2004-04-05 17:43:37 +02:00
drop table if exists t1,t2;
create table t1
(
a int primary key,
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b char(10)
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);
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;
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ERROR HY000: Unknown prepared statement handler (no_such_statement) given to DEALLOCATE PREPARE
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execute stmt1;
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ERROR HY000: Incorrect arguments to EXECUTE
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prepare stmt2 from 'prepare nested_stmt from "select 1"';
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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
2004-04-05 17:43:37 +02:00
prepare stmt2 from 'execute stmt1';
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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
2004-04-05 17:43:37 +02:00
prepare stmt2 from 'deallocate prepare z';
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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
2004-04-05 17:43:37 +02:00
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
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set @nullvar=1;
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set @nullvar=NULL;
execute stmt5 using @nullvar;
? + a
NULL
NULL
NULL
NULL
NULL
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set @nullvar2=NULL;
execute stmt5 using @nullvar2;
? + a
NULL
NULL
NULL
NULL
NULL
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prepare stmt6 from 'select 1; select2';
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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
2004-04-30 18:08:38 +02:00
prepare stmt6 from 'insert into t1 values (5,"five"); select2';
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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
2004-04-30 18:08:38 +02:00
explain prepare stmt6 from 'insert into t1 values (5,"five"); select2';
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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
2004-05-07 01:32:51 +02:00
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
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prepare stmt1 from @nosuchvar;
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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
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set @ivar= 1234;
prepare stmt1 from @ivar;
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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
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set @fvar= 123.4567;
prepare stmt1 from @fvar;
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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
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drop table t1,t2;
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PREPARE stmt1 FROM "select _utf8 'A' collate utf8_bin = ?";
set @var='A';
EXECUTE stmt1 USING @var;
_utf8 'A' collate utf8_bin = ?
1
DEALLOCATE PREPARE stmt1;
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create table t1 (id int);
prepare stmt1 from "select FOUND_ROWS()";
select SQL_CALC_FOUND_ROWS * from t1;
id
execute stmt1;
FOUND_ROWS()
0
insert into t1 values (1);
select SQL_CALC_FOUND_ROWS * from t1;
id
1
execute stmt1;
FOUND_ROWS()
1
execute stmt1;
FOUND_ROWS()
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1
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deallocate prepare stmt1;
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drop table t1;
create table t1
(
c1 tinyint, c2 smallint, c3 mediumint, c4 int,
c5 integer, c6 bigint, c7 float, c8 double,
c9 double precision, c10 real, c11 decimal(7, 4), c12 numeric(8, 4),
c13 date, c14 datetime, c15 timestamp(14), c16 time,
c17 year, c18 bit, c19 bool, c20 char,
c21 char(10), c22 varchar(30), c23 tinyblob, c24 tinytext,
c25 blob, c26 text, c27 mediumblob, c28 mediumtext,
c29 longblob, c30 longtext, c31 enum('one', 'two', 'three'),
c32 set('monday', 'tuesday', 'wednesday')
) engine = MYISAM ;
create table t2 like t1;
set @stmt= ' explain SELECT (SELECT SUM(c1 + c12 + 0.0) FROM t2 where (t1.c2 - 0e-3) = t2.c2 GROUP BY t1.c15 LIMIT 1) as scalar_s, exists (select 1.0e+0 from t2 where t2.c3 * 9.0000000000 = t1.c4) as exists_s, c5 * 4 in (select c6 + 0.3e+1 from t2) as in_s, (c7 - 4, c8 - 4) in (select c9 + 4.0, c10 + 40e-1 from t2) as in_row_s FROM t1, (select c25 x, c32 y from t2) tt WHERE x * 1 = c25 ' ;
prepare stmt1 from @stmt ;
execute stmt1 ;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
6 DERIVED NULL NULL NULL NULL NULL NULL NULL no matching row in const table
5 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found
4 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found
2004-10-21 23:46:40 +02:00
3 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
2004-06-25 10:37:43 +02:00
execute stmt1 ;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
6 DERIVED NULL NULL NULL NULL NULL NULL NULL no matching row in const table
5 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found
4 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found
2004-10-21 23:46:40 +02:00
3 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
2004-06-25 10:37:43 +02:00
explain SELECT (SELECT SUM(c1 + c12 + 0.0) FROM t2 where (t1.c2 - 0e-3) = t2.c2 GROUP BY t1.c15 LIMIT 1) as scalar_s, exists (select 1.0e+0 from t2 where t2.c3 * 9.0000000000 = t1.c4) as exists_s, c5 * 4 in (select c6 + 0.3e+1 from t2) as in_s, (c7 - 4, c8 - 4) in (select c9 + 4.0, c10 + 40e-1 from t2) as in_row_s FROM t1, (select c25 x, c32 y from t2) tt WHERE x * 1 = c25;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
6 DERIVED NULL NULL NULL NULL NULL NULL NULL no matching row in const table
5 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found
4 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found
2004-10-21 23:46:40 +02:00
3 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
2004-06-25 10:37:43 +02:00
deallocate prepare stmt1;
drop tables t1,t2;
2004-06-25 14:16:00 +02:00
set @arg00=1;
prepare stmt1 from ' create table t1 (m int) as select 1 as m ' ;
execute stmt1 ;
select m from t1;
m
1
drop table t1;
prepare stmt1 from ' create table t1 (m int) as select ? as m ' ;
execute stmt1 using @arg00;
select m from t1;
m
1
2004-06-26 23:55:38 +02:00
deallocate prepare stmt1;
drop table t1;
create table t1 (id int(10) unsigned NOT NULL default '0',
name varchar(64) NOT NULL default '',
PRIMARY KEY (id), UNIQUE KEY `name` (`name`));
insert into t1 values (1,'1'),(2,'2'),(3,'3'),(4,'4'),(5,'5'),(6,'6'),(7,'7');
prepare stmt1 from 'select name from t1 where id=? or id=?';
set @id1=1,@id2=6;
execute stmt1 using @id1, @id2;
name
1
6
select name from t1 where id=1 or id=6;
name
1
6
deallocate prepare stmt1;
2004-06-25 14:16:00 +02:00
drop table t1;
2004-06-27 00:34:05 +02:00
create table t1 ( a int primary key, b varchar(30)) engine = MYISAM ;
prepare stmt1 from ' show table status from test like ''t1%'' ';
execute stmt1;
Name Engine Version Row_format Rows Avg_row_length Data_length Max_data_length Index_length Data_free Auto_increment Create_time Update_time Check_time Collation Checksum Create_options Comment
2004-12-06 01:00:37 +01:00
t1 MyISAM 10 Dynamic 0 0 0 4294967295 1024 0 NULL # # # latin1_swedish_ci NULL
2004-06-27 00:34:05 +02:00
show table status from test like 't1%' ;
Name Engine Version Row_format Rows Avg_row_length Data_length Max_data_length Index_length Data_free Auto_increment Create_time Update_time Check_time Collation Checksum Create_options Comment
2004-12-06 01:00:37 +01:00
t1 MyISAM 10 Dynamic 0 0 0 4294967295 1024 0 NULL # # # latin1_swedish_ci NULL
2004-06-27 00:34:05 +02:00
deallocate prepare stmt1 ;
drop table t1;
Fix for bug#4912 "mysqld crashs in case a statement is executed
a second time". The bug was caused by incompatibility of
negations elimination algorithm and PS: during first statement
execute a subtree with negation was replaced with equivalent
subtree without NOTs.
The problem was that although this transformation was permanent,
items of the new subtree were created in execute-local memory.
The patch adds means to check if it is the first execute of a
prepared statement, and if this is the case, to allocate items
in memory of the prepared statement.
The implementation:
- backports Item_arena from 5.0
- adds Item_arena::is_stmt_prepare(),
Item_arena::is_first_stmt_execute().
- deletes THD::allocate_temporary_pool_for_ps_preparing(),
THD::free_temporary_pool_for_ps_preparing(); they
were redundant.
and adds a few invariants:
- thd->free_list never contains junk (= freed items)
- thd->current_arena is never null. If there is no
prepared statement, it points at the thd.
The rest of the patch contains mainly mechanical changes and
cleanups.
mysql-test/r/ps.result:
Test results updated (test case for Bug#4912)
mysql-test/t/ps.test:
A test case for Bug#4912 "mysqld crashs in case a statement is
executed a second time"
sql/item_cmpfunc.cc:
current_statement -> current_arena
sql/item_subselect.cc:
Statement -> Item_arena, current_statement -> current_arena
sql/item_subselect.h:
Item_subselect does not need to save thd->current_statement.
sql/item_sum.cc:
Statement -> Item_arena
sql/item_sum.h:
Statement -> Item_arena
sql/mysql_priv.h:
Statement -> Item_arena
sql/sql_base.cc:
current_statement -> current_arena
sql/sql_class.cc:
- Item_arena
- convenient set_n_backup_statement, restore_backup_statement
(nice idea, Sanja)
sql/sql_class.h:
- Item_arena: backport from 5.0
- allocate_temporary_pool_for_ps_preparing,
free_temporary_pool_for_ps_preparing removed.
sql/sql_derived.cc:
current_statement -> current_arena
sql/sql_lex.cc:
current_statement -> current_arena
sql/sql_parse.cc:
Deploy invariant that thd->free_list never contains junk items
(backport from 5.0).
sql/sql_prepare.cc:
- backporting Item_arena
- no need to allocate_temporary_pool_for_ps_preparing().
sql/sql_select.cc:
Fix for bug#4912 "mysqld crashs in case a statement is
executed a second time": if this is the first execute of
a prepared statement, negation elimination is
done in memory of the prepared statement.
sql/sql_union.cc:
Backporting Item_arena from 5.0.
2004-08-21 00:02:46 +02:00
create table t1(a varchar(2), b varchar(3));
prepare stmt1 from "select a, b from t1 where (not (a='aa' and b < 'zzz'))";
execute stmt1;
a b
execute stmt1;
a b
deallocate prepare stmt1;
2004-08-24 18:17:11 +02:00
drop table t1;
prepare stmt1 from "select 1 into @var";
execute stmt1;
execute stmt1;
prepare stmt1 from "create table t1 select 1 as i";
execute stmt1;
drop table t1;
execute stmt1;
prepare stmt1 from "insert into t1 select i from t1";
execute stmt1;
execute stmt1;
prepare stmt1 from "select * from t1 into outfile 'f1.txt'";
execute stmt1;
deallocate prepare stmt1;
drop table t1;
2004-08-29 17:44:28 +02:00
prepare stmt1 from 'select 1';
prepare STMT1 from 'select 2';
execute sTmT1;
2
2
deallocate prepare StMt1;
deallocate prepare Stmt1;
ERROR HY000: Unknown prepared statement handler (Stmt1) given to DEALLOCATE PREPARE
set names utf8;
prepare `ü` from 'select 1234';
execute `ü` ;
1234
1234
set names latin1;
execute `<60> `;
1234
1234
set names default;
2004-09-03 21:28:49 +02:00
create table t1 (a varchar(10)) charset=utf8;
insert into t1 (a) values ('yahoo');
set character_set_connection=latin1;
prepare stmt from 'select a from t1 where a like ?';
set @var='google';
execute stmt using @var;
a
execute stmt using @var;
a
deallocate prepare stmt;
drop table t1;
2004-09-17 23:10:09 +02:00
create table t1 (a bigint(20) not null primary key auto_increment);
insert into t1 (a) values (null);
select * from t1;
a
1
prepare stmt from "insert into t1 (a) values (?)";
set @var=null;
execute stmt using @var;
select * from t1;
a
1
2
drop table t1;
create table t1 (a timestamp not null);
prepare stmt from "insert into t1 (a) values (?)";
execute stmt using @var;
select * from t1;
deallocate prepare stmt;
drop table t1;
2004-09-23 16:01:55 +02:00
prepare stmt from "select 'abc' like convert('abc' using utf8)";
execute stmt;
'abc' like convert('abc' using utf8)
1
execute stmt;
'abc' like convert('abc' using utf8)
1
deallocate prepare stmt;
2004-10-08 00:21:19 +02:00
create table t1 ( a bigint );
prepare stmt from 'select a from t1 where a between ? and ?';
set @a=1;
execute stmt using @a, @a;
a
execute stmt using @a, @a;
a
execute stmt using @a, @a;
a
drop table t1;
deallocate prepare stmt;
A fix and test case for Bug#5987 "subselect in bool function
crashes server (prepared statements)": the bug was that all boolean
items always recovered its original arguments at statement cleanup
stage.
This collided with Item_subselect::select_transformer, which tries to
permanently change the item tree to use a transformed subselect instead of
original one.
So we had this call sequence for prepare:
mysql_stmt_prepare -> JOIN::prepare ->
Item_subselect::fix_fields -> the item tree gets transformed ->
Item_bool_rowready_func2::cleanup, item tree is recovered to original
state, while it shouldn't have been;
mysql_stmt_execute -> attempts to execute a broken tree -> crash.
Now instead of bluntly recovering all arguments of bool functions in
Item_bool_rowready_func2::cleanup, we recover only those
which were changed, and do it in one place.
There still would exist a possibility for a collision with subselect
tranformation, if permanent and temporary changes were performed at the
same stage.
But fortunately subselect transformation is always done first, so it
doesn't conflict with the optimization done by propogate_cond_constants.
Now we have:
mysql_stmt_prepare -> JOIN::prepare -> subselect transformation
permanently changes the tree -> cleanup doesn't recover anything,
because nothing was registered for recovery.
mysql_stmt_execute -> JOIN::prepare (the tree is already transformed,
so it doesn't change), JOIN::optimize ->
propogate_cond_constants -> temporary changes the item tree
with constants -> JOIN::execute -> cleanup ->
the changes done by propogate_cond_constants are recovered, as
they were registered for recovery.
mysql-test/r/ps.result:
Bug#5987: test results fixed.
mysql-test/t/ps.test:
A test for bug#5987 "subselect in bool function crashes server
(prepared statements)"
sql/item.cc:
resolve_const_item is now responsible to register all changes of the
item tree for recovery
sql/item.h:
resolve_const_item signagture changed
sql/item_cmpfunc.h:
Arguments of boolean functions are now recovered using the
centralized registry of THD.
sql/sql_class.cc:
It's crucial to add new items to the beginning of the recovery list,
so that the recovery is performed in LIFO mode: otherwise if we
change one node of a tree twice, it will be recovered to some intermediate
state.
sql/sql_select.cc:
change_cond_ref_to_const and propogate_cond_constants are now responsible
to register all changes of the item tree for recovery.
The recovery is done using the centralized THD registry of
changed tree items.
2004-10-10 00:39:22 +02:00
create table t1 (a int);
prepare stmt from "select * from t1 where 1 > (1 in (SELECT * FROM t1))";
execute stmt;
a
execute stmt;
a
execute stmt;
a
drop table t1;
deallocate prepare stmt;
2004-10-12 19:16:07 +02:00
create table t1 (a int, b int);
insert into t1 (a, b) values (1,1), (1,2), (2,1), (2,2);
prepare stmt from
"explain select * from t1 where t1.a=2 and t1.a=t1.b and t1.b > 1 + ?";
set @v=5;
execute stmt using @v;
id select_type table type possible_keys key key_len ref rows Extra
- - - - - - - - NULL Impossible WHERE
set @v=0;
execute stmt using @v;
id select_type table type possible_keys key key_len ref rows Extra
- - - - - - - - 4 Using where
set @v=5;
execute stmt using @v;
id select_type table type possible_keys key key_len ref rows Extra
- - - - - - - - NULL Impossible WHERE
drop table t1;
deallocate prepare stmt;
2004-10-14 00:53:59 +02:00
create table t1 (a int);
insert into t1 (a) values (1), (2), (3), (4);
set @precision=10000000000;
select rand(),
cast(rand(10)*@precision as unsigned integer),
cast(rand(a)*@precision as unsigned integer) from t1;
rand() cast(rand(10)*@precision as unsigned integer) cast(rand(a)*@precision as unsigned integer)
- 6570515219 -
- 1282061302 -
- 6698761160 -
- 9647622201 -
prepare stmt from
"select rand(),
cast(rand(10)*@precision as unsigned integer),
cast(rand(a)*@precision as unsigned integer),
cast(rand(?)*@precision as unsigned integer) from t1";
set @var=1;
execute stmt using @var;
rand() cast(rand(10)*@precision as unsigned integer) cast(rand(a)*@precision as unsigned integer) cast(rand(?)*@precision as unsigned integer)
- 6570515219 - 4054035371
- 1282061302 - 8716141803
- 6698761160 - 1418603212
- 9647622201 - 944590960
set @var=2;
execute stmt using @var;
rand() cast(rand(10)*@precision as unsigned integer) cast(rand(a)*@precision as unsigned integer) cast(rand(?)*@precision as unsigned integer)
- 6570515219 1559528654 6555866465
- 1282061302 6238114970 1223466192
- 6698761160 6511989195 6449731873
- 9647622201 3845601374 8578261098
set @var=3;
execute stmt using @var;
rand() cast(rand(10)*@precision as unsigned integer) cast(rand(a)*@precision as unsigned integer) cast(rand(?)*@precision as unsigned integer)
- 6570515219 1559528654 9057697559
- 1282061302 6238114970 3730790581
- 6698761160 6511989195 1480860534
- 9647622201 3845601374 6211931236
drop table t1;
deallocate prepare stmt;
2004-10-22 12:47:35 +02:00
create database mysqltest1;
create table t1 (a int);
create table mysqltest1.t1 (a int);
select * from t1, mysqltest1.t1;
a a
prepare stmt from "select * from t1, mysqltest1.t1";
execute stmt;
a a
execute stmt;
a a
execute stmt;
a a
drop table t1;
drop table mysqltest1.t1;
drop database mysqltest1;
deallocate prepare stmt;
select '1.1' as a, '1.2' as a UNION SELECT '2.1', '2.2';
a a
1.1 1.2
2.1 2.2
prepare stmt from
"select '1.1' as a, '1.2' as a UNION SELECT '2.1', '2.2'";
execute stmt;
a a
1.1 1.2
2.1 2.2
execute stmt;
a a
1.1 1.2
2.1 2.2
execute stmt;
a a
1.1 1.2
2.1 2.2
deallocate prepare stmt;
2004-10-22 20:51:16 +02:00
create table t1 (a int);
2004-10-22 21:05:48 +02:00
insert into t1 values (1),(2),(3);
create table t2 select * from t1;
prepare stmt FROM 'create table t2 select * from t1';
drop table t2;
execute stmt;
drop table t2;
execute stmt;
execute stmt;
ERROR 42S01: Table 't2' already exists
drop table t2;
execute stmt;
drop table t1,t2;
deallocate prepare stmt;
create table t1 (a int);
2004-10-22 20:51:16 +02:00
insert into t1 (a) values (1), (2), (3), (4), (5), (6), (7), (8), (9), (10);
prepare stmt from "select sql_calc_found_rows * from t1 limit 2";
execute stmt;
a
1
2
select found_rows();
found_rows()
10
execute stmt;
a
1
2
select found_rows();
found_rows()
10
execute stmt;
a
1
2
select found_rows();
found_rows()
10
2004-10-22 21:05:48 +02:00
deallocate prepare stmt;
drop table t1;
2004-10-23 02:30:27 +02:00
CREATE TABLE t1 (N int, M tinyint);
INSERT INTO t1 VALUES (1,0),(1,0),(2,0),(2,0),(3,0);
PREPARE stmt FROM 'UPDATE t1 AS P1 INNER JOIN (SELECT N FROM t1 GROUP BY N HAVING COUNT(M) > 1) AS P2 ON P1.N = P2.N SET P1.M = 2';
EXECUTE stmt;
DEALLOCATE PREPARE stmt;
DROP TABLE t1;
2004-11-21 10:04:27 +01:00
prepare stmt from "select ? is null, ? is not null, ?";
select @no_such_var is null, @no_such_var is not null, @no_such_var;
@no_such_var is null @no_such_var is not null @no_such_var
1 0 NULL
execute stmt using @no_such_var, @no_such_var, @no_such_var;
? is null ? is not null ?
1 0 NULL
set @var='abc';
select @var is null, @var is not null, @var;
@var is null @var is not null @var
0 1 abc
execute stmt using @var, @var, @var;
? is null ? is not null ?
0 1 abc
set @var=null;
select @var is null, @var is not null, @var;
@var is null @var is not null @var
1 0 NULL
execute stmt using @var, @var, @var;
? is null ? is not null ?
1 0 NULL
2004-12-08 22:37:17 +01:00
create table t1 (pnum char(3));
create table t2 (pnum char(3));
prepare stmt from "select pnum from t2 having pnum in (select 'p1' from t1)";
execute stmt;
pnum
execute stmt;
pnum
execute stmt;
pnum
deallocate prepare stmt;
drop table t1, t2;
2004-11-05 20:02:07 +01:00
create table t1 (a varchar(20));
insert into t1 values ('foo');
prepare stmt FROM 'SELECT char_length (a) FROM t1';
ERROR 42000: FUNCTION test.char_length does not exist
drop table t1;
2005-03-02 17:00:48 +01:00
prepare stmt from "SELECT SQL_CALC_FOUND_ROWS 'foo' UNION SELECT 'bar' LIMIT 0";
execute stmt;
foo
SELECT FOUND_ROWS();
FOUND_ROWS()
2
execute stmt;
foo
SELECT FOUND_ROWS();
FOUND_ROWS()
2
deallocate prepare stmt;
2005-03-03 15:38:59 +01:00
create table t1 (a char(3) not null, b char(3) not null,
c char(3) not null, primary key (a, b, c));
create table t2 like t1;
prepare stmt from
"select t1.a from (t1 left outer join t2 on t2.a=1 and t1.b=t2.b)
where t1.a=1";
execute stmt;
a
execute stmt;
a
execute stmt;
a
prepare stmt from
"select t1.a, t1.b, t1.c, t2.a, t2.b, t2.c from
(t1 left outer join t2 on t2.a=? and t1.b=t2.b)
left outer join t2 t3 on t3.a=? where t1.a=?";
set @a:=1, @b:=1, @c:=1;
execute stmt using @a, @b, @c;
a b c a b c
execute stmt using @a, @b, @c;
a b c a b c
execute stmt using @a, @b, @c;
a b c a b c
deallocate prepare stmt;
drop table t1,t2;
Fix for bug#9383: INFORMATION_SCHEMA.COLUMNS, JOIN, Crash, prepared statement
restore original 'lex->query_tables' table list after
processing of information schema table
remove unnecessary operations
mysql-test/r/ps.result:
Fix for bug#9383: INFORMATION_SCHEMA.COLUMNS, JOIN, Crash, prepared statement
mysql-test/t/ps.test:
Fix for bug#9383: INFORMATION_SCHEMA.COLUMNS, JOIN, Crash, prepared statement
sql/sql_lex.h:
Fix for bug#9383: INFORMATION_SCHEMA.COLUMNS, JOIN, Crash, prepared statement
sql/sql_show.cc:
Fix for bug#9383: INFORMATION_SCHEMA.COLUMNS, JOIN, Crash, prepared statement
2005-04-05 13:09:56 +02:00
SET @aux= "SELECT COUNT(*)
FROM INFORMATION_SCHEMA.COLUMNS A,
INFORMATION_SCHEMA.COLUMNS B
WHERE A.TABLE_SCHEMA = B.TABLE_SCHEMA
AND A.TABLE_NAME = B.TABLE_NAME
AND A.COLUMN_NAME = B.COLUMN_NAME AND
A.TABLE_NAME = 'user'";
prepare my_stmt from @aux;
execute my_stmt;
COUNT(*)
37
execute my_stmt;
COUNT(*)
37
execute my_stmt;
COUNT(*)
37
deallocate prepare my_stmt;
2005-04-13 21:36:15 +02:00
drop procedure if exists p1|
drop table if exists t1|
create table t1 (id int)|
insert into t1 values(1)|
create procedure p1(a int, b int)
begin
declare c int;
select max(id)+1 into c from t1;
insert into t1 select a+b;
insert into t1 select a-b;
insert into t1 select a-c;
end|
set @a= 3, @b= 4|
prepare stmt from "call p1(?, ?)"|
execute stmt using @a, @b|
execute stmt using @a, @b|
select * from t1|
id
1
7
-1
1
7
-1
-5
deallocate prepare stmt|
drop procedure p1|
drop table t1|
2005-05-04 14:53:10 +02:00
drop table if exists t1;
Warnings:
Note 1051 Unknown table 't1'
create table t1 (c1 int(11) not null, c2 int(11) not null,
primary key (c1,c2), key c2 (c2), key c1 (c1));
insert into t1 values (200887, 860);
insert into t1 values (200887, 200887);
select * from t1 where (c1=200887 and c2=200887) or c2=860;
c1 c2
200887 860
200887 200887
prepare stmt from
"select * from t1 where (c1=200887 and c2=200887) or c2=860";
execute stmt;
c1 c2
200887 860
200887 200887
prepare stmt from
"select * from t1 where (c1=200887 and c2=?) or c2=?";
set @a=200887, @b=860;
execute stmt using @a, @b;
c1 c2
200887 860
200887 200887
deallocate prepare stmt;
2005-05-05 10:55:09 +02:00
drop table t1;
create table t1 (
id bigint(20) not null auto_increment,
code varchar(20) character set utf8 collate utf8_bin not null default '',
company_name varchar(250) character set utf8 collate utf8_bin default null,
setup_mode tinyint(4) default null,
start_date datetime default null,
primary key (id), unique key code (code)
);
create table t2 (
id bigint(20) not null auto_increment,
email varchar(250) character set utf8 collate utf8_bin default null,
name varchar(250) character set utf8 collate utf8_bin default null,
t1_id bigint(20) default null,
password varchar(250) character set utf8 collate utf8_bin default null,
primary_contact tinyint(4) not null default '0',
email_opt_in tinyint(4) not null default '1',
primary key (id), unique key email (email), key t1_id (t1_id),
constraint t2_fk1 foreign key (t1_id) references t1 (id)
);
insert into t1 values
(1, 'demo', 'demo s', 0, current_date()),
(2, 'code2', 'name 2', 0, current_date()),
(3, 'code3', 'name 3', 0, current_date());
insert into t2 values
(2, 'email1', 'name1', 3, 'password1', 0, 0),
(3, 'email2', 'name1', 1, 'password2', 1, 0),
(5, 'email3', 'name3', 2, 'password3', 0, 0);
prepare stmt from 'select t2.id from t2, t1 where (t1.id=? and t2.t1_id=t1.id)';
set @a=1;
execute stmt using @a;
id
3
select t2.id from t2, t1 where (t1.id=1 and t2.t1_id=t1.id);
id
3
deallocate prepare stmt;
drop table t1, t2;