multi_update.result
上传用户:romrleung
上传日期:2022-05-23
资源大小:18897k
文件大小:14k
源码类别:
MySQL数据库
开发平台:
Visual C++
- 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;