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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), index(id2));
create table t3(id3 int not null, t char(12), index(id3));
let $1 = 3;
while ($1)
{
let $2 = 3;
eval insert into t1(t) values ('$1');
while ($2)
{
eval insert into t2(id2,t) values ($1,'$2');
eval insert into t3(id3,t) values ($1,'$2');
dec $2;
}
dec $1;
}
delete t1.*,t2.* from t1,t2 where t1.id1 = t2.id2 and t1.id1 = 3;
delete t3 from t3 left join t1 on (id1=id3) where t1.id1 is null;
delete t2 from t1,t2,t3 where id1=id2 and id2=id3 and id1=2;
select * from t1;
select * from t2;
select * from t3;
delete t1,t2 from t1,t2 where 1;
drop table t1,t2,t3;
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