multi_update.test

开启mysql的远程连接的方法 mysql-noinstall-5.1.6-alpha-win32.zip

#
# Test of update statement that uses many tables.
#

# Requires grants, so won't work with embedded server test
-- source include/not_embedded.inc

--disable_warnings
drop table if exists t1,t2,t3;
drop database if exists mysqltest;
drop view if exists v1;
--error 0,1141,1147
revoke all privileges on mysqltest.t1 from mysqltest_1@localhost;
--error 0,1141,1147
revoke all privileges on mysqltest.* from mysqltest_1@localhost;
delete from mysql.user where user=_binary'mysqltest_1';
--enable_warnings

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));
disable_query_log;
let $1 = 100;
while ($1)
 {
  let $2 = 5;
  eval insert into t1(t) values ('$1'); 
  while ($2)
   {
     eval insert into t2(id2,t) values ($1,'$2'); 
     let $3 = 10;
     while ($3)
     {
       eval insert into t3(id3,t) values ($1,'$2'); 
       dec $3;
     }
     dec $2; 
   }
  dec $1;
 }
enable_query_log;

select count(*) from t1 where id1 > 95;
select count(*) from t2 where id2 > 95;
select count(*) from t3 where id3 > 95;

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";
select count(*) from t1 where id1 > 90;
select count(*) from t2 where t = "bbb";
select count(*) from t2 where id2 > 90;
select count(*) from t3 where t = "cc";
select count(*) from t3 where id3 > 90;
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;

select count(*) from t1 where id1 > 95;
select count(*) from t2 where id2 > 95;
select count(*) from t3 where id3 > 95;

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;
select count(*) from t2 where id2 > 5;
select count(*) from t3 where id3 > 5;

delete from t1, t2, t3  using t1,t2,t3 where t1.id1 = t2.id2 and t2.id2 = t3.id3  and t1.id1 > 0;

# These queries will force a scan of the table
select count(*) from t1 where id1;
select count(*) from t2 where id2;
select count(*) from t3 where id3;
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;
disable_query_log;
let $1 = 1000;
while ($1)
 {
  let $2 = 5;
  eval insert into t1 values ($1,'aaaaaaaaaaaaaaaaaaaa'); 
  while ($2)
   {
     eval insert into t2(id2,t) values ($1,'bbbbbbbbbbbbbbbbb'); 
     dec $2; 
   }
  dec $1;
 }
enable_query_log;
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;
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;

UPDATE t2, t1 SET t2.tst = t1.tst, t2.tst1 = t1.tst1 WHERE t2.ParId = t1.Id;

select * from t2;
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);
delete  t1,t2 from t2 left outer join t1  using (n);
select * from t2 left outer join t1  using (n);
drop table t1,t2 ;

#
# Test with locking
#

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;
--error 1099
DELETE t1.*, t2.* FROM t1,t2 where t1.n=t2.n;
--error 1099
UPDATE t1,t2 SET t1.d=t2.d,t2.d=30 WHERE t1.n=t2.n;
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;
DELETE t1.*, t2.* FROM t1,t2 where t1.n=t2.n;
select * from t1;
select * from t2;
unlock tables;
drop table t1,t2;

#
# Test safe updates and timestamps
#
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);
--error 1175
UPDATE t1,t2 SET t1.d=t2.d WHERE t1.n=t2.n;
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;
select n,d,unix_timestamp(t) from t2;
--error 1064
UPDATE t1,t2 SET 1=2 WHERE t1.n=t2.n;
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;
select * from t2;
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;
select * from t2;
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;
select * from t2;
UPDATE t1 a ,t2 b SET a.d=b.d,b.d=30 WHERE a.n=b.n;
select * from t1;
select * from t2;
DELETE a, b  FROM t1 a,t2 b where a.n=b.n;
select * from t1;
select * from t2;
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;

#
# Test multi update with different join methods
#

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);

# Full join, without key
update t1,t2 set t1.a=t1.a+100;
select * from t1;

# unique key
update t1,t2 set t1.a=t1.a+100 where t1.a=101;
select * from t1;

# ref key
update t1,t2 set t1.b=t1.b+10 where t1.b=2;
select * from t1;

# Range key (in t1)
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;
select * from t2;