drop database if exists subquery_db;
create database subquery_db;
use subquery_db;

create table t1(c1 int primary key, c2 int);
create table t2(c1 int primary key, c2 int, c3 varchar(32));
create table t3(c1 int, c2 int);

select * from t1 where c1>ANY(select c1 from t2);
select * from t1 where c1<ALL(select c1 from t2);
select * from t1 where c1=(select c1 from t2);
select * from t1 where c1=ANY(select c1 from t2 where t1.c2>t2.c2);
select * from t1 where exists(select c1 from t2 where t1.c2>t2.c2);
select * from t1 where 1<ANY(select c1 from t2);
select c2 from t1 where exists(select c2 from t2 where t1.c1>t2.c1);
select * from t1 where c1>(select c1 from t2);
select * from t1 where exists(select * from t2 where t1.c1=t2.c2);
select * from t1 where c1 in (select c1 from t1);
#from-subquery
select * from (select * from t1 limit 1) t;
select c1 from t1 where c1 not in (select c1 from t2 where c2 not in (select c2 from t2));
select (select c1 from t1) from t1;
select c1 from t1 where c1 in (select c1 from t2 where c2 >= some(select max(c1) from (select c1 from t3 where t1.c2=t3.c1 order by c1 limit 1) as tt));

--error 5042
select (select c1, c2 from t1) from t1;
select * from t1 group by (select c1 from t1);
--error 5042
select * from t1 group by (select c1, c2 from t1);
select * from t1 where (select c1 from t2) in (1, 2);


select * from t1 where c1=ANY(select c1 from t2 where t1.c2>t2.c2);
select * from t1, (select * from t2) as v where exists(select c2 from t2 where t2.c1 = t1.c1);
(select substr('a',1,1) ) union (select 1);

--error 5008
select * from (select c1, c2, c2 from t1) tt;

select c1 from t1 where c1 in (select c1 from t2 where c2 >= some(select c1 from t3 where t1.c2=t3.c1));

drop database subquery_db;