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drop table if exists t1;
drop table if exists t2;
create table t1 (p int not null primary key, u int not null, o int not null,
unique (u), key(o)) engine=ndb;
create table t2 (p int not null primary key, u int not null, o int not null,
unique (u), key(o)) engine=ndb;
insert into t1 values (1,1,1),(2,2,2),(3,3,3);
insert into t2 values (1,1,1),(2,2,2),(3,3,3), (4,4,4), (5,5,5);
explain select * from t2 where p NOT IN (select p from t1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 5 Using where
2 DEPENDENT SUBQUERY t1 unique_subquery PRIMARY PRIMARY 4 func 1
select * from t2 where p NOT IN (select p from t1) order by p;
p u o
4 4 4
5 5 5
explain select * from t2 where p NOT IN (select u from t1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 5 Using where
2 DEPENDENT SUBQUERY t1 unique_subquery u u 4 func 1
select * from t2 where p NOT IN (select u from t1) order by p;
p u o
4 4 4
5 5 5
explain select * from t2 where p NOT IN (select o from t1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 5 Using where
2 DEPENDENT SUBQUERY t1 index_subquery o o 4 func 1
select * from t2 where p NOT IN (select o from t1) order by p;
p u o
4 4 4
5 5 5
explain select * from t2 where p NOT IN (select p+0 from t1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 5 Using where
2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 3 Using where
select * from t2 where p NOT IN (select p+0 from t1) order by p;
p u o
4 4 4
5 5 5
drop table t1;
drop table t2;
create table t1 (p int not null primary key, u int not null) engine=ndb;
insert into t1 values (1,1),(2,2),(3,3);
create table t2 as
select t1.*
from t1 as t1, t1 as t2, t1 as t3, t1 as t4, t1 as t5, t1 as t6, t1 as t7, t1 as t8
where t1.u = t2.u
and t2.u = t3.u
and t3.u = t4.u
and t4.u = t5.u
and t5.u = t6.u
and t6.u = t7.u
and t7.u = t8.u;
select * from t2 order by 1;
p u
1 1
2 2
3 3
drop table t1;
drop table t2;
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