drop table if exists t1,t2,t3;
drop database if exists mysqltest;
revoke all privileges on mysqltest.t1 from mysqltest_1@localhost;
revoke all privileges on mysqltest.* from mysqltest_1@localhost;
delete from mysql.user where user=_binary'mysqltest_1';
create table t1(id1 int not null auto_increment primary key, t char(12));
create table t2(id2 int not null, t char(12));
create table t3(id3 int not null, t char(12), index(id3));
select count(*) from t1 where id1 > 95;
count(*)
5
select count(*) from t2 where id2 > 95;
count(*)
25
select count(*) from t3 where id3 > 95;
count(*)
250
update t1,t2,t3 set t1.t="aaa", t2.t="bbb", t3.t="cc" where  t1.id1 = t2.id2 and t2.id2 = t3.id3  and t1.id1 > 90;
select count(*) from t1 where t = "aaa";
count(*)
10
select count(*) from t1 where id1 > 90;
count(*)
10
select count(*) from t2 where t = "bbb";
count(*)
50
select count(*) from t2 where id2 > 90;
count(*)
50
select count(*) from t3 where t = "cc";
count(*)
500
select count(*) from t3 where id3 > 90;
count(*)
500
delete t1.*, t2.*, t3.*  from t1,t2,t3 where t1.id1 = t2.id2 and t2.id2 = t3.id3  and t1.id1 > 95;
check table t1, t2, t3;
Table	Op	Msg_type	Msg_text
test.t1	check	status	OK
test.t2	check	status	OK
test.t3	check	status	OK
select count(*) from t1 where id1 > 95;
count(*)
0
select count(*) from t2 where id2 > 95;
count(*)
0
select count(*) from t3 where id3 > 95;
count(*)
0
delete t1, t2, t3  from t1,t2,t3 where t1.id1 = t2.id2 and t2.id2 = t3.id3  and t1.id1 > 5;
select count(*) from t1 where id1 > 5;
count(*)
0
select count(*) from t2 where id2 > 5;
count(*)
0
select count(*) from t3 where id3 > 5;
count(*)
0
delete from t1, t2, t3  using t1,t2,t3 where t1.id1 = t2.id2 and t2.id2 = t3.id3  and t1.id1 > 0;
select count(*) from t1 where id1;
count(*)
0
select count(*) from t2 where id2;
count(*)
0
select count(*) from t3 where id3;
count(*)
0
drop table t1,t2,t3;
create table t1(id1 int not null  primary key, t varchar(100)) pack_keys = 1;
create table t2(id2 int not null, t varchar(100), index(id2)) pack_keys = 1;
delete t1  from t1,t2 where t1.id1 = t2.id2 and t1.id1 > 500;
drop table t1,t2;
CREATE TABLE t1 (
id int(11) NOT NULL default '0',
name varchar(10) default NULL,
PRIMARY KEY  (id)
) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1,'aaa'),(2,'aaa'),(3,'aaa');
CREATE TABLE t2 (
id int(11) NOT NULL default '0',
name varchar(10) default NULL,
PRIMARY KEY  (id)
) ENGINE=MyISAM;
INSERT INTO t2 VALUES (2,'bbb'),(3,'bbb'),(4,'bbb');
CREATE TABLE t3 (
id int(11) NOT NULL default '0',
mydate datetime default NULL,
PRIMARY KEY  (id)
) ENGINE=MyISAM;
INSERT INTO t3 VALUES (1,'2002-02-04 00:00:00'),(3,'2002-05-12 00:00:00'),(5,'2002-05-12 00:00:00'),(6,'2002-06-22
00:00:00'),(7,'2002-07-22 00:00:00');
delete t1,t2,t3 from t1,t2,t3 where to_days(now())-to_days(t3.mydate)>=30 and t3.id=t1.id and t3.id=t2.id;
select * from t3;
id	mydate
1	2002-02-04 00:00:00
5	2002-05-12 00:00:00
6	2002-06-22 00:00:00
7	2002-07-22 00:00:00
DROP TABLE t1,t2,t3;
CREATE TABLE IF NOT EXISTS `t1` (
`id` int(11) NOT NULL auto_increment,
`tst` text,
`tst1` text,
PRIMARY KEY  (`id`)
) ENGINE=MyISAM;
CREATE TABLE IF NOT EXISTS `t2` (
`ID` int(11) NOT NULL auto_increment,
`ParId` int(11) default NULL,
`tst` text,
`tst1` text,
PRIMARY KEY  (`ID`),
KEY `IX_ParId_t2` (`ParId`),
FOREIGN KEY (`ParId`) REFERENCES `t1` (`id`)
) ENGINE=MyISAM;
INSERT INTO t1(tst,tst1) VALUES("MySQL","MySQL AB"), ("MSSQL","Microsoft"), ("ORACLE","ORACLE");
INSERT INTO t2(ParId) VALUES(1), (2), (3);
select * from t2;
ID	ParId	tst	tst1
1	1	NULL	NULL
2	2	NULL	NULL
3	3	NULL	NULL
UPDATE t2, t1 SET t2.tst = t1.tst, t2.tst1 = t1.tst1 WHERE t2.ParId = t1.Id;
select * from t2;
ID	ParId	tst	tst1
1	1	MySQL	MySQL AB
2	2	MSSQL	Microsoft
3	3	ORACLE	ORACLE
drop table t1, t2 ;
create table t1 (n numeric(10));
create table t2 (n numeric(10));
insert into t2 values (1),(2),(4),(8),(16),(32);
select * from t2 left outer join t1  using (n);
n	n
1	NULL
2	NULL
4	NULL
8	NULL
16	NULL
32	NULL
delete  t1,t2 from t2 left outer join t1  using (n);
select * from t2 left outer join t1  using (n);
n	n
drop table t1,t2 ;
create table t1 (n int(10) not null primary key, d int(10));
create table t2 (n int(10) not null primary key, d int(10));
insert into t1 values(1,1);
insert into t2 values(1,10),(2,20);
LOCK TABLES t1 write, t2 read;
DELETE t1.*, t2.* FROM t1,t2 where t1.n=t2.n;
ERROR HY000: Table 't2' was locked with a READ lock and can't be updated
UPDATE t1,t2 SET t1.d=t2.d,t2.d=30 WHERE t1.n=t2.n;
ERROR HY000: Table 't2' was locked with a READ lock and can't be updated
UPDATE t1,t2 SET t1.d=t2.d WHERE t1.n=t2.n;
unlock tables;
LOCK TABLES t1 write, t2 write;
UPDATE t1,t2 SET t1.d=t2.d WHERE t1.n=t2.n;
select * from t1;
n	d
1	10
DELETE t1.*, t2.* FROM t1,t2 where t1.n=t2.n;
select * from t1;
n	d
select * from t2;
n	d
2	20
unlock tables;
drop table t1,t2;
set sql_safe_updates=1;
create table t1 (n int(10), d int(10));
create table t2 (n int(10), d int(10));
insert into t1 values(1,1);
insert into t2 values(1,10),(2,20);
UPDATE t1,t2 SET t1.d=t2.d WHERE t1.n=t2.n;
ERROR HY000: You are using safe update mode and you tried to update a table without a WHERE that uses a KEY column
set sql_safe_updates=0;
drop table t1,t2;
set timestamp=1038401397;
create table t1 (n int(10) not null primary key, d int(10), t timestamp);
create table t2 (n int(10) not null primary key, d int(10), t timestamp);
insert into t1 values(1,1,NULL);
insert into t2 values(1,10,NULL),(2,20,NULL);
set timestamp=1038000000;
UPDATE t1,t2 SET t1.d=t2.d WHERE t1.n=t2.n;
select n,d,unix_timestamp(t) from t1;
n	d	unix_timestamp(t)
1	10	1038000000
select n,d,unix_timestamp(t) from t2;
n	d	unix_timestamp(t)
1	10	1038401397
2	20	1038401397
UPDATE t1,t2 SET 1=2 WHERE t1.n=t2.n;
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 '1=2 WHERE t1.n=t2.n' at line 1
drop table t1,t2;
set timestamp=0;
set sql_safe_updates=0;
create table t1 (n int(10) not null primary key, d int(10));
create table t2 (n int(10) not null primary key, d int(10));
insert into t1 values(1,1), (3,3);
insert into t2 values(1,10),(2,20);
UPDATE t2 left outer join t1 on t1.n=t2.n  SET t1.d=t2.d;
select * from t1;
n	d
1	10
3	3
select * from t2;
n	d
1	10
2	20
drop table t1,t2;
create table t1 (n int(10), d int(10));
create table t2 (n int(10), d int(10));
insert into t1 values(1,1),(1,2);
insert into t2 values(1,10),(2,20);
UPDATE t1,t2 SET t1.d=t2.d,t2.d=30 WHERE t1.n=t2.n;
select * from t1;
n	d
1	10
1	10
select * from t2;
n	d
1	30
2	20
drop table t1,t2;
create table t1 (n int(10), d int(10));
create table t2 (n int(10), d int(10));
insert into t1 values(1,1),(3,2);
insert into t2 values(1,10),(1,20);
UPDATE t1,t2 SET t1.d=t2.d,t2.d=30 WHERE t1.n=t2.n;
select * from t1;
n	d
1	10
3	2
select * from t2;
n	d
1	30
1	30
UPDATE t1 a ,t2 b SET a.d=b.d,b.d=30 WHERE a.n=b.n;
select * from t1;
n	d
1	30
3	2
select * from t2;
n	d
1	30
1	30
DELETE a, b  FROM t1 a,t2 b where a.n=b.n;
select * from t1;
n	d
3	2
select * from t2;
n	d
drop table t1,t2;
CREATE TABLE t1 ( broj int(4) unsigned NOT NULL default '0',  naziv char(25) NOT NULL default 'NEPOZNAT',  PRIMARY KEY  (broj)) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1,'jedan'),(2,'dva'),(3,'tri'),(4,'xxxxxxxxxx'),(5,'a'),(10,''),(11,''),(12,''),(13,'');
CREATE TABLE t2 ( broj int(4) unsigned NOT NULL default '0',  naziv char(25) NOT NULL default 'NEPOZNAT',  PRIMARY KEY  (broj)) ENGINE=MyISAM;
INSERT INTO t2 VALUES (1,'jedan'),(2,'dva'),(3,'tri'),(4,'xxxxxxxxxx'),(5,'a');
CREATE TABLE t3 ( broj int(4) unsigned NOT NULL default '0',  naziv char(25) NOT NULL default 'NEPOZNAT',  PRIMARY KEY  (broj)) ENGINE=MyISAM;
INSERT INTO t3 VALUES (1,'jedan'),(2,'dva');
update t1,t2 set t1.naziv="aaaa" where t1.broj=t2.broj;
update t1,t2,t3 set t1.naziv="bbbb", t2.naziv="aaaa" where t1.broj=t2.broj and t2.broj=t3.broj;
drop table t1,t2,t3;
CREATE TABLE t1 (a int not null primary key, b int not null, key (b));
CREATE TABLE t2 (a int not null primary key, b int not null, key (b));
INSERT INTO t1 values (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8),(9,9);
INSERT INTO t2 values (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8),(9,9);
update t1,t2 set t1.a=t1.a+100;
select * from t1;
a	b
101	1
102	2
103	3
104	4
105	5
106	6
107	7
108	8
109	9
update t1,t2 set t1.a=t1.a+100 where t1.a=101;
select * from t1;
a	b
201	1
102	2
103	3
104	4
105	5
106	6
107	7
108	8
109	9
update t1,t2 set t1.b=t1.b+10 where t1.b=2;
select * from t1;
a	b
201	1
102	12
103	3
104	4
105	5
106	6
107	7
108	8
109	9
update t1,t2 set t1.b=t1.b+2,t2.b=t1.b+10 where t1.b between 3 and 5 and t2.a=t1.a-100;
select * from t1;
a	b
201	1
102	12
103	5
104	6
105	7
106	6
107	7
108	8
109	9
select * from t2;
a	b
1	1
2	2
3	13
4	14
5	15
6	6
7	7
8	8
9	9
update t1,t2 set t1.b=t2.b, t1.a=t2.a where t1.a=t2.a and not exists (select * from t2 where t2.a > 10);
drop table t1,t2;
CREATE TABLE t3 (  KEY1 varchar(50) NOT NULL default '',  PARAM_CORR_DISTANCE_RUSH double default NULL,  PARAM_CORR_DISTANCE_GEM double default NULL,  PARAM_AVG_TARE double default NULL,  PARAM_AVG_NB_DAYS double default NULL,  PARAM_DEFAULT_PROP_GEM_SRVC varchar(50) default NULL,  PARAM_DEFAULT_PROP_GEM_NO_ETIK varchar(50) default NULL,  PARAM_SCENARIO_COSTS varchar(50) default NULL,  PARAM_DEFAULT_WAGON_COST double default NULL,  tmp int(11) default NULL,  PRIMARY KEY  (KEY1)) ENGINE=MyISAM;
INSERT INTO t3 VALUES ('A',1,1,22,3.2,'R','R','BASE2',0.24,NULL);
create table t1 (A varchar(1));
insert into t1 values  ("A") ,("B"),("C"),("D");
create table t2(Z varchar(15));
insert into t2(Z)  select concat(a.a,b.a,c.a,d.a) from t1 as a, t1 as b, t1 as c, t1 as d;
update t2,t3 set Z =param_scenario_costs;
drop table t1,t2,t3;
create table t1 (a int, b int);
create table t2 (a int, b int);
insert into t1 values (1,1),(2,1),(3,1);
insert into t2 values (1,1), (3,1);
update t1 left join t2  on t1.a=t2.a set t1.b=2, t2.b=2 where t1.b=1 and t2.b=1 or t2.a is NULL;
select t1.a, t1.b,t2.a, t2.b from t1 left join t2  on t1.a=t2.a where t1.b=1 and t2.b=1 or t2.a is NULL;
a	b	a	b
2	2	NULL	NULL
drop table t1,t2;
create table t1 (a int not null auto_increment primary key, b int not null);
insert into t1 (b) values (1),(2),(3),(4);
update t1, t1 as t2 set t1.b=t2.b+1 where t1.a=t2.a;
select * from t1;
a	b
1	2
2	3
3	4
4	5
drop table t1;
create table t1(id1 smallint(5), field char(5));
create table t2(id2 smallint(5), field char(5));
insert into t1 values (1, 'a'), (2, 'aa');
insert into t2 values (1, 'b'), (2, 'bb');
select * from t1;
id1	field
1	a
2	aa
select * from t2;
id2	field
1	b
2	bb
update t2 inner join t1 on t1.id1=t2.id2
set t2.field=t1.field
where 0=1;
update t2, t1 set t2.field=t1.field
where t1.id1=t2.id2 and 0=1;
delete t1, t2 from t2 inner join t1 on t1.id1=t2.id2
where 0=1;
delete t1, t2 from t2,t1 
where t1.id1=t2.id2 and 0=1;
drop table t1,t2;
create table t1 ( a int not null, b int not null) ;
alter table t1 add index i1(a);
delete from t1 where a > 2000000;
create table t2 like t1;
insert into t2 select * from t1;
select 't2 rows before small delete', count(*) from t1;
t2 rows before small delete	count(*)
t2 rows before small delete	2000000
delete t1,t2 from t1,t2 where t1.b=t2.a and t1.a < 2;
select 't2 rows after small delete', count(*) from t2;
t2 rows after small delete	count(*)
t2 rows after small delete	1999999
select 't1 rows after small delete', count(*) from t1;
t1 rows after small delete	count(*)
t1 rows after small delete	1999999
delete t1,t2 from t1,t2 where t1.b=t2.a and t1.a < 100*1000;
select 't2 rows after big delete', count(*) from t2;
t2 rows after big delete	count(*)
t2 rows after big delete	1900001
select 't1 rows after big delete', count(*) from t1;
t1 rows after big delete	count(*)
t1 rows after big delete	1900001
drop table t1,t2;
CREATE TABLE t1 ( a int );
CREATE TABLE t2 ( a int );
DELETE t1 FROM t1, t2 AS t3;
DELETE t4 FROM t1, t1 AS t4;
DELETE t3 FROM t1 AS t3, t1 AS t4;
DELETE t1 FROM t1 AS t3, t2 AS t4;
ERROR 42S02: Unknown table 't1' in MULTI DELETE
INSERT INTO t1 values (1),(2);
INSERT INTO t2 values (1),(2);
DELETE t1 FROM t1 AS t2, t2 AS t1 where t1.a=t2.a and t1.a=1;
SELECT * from t1;
a
1
2
SELECT * from t2;
a
2
DELETE t2 FROM t1 AS t2, t2 AS t1 where t1.a=t2.a and t1.a=2;
SELECT * from t1;
a
1
SELECT * from t2;
a
2
DROP TABLE t1,t2;
create table `t1` (`p_id` int(10) unsigned NOT NULL auto_increment, `p_code` varchar(20) NOT NULL default '', `p_active` tinyint(1) unsigned NOT NULL default '1', PRIMARY KEY (`p_id`) );
create table `t2` (`c2_id` int(10) unsigned NULL auto_increment, `c2_p_id` int(10) unsigned NOT NULL default '0', `c2_note` text NOT NULL, `c2_active` tinyint(1) unsigned NOT NULL default '1', PRIMARY KEY (`c2_id`), KEY `c2_p_id` (`c2_p_id`) );
insert into t1 values (0,'A01-Comp',1);
insert into t1 values (0,'B01-Comp',1);
insert into t2 values (0,1,'A Note',1);
update t1 left join t2 on p_id = c2_p_id set c2_note = 'asdf-1' where p_id = 2;
select * from t1;
p_id	p_code	p_active
1	A01-Comp	1
2	B01-Comp	1
select * from t2;
c2_id	c2_p_id	c2_note	c2_active
1	1	A Note	1
drop table t1, t2;
create database mysqltest;
create table mysqltest.t1 (a int, b int, primary key (a));
create table mysqltest.t2 (a int, b int, primary key (a));
create table mysqltest.t3 (a int, b int, primary key (a));
grant select on mysqltest.* to mysqltest_1@localhost;
grant update on mysqltest.t1 to mysqltest_1@localhost;
update t1, t2 set t1.b=1 where t1.a=t2.a;
update t1, t2 set t1.b=(select t3.b from t3 where t1.a=t3.a) where t1.a=t2.a;
revoke all privileges on mysqltest.t1 from mysqltest_1@localhost;
revoke all privileges on mysqltest.* from mysqltest_1@localhost;
delete from mysql.user where user=_binary'mysqltest_1';
drop database mysqltest;
create table t1 (a int, primary key (a));
create table t2 (a int, primary key (a));
create table t3 (a int, primary key (a));
delete t1,t3 from t1,t2 where t1.a=t2.a and t2.a=(select t3.a from t3 where t1.a=t3.a);
ERROR 42S02: Unknown table 't3' in MULTI DELETE
drop table t1, t2, t3;
create table t1 (col1 int);
create table t2 (col1 int);
update t1,t2 set t1.col1 = (select max(col1) from t1) where t1.col1 = t2.col1;
ERROR HY000: You can't specify target table 't1' for update in FROM clause
delete t1 from t1,t2 where t1.col1 < (select max(col1) from t1) and t1.col1 = t2.col1;
ERROR HY000: You can't specify target table 't1' for update in FROM clause
drop table t1,t2;
create table t1 (
aclid bigint not null primary key, 
status tinyint(1) not null 
) engine = innodb;
create table t2 (
refid bigint not null primary key, 
aclid bigint, index idx_acl(aclid) 
) engine = innodb;
insert into t2 values(1,null);
delete t2, t1 from t2 left join t1 on (t2.aclid=t1.aclid) where t2.refid='1';
drop table t1, t2;
create table t1(a int);
create table t2(a int);
delete from t1,t2 using t1,t2 where t1.a=(select a from t1);
ERROR HY000: You can't specify target table 't1' for update in FROM clause
drop table t1, t2;
