 0, 0,
(hash_get_key) get_stmt_name_hash_key,
NULL,MYF(0));
}
int Statement_map::insert(Statement *statement)
{
int rc= my_hash_insert(&st_hash, (byte *) statement);
if (rc == 0)
last_found_statement= statement;
if (statement->name.str)
{
/*
If there is a statement with the same name, remove it. It is ok to
remove old and fail to insert new one at the same time.
*/
Statement *old_stmt;
if ((old_stmt= find_by_name(&statement->name)))
erase(old_stmt);
if ((rc= my_hash_insert(&names_hash, (byte*)statement)))
hash_delete(&st_hash, (byte*)statement);
}
return rc;
}
bool select_dumpvar::send_data(List<Item> &items)
{
List_iterator_fast<Item_func_set_user_var> li(vars);
......
sql/sql_class.h
View file @ 1a5cca78
......@@ -461,6 +461,7 @@ class Statement
*/
bool allow_sum_func;
LEX_STRING name; /* name for named prepared statements */
LEX *lex; // parse tree descriptor
/*
Points to the query associated with this statement. It's const, but
......@@ -527,8 +528,14 @@ class Statement
/*
Used to seek all existing statements in the connection
Deletes all statements in destructor.
Container for all statements created/used in a connection.
Statements in Statement_map have unique Statement::id (guaranteed by id
assignment in Statement::Statement)
Non-empty statement names are unique too: attempt to insert a new statement
with duplicate name causes older statement to be deleted
Statements are auto-deleted when they are removed from the map and when the
map is deleted.
*/
class Statement_map
......@@ -536,34 +543,47 @@ class Statement_map
public:
Statement_map();
int insert(Statement *statement)
int insert(Statement *statement);
Statement *find_by_name(LEX_STRING *name)
{
int rc= my_hash_insert(&st_hash, (byte *) statement);
if (rc == 0)
last_found_statement= statement;
return rc;
Statement *stmt;
stmt= (Statement*)hash_search(&names_hash, (byte*)name->str,
name->length);
return stmt;
}
Statement *find(ulong id)
{
if (last_found_statement == 0 || id != last_found_statement->id)
last_found_statement= (Statement *) hash_search(&st_hash, (byte *) &id,
sizeof(id));
{
Statement *stmt;
stmt= (Statement *) hash_search(&st_hash, (byte *) &id, sizeof(id));
if (stmt->name.str)
return NULL;
last_found_statement= stmt;
}
return last_found_statement;
}
void erase(Statement *statement)
{
if (statement == last_found_statement)
last_found_statement= 0;
if (statement->name.str)
{
hash_delete(&names_hash, (byte *) statement);
}
hash_delete(&st_hash, (byte *) statement);
}
~Statement_map()
{
hash_free(&st_hash);
hash_free(&names_hash);
}
private:
HASH st_hash;
HASH names_hash;
Statement *last_found_statement;
};
......
sql/sql_lex.h
View file @ 1a5cca78
......@@ -76,6 +76,7 @@ enum enum_sql_command {
SQLCOM_SHOW_COLUMN_TYPES, SQLCOM_SHOW_STORAGE_ENGINES, SQLCOM_SHOW_PRIVILEGES,
SQLCOM_HELP, SQLCOM_DROP_USER, SQLCOM_REVOKE_ALL, SQLCOM_CHECKSUM,
SQLCOM_PREPARE, SQLCOM_EXECUTE, SQLCOM_DEALLOCATE_PREPARE,
/* This should be the last !!! */
SQLCOM_END
};
......@@ -616,6 +617,17 @@ typedef struct st_lex
bool derived_tables;
bool safe_to_cache_query;
ALTER_INFO alter_info;
/* Prepared statements SQL syntax:*/
LEX_STRING prepared_stmt_name; /* Statement name (in all queries) */
/*
Prepared statement query text or name of variable that holds the
prepared statement (in PREPARE ... queries)
*/
LEX_STRING prepared_stmt_code;
/* If true, prepared_stmt_code is a name of variable that holds the query */
bool prepared_stmt_code_is_varref;
/* Names of user variables holding parameters (in EXECUTE) */
List<LEX_STRING> prepared_stmt_params;
st_lex() {}
inline void uncacheable(uint8 cause)
{
......
sql/sql_parse.cc
View file @ 1a5cca78
......@@ -1424,7 +1424,6 @@ bool dispatch_command(enum enum_server_command command, THD *thd,
}
case COM_EXECUTE:
{
thd->free_list= NULL;
mysql_stmt_execute(thd, packet, packet_length);
break;
}
......@@ -1976,7 +1975,99 @@ mysql_execute_command(THD *thd)
}
break;
}
case SQLCOM_PREPARE:
{
char *query_str;
uint query_len;
if (lex->prepared_stmt_code_is_varref)
{
/* This is PREPARE stmt FROM @var. */
String str;
String *pstr;
CHARSET_INFO *to_cs= thd->variables.collation_connection;
bool need_conversion;
user_var_entry *entry;
uint32 unused;
/*
Convert @var contents to string in connection character set. Although
it is known that int/real/NULL value cannot be a valid query we still
convert it for error messages to uniform.
*/
if ((entry=
(user_var_entry*)hash_search(&thd->user_vars,
(byte*)lex->prepared_stmt_code.str,
lex->prepared_stmt_code.length))
&& entry->value)
{
String *pstr;
my_bool is_var_null;
pstr= entry->val_str(&is_var_null, &str, NOT_FIXED_DEC);
DBUG_ASSERT(!is_var_null);
if (!pstr)
send_error(thd, ER_OUT_OF_RESOURCES);
DBUG_ASSERT(pstr == &str);
}
else
str.set("NULL", 4, &my_charset_latin1);
need_conversion=
String::needs_conversion(str.length(), str.charset(), to_cs, &unused);
query_len= need_conversion? (str.length() * to_cs->mbmaxlen) :
str.length();
if (!(query_str= alloc_root(&thd->mem_root, query_len+1)))
send_error(thd, ER_OUT_OF_RESOURCES);
if (need_conversion)
query_len= copy_and_convert(query_str, query_len, to_cs, str.ptr(),
str.length(), str.charset());
else
memcpy(query_str, str.ptr(), str.length());
query_str[query_len]= 0;
}
else
{
query_str= lex->prepared_stmt_code.str;
query_len= lex->prepared_stmt_code.length;
DBUG_PRINT("info", ("PREPARE: %.*s FROM '%.*s' \n",
lex->prepared_stmt_name.length,
lex->prepared_stmt_name.str,
query_len, query_str));
}
thd->command= COM_PREPARE;
if (!mysql_stmt_prepare(thd, query_str, query_len + 1,
&lex->prepared_stmt_name))
send_ok(thd, 0L, 0L, "Statement prepared");
break;
}
case SQLCOM_EXECUTE:
{
DBUG_PRINT("info", ("EXECUTE: %.*s\n",
lex->prepared_stmt_name.length,
lex->prepared_stmt_name.str));
mysql_sql_stmt_execute(thd, &lex->prepared_stmt_name);
lex->prepared_stmt_params.empty();
break;
}
case SQLCOM_DEALLOCATE_PREPARE:
{
Statement* stmt;
DBUG_PRINT("info", ("DEALLOCATE PREPARE: %.*s\n",
lex->prepared_stmt_name.length,
lex->prepared_stmt_name.str));
if ((stmt= thd->stmt_map.find_by_name(&lex->prepared_stmt_name)))
{
thd->stmt_map.erase(stmt);
send_ok(thd);
}
else
{
res= -1;
my_error(ER_UNKNOWN_STMT_HANDLER, MYF(0),
lex->prepared_stmt_name.length, lex->prepared_stmt_name.str,
"DEALLOCATE PREPARE");
}
break;
}
case SQLCOM_DO:
if (tables && ((res= check_table_access(thd, SELECT_ACL, tables,0)) ||
(res= open_and_lock_tables(thd,tables))))
......@@ -3441,7 +3532,6 @@ purposes internal to the MySQL server", MYF(0));
*/
int check_one_table_access(THD *thd, ulong privilege, TABLE_LIST *tables)
{
if (check_access(thd, privilege, tables->db, &tables->grant.privilege,0,0))
return 1;
......
sql/sql_prepare.cc
View file @ 1a5cca78
......@@ -91,16 +91,22 @@ class Prepared_statement: public Statement
bool get_longdata_error;
#ifndef EMBEDDED_LIBRARY
bool (*set_params)(Prepared_statement *st, uchar *data, uchar *data_end,
uchar *read_pos);
uchar *read_pos, String *expanded_query);
#else
bool (*set_params_data)(Prepared_statement *st);
bool (*set_params_data)(Prepared_statement *st, String *expanded_query);
#endif
bool (*set_params_from_vars)(Prepared_statement *stmt,
List<LEX_STRING>& varnames,
String *expanded_query);
public:
Prepared_statement(THD *thd_arg);
virtual ~Prepared_statement();
void setup_set_params();
virtual Statement::Type type() const;
};
static void execute_stmt(THD *thd, Prepared_statement *stmt,
String *expanded_query, bool set_context=false);
/******************************************************************************
Implementation
......@@ -129,7 +135,8 @@ find_prepared_statement(THD *thd, ulong id, const char *where,
if (stmt == 0 || stmt->type() != Statement::PREPARED_STATEMENT)
{
my_error(ER_UNKNOWN_STMT_HANDLER, MYF(0), id, where);
char llbuf[22];
my_error(ER_UNKNOWN_STMT_HANDLER, MYF(0), 22, llstr(id, llbuf), where);
if (se == SEND_ERROR)
send_error(thd);
return 0;
......@@ -594,19 +601,20 @@ static void setup_one_conversion_function(THD *thd, Item_param *param,
*/
static bool insert_params_withlog(Prepared_statement *stmt, uchar *null_array,
uchar *read_pos, uchar *data_end)
uchar *read_pos, uchar *data_end,
String *query)
{
THD *thd= stmt->thd;
Item_param **begin= stmt->param_array;
Item_param **end= begin + stmt->param_count;
uint32 length= 0;
String str, query;
String str;
const String *res;
DBUG_ENTER("insert_params_withlog");
if (query.copy(stmt->query, stmt->query_length, default_charset_info))
if (query->copy(stmt->query, stmt->query_length, default_charset_info))
DBUG_RETURN(1);
for (Item_param **it= begin; it < end; ++it)
......@@ -627,20 +635,18 @@ static bool insert_params_withlog(Prepared_statement *stmt, uchar *null_array,
if (param->convert_str_value(thd))
DBUG_RETURN(1); /* out of memory */
if (query.replace(param->pos_in_query+length, 1, *res))
if (query->replace(param->pos_in_query+length, 1, *res))
DBUG_RETURN(1);
length+= res->length()-1;
}
if (alloc_query(thd, (char *)query.ptr(), query.length()+1))
DBUG_RETURN(1);
DBUG_RETURN(0);
}
static bool insert_params(Prepared_statement *stmt, uchar *null_array,
uchar *read_pos, uchar *data_end)
uchar *read_pos, uchar *data_end,
String *expanded_query)
{
Item_param **begin= stmt->param_array;
Item_param **end= begin + stmt->param_count;
......@@ -705,7 +711,7 @@ static bool setup_conversion_functions(Prepared_statement *stmt,
#else
static bool emb_insert_params(Prepared_statement *stmt)
static bool emb_insert_params(Prepared_statement *stmt, String *expanded_query)
{
THD *thd= stmt->thd;
Item_param **it= stmt->param_array;
......@@ -738,20 +744,20 @@ static bool emb_insert_params(Prepared_statement *stmt)
}
static bool emb_insert_params_withlog(Prepared_statement *stmt)
static bool emb_insert_params_withlog(Prepared_statement *stmt, String *query)
{
THD *thd= stmt->thd;
Item_param **it= stmt->param_array;
Item_param **end= it + stmt->param_count;
MYSQL_BIND *client_param= thd->client_params;
String str, query;
String str;
const String *res;
uint32 length= 0;
DBUG_ENTER("emb_insert_params_withlog");
if (query.copy(stmt->query, stmt->query_length, default_charset_info))
if (query->copy(stmt->query, stmt->query_length, default_charset_info))
DBUG_RETURN(1);
for (; it < end; ++it, ++client_param)
......@@ -770,24 +776,122 @@ static bool emb_insert_params_withlog(Prepared_statement *stmt)
*client_param->length :
client_param->buffer_length);
}
res= param->query_val_str(&str);
if (param->convert_str_value(thd))
DBUG_RETURN(1); /* out of memory */
}
if (query.replace(param->pos_in_query+length, 1, *res))
res= param->query_val_str(&str);
if (param->convert_str_value(thd))
DBUG_RETURN(1); /* out of memory */
if (query->replace(param->pos_in_query+length, 1, *res))
DBUG_RETURN(1);
length+= res->length()-1;
}
if (alloc_query(thd, (char *) query.ptr(), query.length()+1))
DBUG_RETURN(1);
DBUG_RETURN(0);
}
#endif /*!EMBEDDED_LIBRARY*/
/*
Set prepared statement parameters from user variables.
SYNOPSIS
insert_params_from_vars()
stmt Statement
varnames List of variables. Caller must ensure that number of variables
in the list is equal to number of statement parameters
query Ignored
*/
static bool insert_params_from_vars(Prepared_statement *stmt,
List<LEX_STRING>& varnames,
String *query __attribute__((unused)))
{
Item_param **begin= stmt->param_array;
Item_param **end= begin + stmt->param_count;
user_var_entry *entry;
LEX_STRING *varname;
List_iterator<LEX_STRING> var_it(varnames);
DBUG_ENTER("insert_params_from_vars");
for (Item_param **it= begin; it < end; ++it)
{
Item_param *param= *it;
varname= var_it++;
entry= (user_var_entry*)hash_search(&stmt->thd->user_vars,
(byte*) varname->str,
varname->length);
if (param->set_from_user_var(stmt->thd, entry) ||
param->convert_str_value(stmt->thd))
DBUG_RETURN(1);
}
DBUG_RETURN(0);
}
/*
Do the same as insert_params_from_vars but also construct query text for
binary log.
SYNOPSIS
insert_params_from_vars()
stmt Statement
varnames List of variables. Caller must ensure that number of variables
in the list is equal to number of statement parameters
query The query with parameter markers replaced with their values
*/
static bool insert_params_from_vars_with_log(Prepared_statement *stmt,
List<LEX_STRING>& varnames,
String *query)
{
Item_param **begin= stmt->param_array;
Item_param **end= begin + stmt->param_count;
user_var_entry *entry;
LEX_STRING *varname;
DBUG_ENTER("insert_params_from_vars");
List_iterator<LEX_STRING> var_it(varnames);
String str;
const String *res;
uint32 length= 0;
if (query->copy(stmt->query, stmt->query_length, default_charset_info))
DBUG_RETURN(1);
for (Item_param **it= begin; it < end; ++it)
{
Item_param *param= *it;
varname= var_it++;
if (get_var_with_binlog(stmt->thd, *varname, &entry))
DBUG_RETURN(1);
DBUG_ASSERT(entry);
if (param->set_from_user_var(stmt->thd, entry))
DBUG_RETURN(1);
/* Insert @'escaped-varname' instead of parameter in the query */
char *buf, *ptr;
str.length(0);
if (str.reserve(entry->name.length*2+3))
DBUG_RETURN(1);
buf= str.c_ptr_quick();
ptr= buf;
*ptr++= '@';
*ptr++= '\'';
ptr+=
escape_string_for_mysql(&my_charset_utf8_general_ci,
ptr, entry->name.str, entry->name.length);
*ptr++= '\'';
str.length(ptr - buf);
if (param->convert_str_value(stmt->thd))
DBUG_RETURN(1); /* out of memory */
if (query->replace(param->pos_in_query+length, 1, str))
DBUG_RETURN(1);
length+= str.length()-1;
}
DBUG_RETURN(0);
}
/*
Validate INSERT statement:
......@@ -984,7 +1088,7 @@ static int mysql_test_delete(Prepared_statement *stmt,
*/
static int mysql_test_select(Prepared_statement *stmt,
TABLE_LIST *tables)
TABLE_LIST *tables, bool text_protocol)
{
THD *thd= stmt->thd;
LEX *lex= stmt->lex;
......@@ -1016,7 +1120,7 @@ static int mysql_test_select(Prepared_statement *stmt,
if (lex->describe)
{
if (send_prep_stmt(stmt, 0))
if (!text_protocol && send_prep_stmt(stmt, 0))
goto err;
}
else
......@@ -1030,14 +1134,16 @@ static int mysql_test_select(Prepared_statement *stmt,
goto err_prep;
}
if (send_prep_stmt(stmt, lex->select_lex.item_list.elements) ||
if (!text_protocol)
{
if (send_prep_stmt(stmt, lex->select_lex.item_list.elements) ||
thd->protocol_simple.send_fields(&lex->select_lex.item_list, 0)
#ifndef EMBEDDED_LIBRARY
|| net_flush(&thd->net)
|| net_flush(&thd->net)
#endif
)
goto err_prep;
)
goto err_prep;
}
unit->cleanup();
}
thd->free_temporary_memory_pool_for_ps_preparing();
......@@ -1315,7 +1421,7 @@ static int mysql_test_insert_select(Prepared_statement *stmt,
0 success
1 error, sent to client
*/
static int send_prepare_results(Prepared_statement *stmt)
static int send_prepare_results(Prepared_statement *stmt, bool text_protocol)
{
THD *thd= stmt->thd;
LEX *lex= stmt->lex;
......@@ -1352,7 +1458,7 @@ static int send_prepare_results(Prepared_statement *stmt)
break;
case SQLCOM_SELECT:
if ((res= mysql_test_select(stmt, tables)))
if ((res= mysql_test_select(stmt, tables, text_protocol)))
goto error;
/* Statement and field info has already been sent */
DBUG_RETURN(0);
......@@ -1410,7 +1516,7 @@ static int send_prepare_results(Prepared_statement *stmt)
goto error;
}
if (res == 0)
DBUG_RETURN(send_prep_stmt(stmt, 0));
DBUG_RETURN(text_protocol? 0 : send_prep_stmt(stmt, 0));
error:
if (res < 0)
send_error(thd, thd->killed ? ER_SERVER_SHUTDOWN : 0);
......@@ -1451,20 +1557,36 @@ static bool init_param_array(Prepared_statement *stmt)
/*
Parse the query and send the total number of parameters
and resultset metadata information back to client (if any),
without executing the query i.e. without any log/disk
writes. This will allow the queries to be re-executed
without re-parsing during execute.
If parameter markers are found in the query, then store
the information using Item_param along with maintaining a
list in lex->param_array, so that a fast and direct
retrieval can be made without going through all field
items.
Given a query string with parameter markers, create a Prepared Statement
from it and send PS info back to the client.
SYNOPSIS
mysql_stmt_prepare()
packet query to be prepared
packet_length query string length, including ignored trailing NULL or
quote char.
name NULL or statement name. For unnamed statements binary PS
protocol is used, for named statements text protocol is
used.
RETURN
0 OK, statement prepared successfully
other Error
NOTES
This function parses the query and sends the total number of parameters
and resultset metadata information back to client (if any), without
executing the query i.e. without any log/disk writes. This allows the
queries to be re-executed without re-parsing during execute.
If parameter markers are found in the query, then store the information
using Item_param along with maintaining a list in lex->param_array, so
that a fast and direct retrieval can be made without going through all
field items.
*/
void mysql_stmt_prepare(THD *thd, char *packet, uint packet_length)
int mysql_stmt_prepare(THD *thd, char *packet, uint packet_length,
LEX_STRING *name)
{
LEX *lex;
Prepared_statement *stmt= new Prepared_statement(thd);
......@@ -1476,14 +1598,26 @@ void mysql_stmt_prepare(THD *thd, char *packet, uint packet_length)
if (stmt == 0)
{
send_error(thd, ER_OUT_OF_RESOURCES);
DBUG_VOID_RETURN;
DBUG_RETURN(1);
}
if (name)
{
stmt->name.length= name->length;
if (!(stmt->name.str= memdup_root(&stmt->mem_root, (byte*)name->str,
name->length)))
{
delete stmt;
send_error(thd, ER_OUT_OF_RESOURCES);
DBUG_RETURN(1);
}
}
if (thd->stmt_map.insert(stmt))
{
delete stmt;
send_error(thd, ER_OUT_OF_RESOURCES);
DBUG_VOID_RETURN;
DBUG_RETURN(1);
}
thd->stmt_backup.set_statement(thd);
......@@ -1500,7 +1634,7 @@ void mysql_stmt_prepare(THD *thd, char *packet, uint packet_length)
/* Statement map deletes statement on erase */
thd->stmt_map.erase(stmt);
send_error(thd, ER_OUT_OF_RESOURCES);
DBUG_VOID_RETURN;
DBUG_RETURN(1);
}
mysql_log.write(thd, COM_PREPARE, "%s", packet);
......@@ -1512,7 +1646,7 @@ void mysql_stmt_prepare(THD *thd, char *packet, uint packet_length)
error= yyparse((void *)thd) || thd->is_fatal_error ||
init_param_array(stmt) ||
send_prepare_results(stmt);
send_prepare_results(stmt, test(name));
/* restore to WAIT_PRIOR: QUERY_PRIOR is set inside alloc_query */
if (!(specialflag & SPECIAL_NO_PRIOR))
......@@ -1528,10 +1662,12 @@ void mysql_stmt_prepare(THD *thd, char *packet, uint packet_length)
{
/* Statement map deletes statement on erase */
thd->stmt_map.erase(stmt);
stmt= NULL;
/* error is sent inside yyparse/send_prepare_results */
}
else
{
stmt->setup_set_params();
SELECT_LEX *sl= stmt->lex->all_selects_list;
/*
Save WHERE clause pointers, because they may be changed during query
......@@ -1541,8 +1677,10 @@ void mysql_stmt_prepare(THD *thd, char *packet, uint packet_length)
{
sl->prep_where= sl->where;
}
}
DBUG_VOID_RETURN;
DBUG_RETURN(!stmt);
}
/* Reinit statement before execution */
......@@ -1617,13 +1755,21 @@ static void reset_stmt_params(Prepared_statement *stmt)
Executes previously prepared query.
If there is any parameters, then replace markers with the data supplied
from client, and then execute the query.
SYNOPSYS
SYNOPSIS
mysql_stmt_execute()
thd Current thread
packet Query string
packet_length Query string length, including terminator character.
*/
void mysql_stmt_execute(THD *thd, char *packet, uint packet_length)
{
ulong stmt_id= uint4korr(packet);
/*
Query text for binary log, or empty string if the query is not put into
binary log.
*/
String expanded_query;
#ifndef EMBEDDED_LIBRARY
uchar *packet_end= (uchar *) packet + packet_length - 1;
#endif
......@@ -1631,7 +1777,7 @@ void mysql_stmt_execute(THD *thd, char *packet, uint packet_length)
DBUG_ENTER("mysql_stmt_execute");
packet+= 9; /* stmt_id + 5 bytes of flags */
if (!(stmt= find_prepared_statement(thd, stmt_id, "mysql_stmt_execute",
SEND_ERROR)))
DBUG_VOID_RETURN;
......@@ -1645,15 +1791,13 @@ void mysql_stmt_execute(THD *thd, char *packet, uint packet_length)
DBUG_VOID_RETURN;
}
thd->stmt_backup.set_statement(thd);
thd->set_statement(stmt);
reset_stmt_for_execute(stmt);
#ifndef EMBEDDED_LIBRARY
if (stmt->param_count)
{
uchar *null_array= (uchar *) packet;
if (setup_conversion_functions(stmt, (uchar **) &packet, packet_end) ||
stmt->set_params(stmt, null_array, (uchar *) packet, packet_end))
stmt->set_params(stmt, null_array, (uchar *) packet, packet_end,
&expanded_query))
goto set_params_data_err;
}
#else
......@@ -1662,53 +1806,124 @@ void mysql_stmt_execute(THD *thd, char *packet, uint packet_length)
we set params, and also we don't need to parse packet.
So we do it in one function.
*/
if (stmt->param_count && stmt->set_params_data(stmt))
if (stmt->param_count && stmt->set_params_data(stmt, &expanded_query))
goto set_params_data_err;
#endif
thd->protocol= &thd->protocol_prep; // Switch to binary protocol
execute_stmt(thd, stmt, &expanded_query);
thd->protocol= &thd->protocol_simple; // Use normal protocol
DBUG_VOID_RETURN;
if (!(specialflag & SPECIAL_NO_PRIOR))
my_pthread_setprio(pthread_self(),QUERY_PRIOR);
set_params_data_err:
reset_stmt_params(stmt);
my_error(ER_WRONG_ARGUMENTS, MYF(0), "mysql_stmt_execute");
send_error(thd);
DBUG_VOID_RETURN;
}
/*
Execute prepared statement using parameter values from
lex->prepared_stmt_params and send result to the client using text protocol.
*/
void mysql_sql_stmt_execute(THD *thd, LEX_STRING *stmt_name)
{
Prepared_statement *stmt;
/*
TODO:
Also, have checks on basic executions such as mysql_insert(),
mysql_delete(), mysql_update() and mysql_select() to not to
have re-check on setup_* and other things ..
Query text for binary log, or empty string if the query is not put into
binary log.
*/
thd->protocol= &thd->protocol_prep; // Switch to binary protocol
String expanded_query;
DBUG_ENTER("mysql_sql_stmt_execute");
if (!(stmt= (Prepared_statement*)thd->stmt_map.find_by_name(stmt_name)))
{
my_error(ER_UNKNOWN_STMT_HANDLER, MYF(0), stmt_name->length,
stmt_name->str, "EXECUTE");
send_error(thd);
DBUG_VOID_RETURN;
}
if (stmt->param_count != thd->lex->prepared_stmt_params.elements)
{
my_error(ER_WRONG_ARGUMENTS, MYF(0), "EXECUTE");
send_error(thd);
DBUG_VOID_RETURN;
}
thd->free_list= NULL;
thd->stmt_backup.set_statement(thd);
thd->set_statement(stmt);
if (stmt->set_params_from_vars(stmt,
thd->stmt_backup.lex->prepared_stmt_params,
&expanded_query))
{
my_error(ER_WRONG_ARGUMENTS, MYF(0), "EXECUTE");
send_error(thd);
}
execute_stmt(thd, stmt, &expanded_query);
DBUG_VOID_RETURN;
}
/*
Execute prepared statement.
SYNOPSIS
execute_stmt()
thd Current thread
stmt Statement to execute
expanded_query If binary log is enabled, query string with parameter
placeholders replaced with actual values. Otherwise empty
string.
NOTES
Caller must set parameter values and thd::protocol.
thd->free_list is assumed to be garbage.
*/
static void execute_stmt(THD *thd, Prepared_statement *stmt,
String *expanded_query, bool set_context)
{
DBUG_ENTER("execute_stmt");
if (set_context)
{
thd->free_list= NULL;
thd->stmt_backup.set_statement(thd);
thd->set_statement(stmt);
}
reset_stmt_for_execute(stmt);
if (expanded_query->length() &&
alloc_query(thd, (char *)expanded_query->ptr(),
expanded_query->length()+1))
{
my_error(ER_OUTOFMEMORY, 0, expanded_query->length());
DBUG_VOID_RETURN;
}
if (!(specialflag & SPECIAL_NO_PRIOR))
my_pthread_setprio(pthread_self(),QUERY_PRIOR);
mysql_execute_command(thd);
thd->lex->unit.cleanup();
thd->protocol= &thd->protocol_simple; // Use normal protocol
if (!(specialflag & SPECIAL_NO_PRIOR))
my_pthread_setprio(pthread_self(), WAIT_PRIOR);
/* Free Items that were created during this execution of the PS. */
free_items(thd->free_list);
cleanup_items(stmt->free_list);
reset_stmt_params(stmt);
close_thread_tables(thd); // to close derived tables
close_thread_tables(thd); // to close derived tables
thd->set_statement(&thd->stmt_backup);
/*
Free Items that were created during this execution of the PS by query
optimizer.
*/
free_items(thd->free_list);
DBUG_VOID_RETURN;
set_params_data_err:
reset_stmt_params(stmt);
thd->set_statement(&thd->stmt_backup);
my_error(ER_WRONG_ARGUMENTS, MYF(0), "mysql_stmt_execute");
send_error(thd);
DBUG_VOID_RETURN;
}
/*
Reset a prepared statement in case there was a recoverable error.
Reset a prepared statement in case there was a recoverable error.
SYNOPSIS
mysql_stmt_reset()
thd Thread handle
packet Packet with stmt id
thd Thread handle
packet Packet with stmt id
DESCRIPTION
This function resets statement to the state it was right after prepare.
......@@ -1848,8 +2063,14 @@ Prepared_statement::Prepared_statement(THD *thd_arg)
get_longdata_error(0)
{
*last_error= '\0';
if (mysql_bin_log.is_open())
}
void Prepared_statement::setup_set_params()
{
/* Setup binary logging */
if (mysql_bin_log.is_open() && is_update_query(lex->sql_command))
{
set_params_from_vars= insert_params_from_vars_with_log;
#ifndef EMBEDDED_LIBRARY
set_params= insert_params_withlog;
#else
......@@ -1857,14 +2078,16 @@ Prepared_statement::Prepared_statement(THD *thd_arg)
#endif
}
else
{
set_params_from_vars= insert_params_from_vars;
#ifndef EMBEDDED_LIBRARY
set_params= insert_params;
#else
set_params_data= emb_insert_params;
#endif
}
}
Prepared_statement::~Prepared_statement()
{
free_items(free_list);
......
sql/sql_yacc.yy
View file @ 1a5cca78
......@@ -433,6 +433,8 @@ bool my_yyoverflow(short **a, YYSTYPE **b,int *yystacksize);
%token MEDIUMTEXT
%token NUMERIC_SYM
%token PRECISION
%token PREPARE_SYM
%token DEALLOCATE_SYM
%token QUICK
%token REAL
%token SIGNED_SYM
......@@ -725,6 +727,7 @@ bool my_yyoverflow(short **a, YYSTYPE **b,int *yystacksize);
precision subselect_start opt_and charset
subselect_end select_var_list select_var_list_init help opt_len
opt_extended_describe
prepare prepare_src execute deallocate
END_OF_INPUT
%type <NONE>
......@@ -761,10 +764,12 @@ verb_clause:
| checksum
| commit
| create
| deallocate
| delete
| describe
| do
| drop
| execute
| flush
| grant
| handler
......@@ -776,6 +781,7 @@ verb_clause:
| optimize
| keycache
| preload
| prepare
| purge
| rename
| repair
......@@ -796,6 +802,86 @@ verb_clause:
| use
;
deallocate:
DEALLOCATE_SYM PREPARE_SYM ident
{
THD *thd=YYTHD;
LEX *lex= thd->lex;
if (thd->command == COM_PREPARE)
{
yyerror(ER(ER_SYNTAX_ERROR));
YYABORT;
}
lex->sql_command= SQLCOM_DEALLOCATE_PREPARE;
lex->prepared_stmt_name= $3;
};
prepare:
PREPARE_SYM ident FROM prepare_src
{
THD *thd=YYTHD;
LEX *lex= thd->lex;
if (thd->command == COM_PREPARE)
{
yyerror(ER(ER_SYNTAX_ERROR));
YYABORT;
}
lex->sql_command= SQLCOM_PREPARE;
lex->prepared_stmt_name= $2;
};
prepare_src:
TEXT_STRING_sys
{
THD *thd=YYTHD;
LEX *lex= thd->lex;
lex->prepared_stmt_code= $1;
lex->prepared_stmt_code_is_varref= false;
}
| '@' ident_or_text
{
THD *thd=YYTHD;
LEX *lex= thd->lex;
lex->prepared_stmt_code= $2;
lex->prepared_stmt_code_is_varref= true;
};
execute:
EXECUTE_SYM ident
{
THD *thd=YYTHD;
LEX *lex= thd->lex;
if (thd->command == COM_PREPARE)
{
yyerror(ER(ER_SYNTAX_ERROR));
YYABORT;
}
lex->sql_command= SQLCOM_EXECUTE;
lex->prepared_stmt_name= $2;
}
execute_using
{}
;
execute_using:
/* nothing */
| USING execute_var_list
;
execute_var_list:
execute_var_list ',' execute_var_ident
| execute_var_ident
;
execute_var_ident: '@' ident_or_text
{
LEX *lex=Lex;
LEX_STRING *lexstr= (LEX_STRING*)sql_memdup(&$2, sizeof(LEX_STRING));
if (!lexstr || lex->prepared_stmt_params.push_back(lexstr))
YYABORT;
}
;
/* help */
help:
......@@ -4912,6 +4998,7 @@ keyword:
| DATETIME {}
| DATE_SYM {}
| DAY_SYM {}
| DEALLOCATE_SYM {}
| DELAY_KEY_WRITE_SYM {}
| DES_KEY_FILE {}
| DIRECTORY_SYM {}
......@@ -5010,6 +5097,7 @@ keyword:
| PASSWORD {}
| POINT_SYM {}
| POLYGON {}
| PREPARE_SYM {}
| PREV_SYM {}
| PROCESS {}
| PROCESSLIST_SYM {}
......
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