mariadb/mysql-test/t/union.test

#
# Test of unions
#

drop table if exists t1,t2,t3;
CREATE TABLE t1 (a int not null, b char (10) not null);
insert into t1 values(1,'a'),(2,'b'),(3,'c'),(3,'c');
CREATE TABLE t2 (a int not null, b char (10) not null);
insert into t2 values (3,'c'),(4,'d'),(5,'f'),(6,'e');

select a,b from t1 union 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 union all select a,b from t2 union select 7,'g';
select 0,'#' union select a,b from t1 union all select a,b from t2 union select 7,'gg';
select a,b from t1 union select a,b from t1;
select 't1',b,count(*) from t1 group by b UNION select 't2',b,count(*) from t2 group by b;

# Test some error conditions with UNION
explain select a,b from t1 union all select a,b from t2;

--error 1216
select a,b from t1 into outfile 'skr' union select a,b from t2;

--error 1216
select a,b from t1 order by a union select a,b from t2;

--error 1216
insert into t3 select a from t1 order by a union select a from t2;

--error 1217
create table t3 select a,b from t1 union select a from t2;

--error 1217
select a,b from t1 union select a from t2;

--error 1217
select * from t1 union select a from t2;

--error 1217
select a from t1 union select * from t2;

# Test CREATE, INSERT and REPLACE
create table t3 select a,b from t1 union all select a,b from t2;
insert into t3 select a,b from t1 union all select a,b from t2;
replace into t3 select a,b as c from t1 union all select a,b from t2;

drop table t1,t2,t3;

#
# Test bug reported by joc@presence-pc.com
#

CREATE TABLE t1 (
  `pseudo` char(35) NOT NULL default '',
  `pseudo1` char(35) NOT NULL default '',
  `same` tinyint(1) unsigned NOT NULL default '1',
  PRIMARY KEY  (`pseudo1`),
  KEY `pseudo` (`pseudo`)
) TYPE=MyISAM;
INSERT INTO t1 (pseudo,pseudo1,same) VALUES ('joce', 'testtt', 1),('joce', 'tsestset', 1),('dekad', 'joce', 1);
SELECT pseudo FROM t1 WHERE pseudo1='joce' UNION SELECT pseudo FROM t1 WHERE pseudo='joce';
SELECT * FROM t1 WHERE pseudo1='joce' UNION SELECT * FROM t1 WHERE pseudo='joce';
drop table t1;