mariadb/mysql-test/t/multi_update.test

#
# Only run the test if we are using --big-test, because this test takes a
# long time
#
#-- require r/big_test.require
#eval select $BIG_TEST as using_big_test;

drop table if exists t1,t2,t3;
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;
DROP TABLE IF EXISTS a,b,c;
CREATE TABLE a (
  id int(11) NOT NULL default '0',
  name varchar(10) default NULL,
  PRIMARY KEY  (id)
) TYPE=MyISAM;
INSERT INTO a VALUES (1,'aaa'),(2,'aaa'),(3,'aaa');
CREATE TABLE b (
  id int(11) NOT NULL default '0',
  name varchar(10) default NULL,
  PRIMARY KEY  (id)
) TYPE=MyISAM;
INSERT INTO b VALUES (2,'bbb'),(3,'bbb'),(4,'bbb');
CREATE TABLE c (
  id int(11) NOT NULL default '0',
  mydate datetime default NULL,
  PRIMARY KEY  (id)
) TYPE=MyISAM;
INSERT INTO c 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 a,b,c from a,b,c
where to_days(now())-to_days(c.mydate)>=30
and c.id=a.id and c.id=b.id;
select * from c;
DROP TABLE IF EXISTS a,b,c;
drop table if exists parent, child;
CREATE TABLE IF NOT EXISTS `parent` (
  `id` int(11) NOT NULL auto_increment,
  `tst` text,
  `tst1` text,
  PRIMARY KEY  (`id`)
) TYPE=MyISAM;

CREATE TABLE IF NOT EXISTS `child` (
  `ID` int(11) NOT NULL auto_increment,
  `ParId` int(11) default NULL,
  `tst` text,
  `tst1` text,
  PRIMARY KEY  (`ID`),
  KEY `IX_ParId_child` (`ParId`),
  FOREIGN KEY (`ParId`) REFERENCES `test.parent` (`id`)
) TYPE=MyISAM;

INSERT INTO parent(tst,tst1)
VALUES("MySQL","MySQL AB"), ("MSSQL","Microsoft"), ("ORACLE","ORACLE");

INSERT INTO child(ParId)
VALUES(1), (2), (3);

select * from child;

UPDATE child, parent
SET child.tst = parent.tst,
child.tst1 = parent.tst1
WHERE child.ParId = parent.Id;

select * from child;


drop table parent, child;