drop database if exists db_set;
create database db_set;
use db_set;


##
## Test of unions
##
#
drop table if exists t1,t2;
CREATE TABLE t1 (pk int primary key, a int not null, b char (10) not null);
CREATE TABLE t2 (pk int primary key, a int not null, b char (10) not null);

select a,b from t1 union select a,b from t2;
select a,b from t1 union distinct select a,b from t2;
select a,b from t1 union all select a,b from t2;
select a,b from t1 union all select a,b from t2 order by b;
select a,b from t1 limit 1 union select a,b from t2;
select a,b from t1 union select a,b from t2 limit 1;
select a,b from t1 limit 1 union select a,b from t2 limit 1;
select a,b from t1 limit 1 union select a,b from t2 order by a limit 3;
(select a,b from t1 limit 1) union (select a,b from t2 order by a limit 3);
#--error 5001
#(select a,b from t1) order by a union (select a,b from t2);
(select a,b from t1 limit 1) union (select a,b from t2 order by a limit 3) limit 1;
select a,b from t1 union (select a,b from t2 order by a limit 3);
(select a from t1) union select a from t2;
select 'test' union select 'test2';
select 'test' limit 1 union select 'test2';
--error 4007
select a from t1 union select a from t1 order by a+1;
select/*+query_timeout(1000)*/ 'test' union select/*+query_timeout(1000)*/ 'test2';

drop table t1,t2;


drop database db_set;