drop table if exists t1,t2; drop database if exists client_test_db; 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: Incorrect 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 drop table t1,t2; deallocate prepare stmt3; deallocate prepare stmt4; deallocate prepare stmt5; 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; 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() 1 deallocate prepare stmt1; 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, 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 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 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 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 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 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 deallocate prepare stmt1; drop tables t1,t2; 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 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; drop table t1; 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 t1 MyISAM 10 Dynamic 0 0 0 4294967295 1024 0 NULL # # # latin1_swedish_ci NULL 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 t1 MyISAM 10 Dynamic 0 0 0 4294967295 1024 0 NULL # # # latin1_swedish_ci NULL deallocate prepare stmt1 ; drop table t1; 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; 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; 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 `�`; 1234 1234 deallocate prepare `�`; set names default; 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; 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; 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; 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; 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; 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; 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) from t1; rand() cast(rand(10)*@precision as unsigned integer) - 6570515220 - 1282061302 - 6698761160 - 9647622201 prepare stmt from "select rand(), cast(rand(10)*@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(?)*@precision as unsigned integer) - 6570515220 - - 1282061302 - - 6698761160 - - 9647622201 - set @var=2; execute stmt using @var; rand() cast(rand(10)*@precision as unsigned integer) cast(rand(?)*@precision as unsigned integer) - 6570515220 6555866465 - 1282061302 1223466193 - 6698761160 6449731874 - 9647622201 8578261098 set @var=3; execute stmt using @var; rand() cast(rand(10)*@precision as unsigned integer) cast(rand(?)*@precision as unsigned integer) - 6570515220 9057697560 - 1282061302 3730790581 - 6698761160 1480860535 - 9647622201 6211931236 drop table t1; deallocate prepare stmt; 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; create table t1 (a int); 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); 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 deallocate prepare stmt; drop table t1; 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; 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 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; 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; 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; 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; 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; 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| 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; 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; create table t1 (a int); insert into t1 (a) values (1), (2), (3), (4), (5), (6), (7), (8), (9), (10); prepare stmt from "select * from t1 limit ?, ?"; set @offset=0, @limit=1; execute stmt using @offset, @limit; a 1 select * from t1 limit 0, 1; a 1 set @offset=3, @limit=2; execute stmt using @offset, @limit; a 4 5 select * from t1 limit 3, 2; a 4 5 prepare stmt from "select * from t1 limit ?"; execute stmt using @limit; a 1 2 prepare stmt from "select * from t1 where a in (select a from t1 limit ?)"; ERROR 42000: This version of MySQL doesn't yet support 'LIMIT & IN/ALL/ANY/SOME subquery' prepare stmt from "select * from t1 union all select * from t1 limit ?, ?"; set @offset=9; set @limit=2; execute stmt using @offset, @limit; a 10 1 prepare stmt from "(select * from t1 limit ?, ?) union all (select * from t1 limit ?, ?) order by a limit ?"; execute stmt using @offset, @limit, @offset, @limit, @limit; a 10 10 drop table t1; deallocate prepare stmt; create table t1 (id int); prepare stmt from "insert into t1 (id) select id from t1 union select id from t1"; execute stmt; execute stmt; deallocate prepare stmt; drop table t1; create table t1 ( id int(11) unsigned not null primary key auto_increment, partner_id varchar(35) not null, t1_status_id int(10) unsigned ); insert into t1 values ("1", "partner1", "10"), ("2", "partner2", "10"), ("3", "partner3", "10"), ("4", "partner4", "10"); create table t2 ( id int(11) unsigned not null default '0', t1_line_id int(11) unsigned not null default '0', article_id varchar(20), sequence int(11) not null default '0', primary key (id,t1_line_id) ); insert into t2 values ("1", "1", "sup", "0"), ("2", "1", "sup", "1"), ("2", "2", "sup", "2"), ("2", "3", "sup", "3"), ("2", "4", "imp", "4"), ("3", "1", "sup", "0"), ("4", "1", "sup", "0"); create table t3 ( id int(11) not null default '0', preceeding_id int(11) not null default '0', primary key (id,preceeding_id) ); create table t4 ( user_id varchar(50) not null, article_id varchar(20) not null, primary key (user_id,article_id) ); insert into t4 values("nicke", "imp"); prepare stmt from 'select distinct t1.partner_id from t1 left join t3 on t1.id = t3.id left join t1 pp on pp.id = t3.preceeding_id where exists ( select * from t2 as pl_inner where pl_inner.id = t1.id and pl_inner.sequence <= ( select min(sequence) from t2 pl_seqnr where pl_seqnr.id = t1.id ) and exists ( select * from t4 where t4.article_id = pl_inner.article_id and t4.user_id = ? ) ) and t1.id = ? group by t1.id having count(pp.id) = 0'; set @user_id = 'nicke'; set @id = '2'; execute stmt using @user_id, @id; partner_id execute stmt using @user_id, @id; partner_id deallocate prepare stmt; drop table t1, t2, t3, t4; prepare stmt from 'select ?=?'; set @a='CHRISTINE '; set @b='CHRISTINE'; execute stmt using @a, @b; ?=? 1 execute stmt using @a, @b; ?=? 1 set @a=1, @b=2; execute stmt using @a, @b; ?=? 0 set @a='CHRISTINE '; set @b='CHRISTINE'; execute stmt using @a, @b; ?=? 1 deallocate prepare stmt; create table t1 (a int); prepare stmt from "select ??"; 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 '?' at line 1 prepare stmt from "select ?FROM t1"; 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 t1' at line 1 prepare stmt from "select FROM t1 WHERE?=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 'FROM t1 WHERE?=1' at line 1 prepare stmt from "update t1 set a=a+?WHERE 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 '?WHERE 1' at line 1 select ?; 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 '?' at line 1 select ??; 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 '??' at line 1 select ? from t1; 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 t1' at line 1 drop table t1; CREATE TABLE b12651_T1(a int) ENGINE=MYISAM; CREATE TABLE b12651_T2(b int) ENGINE=MYISAM; CREATE VIEW b12651_V1 as SELECT b FROM b12651_T2; PREPARE b12651 FROM 'SELECT 1 FROM b12651_T1 WHERE a IN (SELECT b FROM b12651_V1)'; EXECUTE b12651; 1 DROP VIEW b12651_V1; DROP TABLE b12651_T1, b12651_T2; DEALLOCATE PREPARE b12651; prepare stmt from "select @@time_zone"; execute stmt; @@time_zone SYSTEM set @@time_zone:='Japan'; execute stmt; @@time_zone Japan prepare stmt from "select @@tx_isolation"; execute stmt; @@tx_isolation REPEATABLE-READ set transaction isolation level read committed; execute stmt; @@tx_isolation READ-COMMITTED set transaction isolation level serializable; execute stmt; @@tx_isolation SERIALIZABLE set @@tx_isolation=default; execute stmt; @@tx_isolation REPEATABLE-READ deallocate prepare stmt; prepare stmt from "create temporary table t1 (letter enum('','a','b','c') not null)"; execute stmt; drop table t1; execute stmt; drop table t1; execute stmt; drop table t1; set names latin1; prepare stmt from "create table t1 (a enum('test') default 'test') character set utf8"; execute stmt; drop table t1; execute stmt; drop table t1; execute stmt; drop table t1; set names default; deallocate prepare stmt; create table t1 ( word_id mediumint(8) unsigned not null default '0', formatted varchar(20) not null default '' ); insert into t1 values (80,'pendant'), (475,'pretendants'), (989,'tendances'), (1019,'cependant'),(1022,'abondance'),(1205,'independants'), (13,'lessiver'),(25,'lambiner'),(46,'situer'),(71,'terminer'), (82,'decrocher'); select count(*) from t1 where formatted like '%NDAN%'; count(*) 6 select count(*) from t1 where formatted like '%ER'; count(*) 5 prepare stmt from "select count(*) from t1 where formatted like ?"; set @like="%NDAN%"; execute stmt using @like; count(*) 6 set @like="%ER"; execute stmt using @like; count(*) 5 set @like="%NDAN%"; execute stmt using @like; count(*) 6 set @like="%ER"; execute stmt using @like; count(*) 5 deallocate prepare stmt; drop table t1; prepare stmt from 'create table t1 (a varchar(10) character set utf8)'; execute stmt; insert into t1 (a) values (repeat('a', 20)); select length(a) from t1; length(a) 10 drop table t1; execute stmt; insert into t1 (a) values (repeat('a', 20)); select length(a) from t1; length(a) 10 drop table t1; deallocate prepare stmt; create table t1 (col1 integer, col2 integer); insert into t1 values(100,100),(101,101),(102,102),(103,103); prepare stmt from 'select col1, col2 from t1 where (col1, col2) in ((?,?))'; set @a=100, @b=100; execute stmt using @a,@b; col1 col2 100 100 set @a=101, @b=101; execute stmt using @a,@b; col1 col2 101 101 set @a=102, @b=102; execute stmt using @a,@b; col1 col2 102 102 set @a=102, @b=103; execute stmt using @a,@b; col1 col2 deallocate prepare stmt; drop table t1; set @old_max_prepared_stmt_count= @@max_prepared_stmt_count; show variables like 'max_prepared_stmt_count'; Variable_name Value max_prepared_stmt_count 16382 show variables like 'prepared_stmt_count'; Variable_name Value prepared_stmt_count 0 select @@max_prepared_stmt_count, @@prepared_stmt_count; @@max_prepared_stmt_count @@prepared_stmt_count 16382 0 set global max_prepared_stmt_count=-1; select @@max_prepared_stmt_count; @@max_prepared_stmt_count 0 set global max_prepared_stmt_count=10000000000000000; select @@max_prepared_stmt_count; @@max_prepared_stmt_count 1048576 set global max_prepared_stmt_count=default; select @@max_prepared_stmt_count; @@max_prepared_stmt_count 16382 set @@max_prepared_stmt_count=1; ERROR HY000: Variable 'max_prepared_stmt_count' is a GLOBAL variable and should be set with SET GLOBAL set max_prepared_stmt_count=1; ERROR HY000: Variable 'max_prepared_stmt_count' is a GLOBAL variable and should be set with SET GLOBAL set local max_prepared_stmt_count=1; ERROR HY000: Variable 'max_prepared_stmt_count' is a GLOBAL variable and should be set with SET GLOBAL set local prepared_stmt_count=0; ERROR HY000: Variable 'prepared_stmt_count' is a read only variable set @@prepared_stmt_count=0; ERROR HY000: Variable 'prepared_stmt_count' is a read only variable set global prepared_stmt_count=1; ERROR HY000: Variable 'prepared_stmt_count' is a read only variable set global max_prepared_stmt_count=1; select @@max_prepared_stmt_count; @@max_prepared_stmt_count 1 set global max_prepared_stmt_count=0; select @@max_prepared_stmt_count, @@prepared_stmt_count; @@max_prepared_stmt_count @@prepared_stmt_count 0 0 prepare stmt from "select 1"; ERROR 42000: Can't create more than max_prepared_stmt_count statements (current value: 0) select @@prepared_stmt_count; @@prepared_stmt_count 0 set global max_prepared_stmt_count=1; prepare stmt from "select 1"; select @@prepared_stmt_count; @@prepared_stmt_count 1 prepare stmt1 from "select 1"; ERROR 42000: Can't create more than max_prepared_stmt_count statements (current value: 1) select @@prepared_stmt_count; @@prepared_stmt_count 1 deallocate prepare stmt; select @@prepared_stmt_count; @@prepared_stmt_count 0 prepare stmt from "select 1"; select @@prepared_stmt_count; @@prepared_stmt_count 1 prepare stmt from "select 2"; select @@prepared_stmt_count; @@prepared_stmt_count 1 select @@prepared_stmt_count, @@max_prepared_stmt_count; @@prepared_stmt_count @@max_prepared_stmt_count 1 1 set global max_prepared_stmt_count=0; prepare stmt from "select 1"; ERROR 42000: Can't create more than max_prepared_stmt_count statements (current value: 0) execute stmt; ERROR HY000: Unknown prepared statement handler (stmt) given to EXECUTE select @@prepared_stmt_count; @@prepared_stmt_count 0 prepare stmt from "select 1"; ERROR 42000: Can't create more than max_prepared_stmt_count statements (current value: 0) select @@prepared_stmt_count; @@prepared_stmt_count 0 set global max_prepared_stmt_count=3; select @@max_prepared_stmt_count, @@prepared_stmt_count; @@max_prepared_stmt_count @@prepared_stmt_count 3 0 prepare stmt from "select 1"; prepare stmt from "select 2"; prepare stmt1 from "select 3"; prepare stmt2 from "select 4"; ERROR 42000: Can't create more than max_prepared_stmt_count statements (current value: 3) prepare stmt2 from "select 4"; ERROR 42000: Can't create more than max_prepared_stmt_count statements (current value: 3) select @@max_prepared_stmt_count, @@prepared_stmt_count; @@max_prepared_stmt_count @@prepared_stmt_count 3 3 deallocate prepare stmt; select @@max_prepared_stmt_count, @@prepared_stmt_count; @@max_prepared_stmt_count @@prepared_stmt_count 3 0 set global max_prepared_stmt_count= @old_max_prepared_stmt_count; create table t1 (id int); prepare ins_call from "insert into t1 (id) values (1)"; execute ins_call; select row_count(); row_count() 1 drop table t1; create table t1 (a int, b int); insert into t1 (a,b) values (2,8),(1,9),(3,7); prepare stmt from "select * from t1 order by ?"; set @a=NULL; execute stmt using @a; a b 2 8 1 9 3 7 set @a=1; execute stmt using @a; a b 1 9 2 8 3 7 set @a=2; execute stmt using @a; a b 3 7 2 8 1 9 deallocate prepare stmt; select * from t1 order by 1; a b 1 9 2 8 3 7 prepare stmt from "select * from t1 order by ?+1"; set @a=0; execute stmt using @a; a b 2 8 1 9 3 7 set @a=1; execute stmt using @a; a b 2 8 1 9 3 7 deallocate prepare stmt; select * from t1 order by 1+1; a b 2 8 1 9 3 7 drop table t1;