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Current Path : /home/usr.opt/mysql57/mysql-test/r/
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64
Current File : //home/usr.opt/mysql57/mysql-test/r/union.result
drop table if exists t1,t2,t3,t4,t5,t6;
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 distinct select a,b from t2;
a	b
1	a
2	b
3	c
4	d
5	f
6	e
select a,b from t1 union all select a,b from t2;
a	b
1	a
2	b
3	c
3	c
3	c
4	d
5	f
6	e
select a,b from t1 union all select a,b from t2 order by b;
a	b
1	a
2	b
3	c
3	c
3	c
4	d
6	e
5	f
select a,b from t1 union all select a,b from t2 union select 7,'g';
a	b
1	a
2	b
3	c
4	d
5	f
6	e
7	g
select 0,'#' union select a,b from t1 union all select a,b from t2 union select 7,'gg';
0	#
0	#
1	a
2	b
3	c
4	d
5	f
6	e
7	gg
select a,b from t1 union select a,b from t1;
a	b
1	a
2	b
3	c
select 't1',b,count(*) from t1 group by b UNION select 't2',b,count(*) from t2 group by b;
t1	b	count(*)
t1	a	1
t1	b	1
t1	c	2
t2	c	1
t2	d	1
t2	e	1
t2	f	1
(select a,b from t1 limit 2)  union all (select a,b from t2 order by a) limit 4;
a	b
1	a
2	b
3	c
4	d
(select a,b from t1 limit 2)  union all (select a,b from t2 order by a limit 1);
a	b
1	a
2	b
3	c
(select a,b from t1 limit 2)  union all (select a,b from t2 order by a limit 1) order by b desc;
a	b
3	c
2	b
1	a
(select a,b from t1 limit 2)  union all (select a,b from t2 order by a limit 1) order by t1.b;
ERROR 42000: Table 't1' from one of the SELECTs cannot be used in global ORDER clause
explain extended (select a,b from t1 limit 2)  union all (select a,b from t2 order by a limit 1) order by b desc;
id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	PRIMARY	t1	NULL	ALL	NULL	NULL	NULL	NULL	4	100.00	NULL
2	UNION	t2	NULL	ALL	NULL	NULL	NULL	NULL	4	100.00	Using filesort
NULL	UNION RESULT	<union1,2>	NULL	ALL	NULL	NULL	NULL	NULL	NULL	NULL	Using temporary; Using filesort
Warnings:
Warning	1681	'EXTENDED' is deprecated and will be removed in a future release.
Note	1003	(/* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` limit 2) union all (/* select#2 */ select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` order by `test`.`t2`.`a` limit 1) order by `b` desc
select count(*) from (
(select                      a,b from t1 limit 2)  union all (select a,b from t2 order by a)) q;
count(*)
6
(select sql_calc_found_rows  a,b from t1 limit 2)  union all (select a,b from t2 order by a) limit 2;
a	b
1	a
2	b
select found_rows();
found_rows()
6
select count(*) from (
select                      a,b from t1  union all select a,b from t2) q;
count(*)
8
select sql_calc_found_rows  a,b from t1  union all select a,b from t2 limit 2;
a	b
1	a
2	b
select found_rows();
found_rows()
8
explain extended 
select * from t1 where a in
(select a from t1 union select a from t1 order by (select a))
union select * from t1 order by (select a);
id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	PRIMARY	t1	NULL	ALL	NULL	NULL	NULL	NULL	4	100.00	Using where
2	DEPENDENT SUBQUERY	t1	NULL	ALL	NULL	NULL	NULL	NULL	4	25.00	Using where
3	DEPENDENT UNION	t1	NULL	ALL	NULL	NULL	NULL	NULL	4	25.00	Using where
NULL	UNION RESULT	<union2,3>	NULL	ALL	NULL	NULL	NULL	NULL	NULL	NULL	Using temporary
5	UNION	t1	NULL	ALL	NULL	NULL	NULL	NULL	4	100.00	NULL
NULL	UNION RESULT	<union1,5>	NULL	ALL	NULL	NULL	NULL	NULL	NULL	NULL	Using temporary; Using filesort
6	DEPENDENT SUBQUERY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
Warnings:
Warning	1681	'EXTENDED' is deprecated and will be removed in a future release.
Note	1276	Field or reference 'a' of SELECT #4 was resolved in SELECT #2
Note	1276	Field or reference 'a' of SELECT #6 was resolved in SELECT #1
Note	1003	/* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where <in_optimizer>(`test`.`t1`.`a`,<exists>(/* select#2 */ select 1 from `test`.`t1` where (<cache>(`test`.`t1`.`a`) = `test`.`t1`.`a`) union /* select#3 */ select 1 from `test`.`t1` where (<cache>(`test`.`t1`.`a`) = `test`.`t1`.`a`))) union /* select#5 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` order by (/* select#6 */ select `a`)
explain select a,b from t1 union all select a,b from t2;
id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	PRIMARY	t1	NULL	ALL	NULL	NULL	NULL	NULL	4	100.00	NULL
2	UNION	t2	NULL	ALL	NULL	NULL	NULL	NULL	4	100.00	NULL
Warnings:
Note	1003	/* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` union all /* select#2 */ select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2`
explain select xx from t1 union select 1;
ERROR 42S22: Unknown column 'xx' in 'field list'
explain select a,b from t1 union select 1;
ERROR 21000: The used SELECT statements have a different number of columns
explain select 1 union select a,b from t1 union select 1;
ERROR 21000: The used SELECT statements have a different number of columns
explain select a,b from t1 union select 1 limit 0;
ERROR 21000: The used SELECT statements have a different number of columns
select a,b from t1 into outfile 'skr' union select a,b from t2;
ERROR HY000: Incorrect usage of UNION and INTO
select a,b from t1 order by a union select a,b from t2;
ERROR HY000: Incorrect usage of UNION and ORDER BY
insert into t3 select a from t1 order by a union select a from t2;
ERROR HY000: Incorrect usage of UNION and ORDER BY
create table t3 select a,b from t1 union select a from t2;
ERROR 21000: The used SELECT statements have a different number of columns
select a,b from t1 union select a from t2;
ERROR 21000: The used SELECT statements have a different number of columns
select * from t1 union select a from t2;
ERROR 21000: The used SELECT statements have a different number of columns
select a from t1 union select * from t2;
ERROR 21000: The used SELECT statements have a different number of columns
select * from t1 union select SQL_BUFFER_RESULT * from t2;
ERROR 42000: Incorrect usage/placement of 'SQL_BUFFER_RESULT'
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;
select * union select 1;
ERROR HY000: No tables used
select 1 as a,(select a union select a);
a	(select a union select a)
1	1
(select 1) union (select 2) order by 0;
ERROR 42S22: Unknown column '0' in 'order clause'
SELECT @a:=1 UNION SELECT @a:=@a+1;
@a:=1
1
2
(SELECT 1) UNION (SELECT 2) ORDER BY (SELECT a);
ERROR 42S22: Unknown column 'a' in 'field list'
(SELECT 1,3) UNION (SELECT 2,1) ORDER BY (SELECT 2);
1	3
1	3
2	1
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`)
) ENGINE=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';
pseudo
dekad
joce
SELECT pseudo1 FROM t1 WHERE pseudo1='joce' UNION SELECT pseudo1 FROM t1 WHERE pseudo='joce';
pseudo1
joce
testtt
tsestset
SELECT * FROM t1 WHERE pseudo1='joce' UNION SELECT * FROM t1 WHERE pseudo='joce' order by pseudo desc,pseudo1 desc;
pseudo	pseudo1	same
joce	tsestset	1
joce	testtt	1
dekad	joce	1
SELECT pseudo1 FROM t1 WHERE pseudo='joce' UNION SELECT pseudo FROM t1 WHERE pseudo1='joce';
pseudo1
testtt
tsestset
dekad
SELECT pseudo1 FROM t1 WHERE pseudo='joce' UNION ALL SELECT pseudo FROM t1 WHERE pseudo1='joce';
pseudo1
testtt
tsestset
dekad
SELECT pseudo1 FROM t1 WHERE pseudo='joce' UNION SELECT 1;
pseudo1
testtt
tsestset
1
drop table t1;
create table t1 (a int);
create table t2 (a int);
insert into t1 values (1),(2),(3),(4),(5);
insert into t2 values (11),(12),(13),(14),(15);
(select * from t1 limit 2) union (select * from t2 limit 3) limit 4;
a
1
2
11
12
(select * from t1 limit 2) union (select * from t2 limit 3);
a
1
2
11
12
13
(select * from t1 limit 2) union (select * from t2 limit 20,3);
a
1
2
set SQL_SELECT_LIMIT=2;
(select * from t1 limit 1) union (select * from t2 limit 3);
a
1
11
set SQL_SELECT_LIMIT=DEFAULT;
drop table t1,t2;
CREATE TABLE t1 (
cid smallint(5) unsigned NOT NULL default '0',
cv varchar(250) NOT NULL default '',
PRIMARY KEY  (cid),
UNIQUE KEY cv (cv)
) ;
INSERT INTO t1 VALUES (8,'dummy');
CREATE TABLE t2 (
cid bigint(20) unsigned NOT NULL auto_increment,
cap varchar(255) NOT NULL default '',
PRIMARY KEY  (cid),
KEY cap (cap)
) ;
CREATE TABLE t3 (
gid bigint(20) unsigned NOT NULL auto_increment,
gn varchar(255) NOT NULL default '',
must tinyint(4) default NULL,
PRIMARY KEY  (gid),
KEY gn (gn)
) ;
INSERT INTO t3 VALUES (1,'V1',NULL);
CREATE TABLE t4 (
uid bigint(20) unsigned NOT NULL default '0',
gid bigint(20) unsigned default NULL,
rid bigint(20) unsigned default NULL,
cid bigint(20) unsigned default NULL,
UNIQUE KEY m (uid,gid,rid,cid),
KEY uid (uid),
KEY rid (rid),
KEY cid (cid),
KEY container (gid,rid,cid)
) ;
INSERT INTO t4 VALUES (1,1,NULL,NULL);
CREATE TABLE t5 (
rid bigint(20) unsigned NOT NULL auto_increment,
rl varchar(255) NOT NULL default '',
PRIMARY KEY  (rid),
KEY rl (rl)
) ;
CREATE TABLE t6 (
uid bigint(20) unsigned NOT NULL auto_increment,
un varchar(250) NOT NULL default '',
uc smallint(5) unsigned NOT NULL default '0',
PRIMARY KEY  (uid),
UNIQUE KEY nc (un,uc),
KEY un (un)
) ;
INSERT INTO t6 VALUES (1,'test',8);
SELECT t4.uid, t5.rl, t3.gn as g1, t4.cid, t4.gid as gg FROM t3, t6, t1, t4 left join t5 on t5.rid = t4.rid left join t2 on t2.cid = t4.cid WHERE t3.gid=t4.gid AND t6.uid = t4.uid AND t6.uc  = t1.cid AND t1.cv = "dummy" AND t6.un = "test";
uid	rl	g1	cid	gg
1	NULL	V1	NULL	1
SELECT t4.uid, t5.rl, t3.gn as g1, t4.cid, t4.gid as gg FROM t3, t6, t1, t4 left join t5 on t5.rid = t4.rid left join t2 on t2.cid = t4.cid WHERE t3.gid=t4.gid AND t6.uid = t4.uid AND t3.must IS NOT NULL AND t6.uc  = t1.cid AND t1.cv = "dummy" AND t6.un = "test";
uid	rl	g1	cid	gg
(SELECT t4.uid, t5.rl, t3.gn as g1, t4.cid, t4.gid as gg FROM t3, t6, t1, t4 left join t5 on t5.rid = t4.rid left join t2 on t2.cid = t4.cid WHERE t3.gid=t4.gid AND t6.uid = t4.uid AND t3.must IS NOT NULL AND t6.uc  = t1.cid AND t1.cv = "dummy" AND t6.un = "test") UNION (SELECT t4.uid, t5.rl, t3.gn as g1, t4.cid, t4.gid as gg FROM t3, t6, t1, t4 left join t5 on t5.rid = t4.rid left join t2 on t2.cid = t4.cid WHERE t3.gid=t4.gid AND t6.uid = t4.uid AND t6.uc  = t1.cid AND t1.cv = "dummy" AND t6.un = "test");
uid	rl	g1	cid	gg
1	NULL	V1	NULL	1
drop table t1,t2,t3,t4,t5,t6;
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');
create table t3 select a,b from t1 union select a,b from t2;
create table t4 (select a,b from t1) union (select a,b from t2) limit 2;
insert into  t4 select a,b from t1 union select a,b from t2;
insert into  t3 (select a,b from t1) union (select a,b from t2) limit 2;
select * from t3;
a	b
1	a
2	b
3	c
4	d
5	f
6	e
1	a
2	b
select * from t4;
a	b
1	a
2	b
1	a
2	b
3	c
4	d
5	f
6	e
drop table t1,t2,t3,t4;
create table t1 (a int);
insert into t1 values (1),(2),(3);
create table t2 (a int);
insert into t2 values (3),(4),(5);
SELECT COUNT(*) FROM (
(SELECT                     * FROM t1) UNION all (SELECT * FROM t2)) q;
COUNT(*)
6
(SELECT SQL_CALC_FOUND_ROWS * FROM t1) UNION all (SELECT * FROM t2) LIMIT 1;
a
1
select found_rows();
found_rows()
6
SELECT COUNT(*) FROM (
(SELECT                     * FROM t1 LIMIT 1) UNION all (SELECT * FROM t2)) q;
COUNT(*)
4
(SELECT SQL_CALC_FOUND_ROWS * FROM t1 LIMIT 1) UNION all (SELECT * FROM t2) LIMIT 2;
a
1
3
select found_rows();
found_rows()
4
SELECT COUNT(*) FROM (
(SELECT                     * FROM t1 LIMIT 1) UNION all (SELECT * FROM t2)) q;
COUNT(*)
4
(SELECT SQL_CALC_FOUND_ROWS * FROM t1 LIMIT 1) UNION all (SELECT * FROM t2);
a
1
3
4
5
select found_rows();
found_rows()
4
SELECT COUNT(*) FROM (
(SELECT                     * FROM t1) UNION all (SELECT * FROM t2 LIMIT 1)) q;
COUNT(*)
4
(SELECT SQL_CALC_FOUND_ROWS * FROM t1) UNION all (SELECT * FROM t2 LIMIT 1);
a
1
2
3
3
select found_rows();
found_rows()
4
SELECT COUNT(*) FROM (
(SELECT                     * FROM t1 LIMIT 1) UNION SELECT * FROM t2) q;
COUNT(*)
4
(SELECT SQL_CALC_FOUND_ROWS * FROM t1 LIMIT 1) UNION SELECT * FROM t2 LIMIT 1;
a
1
select found_rows();
found_rows()
4
SELECT SQL_CALC_FOUND_ROWS * FROM t1 LIMIT 1 UNION all SELECT * FROM t2 LIMIT 2;
ERROR HY000: Incorrect usage of UNION and LIMIT
SELECT COUNT(*) FROM (
(SELECT                     * FROM t1 LIMIT 1) UNION all SELECT * FROM t2) q;
COUNT(*)
4
(SELECT SQL_CALC_FOUND_ROWS * FROM t1 LIMIT 1) UNION all SELECT * FROM t2 LIMIT 2;
a
1
3
select found_rows();
found_rows()
4
SELECT COUNT(*) FROM (
SELECT                     * FROM t1 UNION all SELECT * FROM t2) q;
COUNT(*)
6
SELECT SQL_CALC_FOUND_ROWS * FROM t1 UNION all SELECT * FROM t2 LIMIT 2;
a
1
2
select found_rows();
found_rows()
6
SELECT COUNT(*) FROM (
SELECT                     * FROM t1 UNION SELECT * FROM t2) q;
COUNT(*)
5
SELECT SQL_CALC_FOUND_ROWS * FROM t1 UNION SELECT * FROM t2 LIMIT 2;
a
1
2
select found_rows();
found_rows()
5
SELECT COUNT(*) FROM (
SELECT                     * FROM t1 UNION SELECT * FROM t2) q;
COUNT(*)
5
SELECT SQL_CALC_FOUND_ROWS * FROM t1 UNION SELECT * FROM t2 LIMIT 100;
a
1
2
3
4
5
select found_rows();
found_rows()
5
SELECT SQL_CALC_FOUND_ROWS * FROM t1 LIMIT 100 UNION SELECT * FROM t2;
ERROR HY000: Incorrect usage of UNION and LIMIT
SELECT COUNT(*) FROM (
(SELECT                     * FROM t1 LIMIT 100) UNION SELECT * FROM t2) q;
COUNT(*)
5
(SELECT SQL_CALC_FOUND_ROWS * FROM t1 LIMIT 100) UNION SELECT * FROM t2;
a
1
2
3
4
5
select found_rows();
found_rows()
5
SELECT SQL_CALC_FOUND_ROWS * FROM t1 LIMIT 1 UNION SELECT * FROM t2;
ERROR HY000: Incorrect usage of UNION and LIMIT
SELECT COUNT(*) FROM (
(SELECT                     * FROM t1 LIMIT 1) UNION SELECT * FROM t2) q;
COUNT(*)
4
(SELECT SQL_CALC_FOUND_ROWS * FROM t1 LIMIT 1) UNION SELECT * FROM t2;
a
1
3
4
5
select found_rows();
found_rows()
4
SELECT SQL_CALC_FOUND_ROWS * FROM t1 LIMIT 1 UNION SELECT * FROM t2 LIMIT 2;
ERROR HY000: Incorrect usage of UNION and LIMIT
SELECT COUNT(*) FROM (
(SELECT                     * FROM t1 LIMIT 1) UNION SELECT * FROM t2) q;
COUNT(*)
4
(SELECT SQL_CALC_FOUND_ROWS * FROM t1 LIMIT 1) UNION SELECT * FROM t2 LIMIT 2;
a
1
3
select found_rows();
found_rows()
4
SELECT COUNT(*) FROM (
SELECT                     * FROM t1 UNION SELECT * FROM t2) q;
COUNT(*)
5
SELECT SQL_CALC_FOUND_ROWS * FROM t1 UNION SELECT * FROM t2 LIMIT 2,2;
a
3
4
select found_rows();
found_rows()
5
SELECT SQL_CALC_FOUND_ROWS * FROM t1 limit 2,2 UNION SELECT * FROM t2;
ERROR HY000: Incorrect usage of UNION and LIMIT
SELECT COUNT(*) FROM (
(SELECT                     * FROM t1 limit 2,2) UNION SELECT * FROM t2) q;
COUNT(*)
3
(SELECT SQL_CALC_FOUND_ROWS * FROM t1 limit 2,2) UNION SELECT * FROM t2;
a
3
4
5
select found_rows();
found_rows()
3
SELECT * FROM t1 UNION SELECT * FROM t2 ORDER BY a desc LIMIT 1;
a
5
(SELECT * FROM t1 ORDER by a) UNION ALL (SELECT * FROM t2 ORDER BY a) ORDER BY A desc LIMIT 4;
a
5
4
3
3
(SELECT * FROM t1) UNION all (SELECT SQL_CALC_FOUND_ROWS * FROM t2) LIMIT 1;
ERROR 42000: Incorrect usage/placement of 'SQL_CALC_FOUND_ROWS'
create temporary table t1 select a from t1 union select a from t2;
drop temporary table t1;
create table t1 select a from t1 union select a from t2;
ERROR 42S01: Table 't1' already exists
select a from t1 union select a from t2 order by t2.a;
ERROR 42000: Table 't2' from one of the SELECTs cannot be used in field list
drop table t1,t2;
select length(version()) > 1 as `*` UNION select 2;
*
1
2
create table t1 (a int);
insert into t1 values (0), (3), (1), (2);
explain (select * from t1) union (select * from t1) order by a;
id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	PRIMARY	t1	NULL	ALL	NULL	NULL	NULL	NULL	4	100.00	NULL
2	UNION	t1	NULL	ALL	NULL	NULL	NULL	NULL	4	100.00	NULL
NULL	UNION RESULT	<union1,2>	NULL	ALL	NULL	NULL	NULL	NULL	NULL	NULL	Using temporary; Using filesort
Warnings:
Note	1003	(/* select#1 */ select `test`.`t1`.`a` AS `a` from `test`.`t1`) union (/* select#2 */ select `test`.`t1`.`a` AS `a` from `test`.`t1`) order by `a`
drop table t1;
CREATE TABLE t1 (  id int(3) unsigned default '0') ENGINE=MyISAM;
INSERT INTO t1 (id) VALUES("1");
CREATE TABLE t2 ( id int(3) unsigned default '0',  id_master int(5) default '0',  text1 varchar(5) default NULL,  text2 varchar(5) default NULL) ENGINE=MyISAM;
INSERT INTO t2 (id, id_master, text1, text2) VALUES("1", "1",
"foo1", "bar1");
INSERT INTO t2 (id, id_master, text1, text2) VALUES("2", "1",
"foo2", "bar2");
INSERT INTO t2 (id, id_master, text1, text2) VALUES("3", "1", NULL,
"bar3");
INSERT INTO t2 (id, id_master, text1, text2) VALUES("4", "1",
"foo4", "bar4");
SELECT 1 AS id_master, 1 AS id, NULL AS text1, 'ABCDE' AS text2 UNION SELECT id_master, t2.id, text1, text2 FROM t1 LEFT JOIN t2 ON t1.id = t2.id_master;
id_master	id	text1	text2
1	1	NULL	ABCDE
1	1	foo1	bar1
1	2	foo2	bar2
1	3	NULL	bar3
1	4	foo4	bar4
SELECT 1 AS id_master, 1 AS id, 'ABCDE' AS text1, 'ABCDE' AS text2 UNION SELECT id_master, t2.id, text1, text2 FROM t1 LEFT JOIN t2 ON t1.id = t2.id_master;
id_master	id	text1	text2
1	1	ABCDE	ABCDE
1	1	foo1	bar1
1	2	foo2	bar2
1	3	NULL	bar3
1	4	foo4	bar4
drop table if exists t1,t2;
create table t1 (a int not null primary key auto_increment, b int, key(b));
create table t2 (a int not null primary key auto_increment, b int);
insert into t1 (b) values (1),(2),(2),(3);
insert into t2 (b) values (10),(11),(12),(13);
explain extended (select * from t1 where a=1) union (select * from t2 where a=1);
id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	PRIMARY	t1	NULL	const	PRIMARY	PRIMARY	4	const	1	100.00	NULL
2	UNION	t2	NULL	const	PRIMARY	PRIMARY	4	const	1	100.00	NULL
NULL	UNION RESULT	<union1,2>	NULL	ALL	NULL	NULL	NULL	NULL	NULL	NULL	Using temporary
Warnings:
Warning	1681	'EXTENDED' is deprecated and will be removed in a future release.
Note	1003	(/* select#1 */ select '1' AS `a`,'1' AS `b` from `test`.`t1` where 1) union (/* select#2 */ select '1' AS `a`,'10' AS `b` from `test`.`t2` where 1)
(select * from t1 where a=5) union (select * from t2 where a=1);
a	b
1	10
(select * from t1 where a=5 and a=6) union (select * from t2 where a=1);
a	b
1	10
(select t1.a,t1.b from t1,t2 where t1.a=5) union (select * from t2 where a=1);
a	b
1	10
(select * from t1 where a=1) union (select t1.a,t2.a from t1,t2 where t1.a=t2.a);
a	b
1	1
2	2
3	3
4	4
explain (select * from t1 where a=1 and b=10) union (select straight_join t1.a,t2.a from t1,t2 where t1.a=t2.a);
id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
2	UNION	t1	NULL	index	PRIMARY	PRIMARY	4	NULL	4	100.00	Using index
2	UNION	t2	NULL	eq_ref	PRIMARY	PRIMARY	4	test.t1.a	1	100.00	Using index
NULL	UNION RESULT	<union1,2>	NULL	ALL	NULL	NULL	NULL	NULL	NULL	NULL	Using temporary
Warnings:
Note	1003	(/* select#1 */ select '1' AS `a`,'1' AS `b` from `test`.`t1` where 0) union (/* select#2 */ select straight_join `test`.`t1`.`a` AS `a`,`test`.`t2`.`a` AS `a` from `test`.`t1` join `test`.`t2` where (`test`.`t2`.`a` = `test`.`t1`.`a`))
explain (select * from t1 where a=1) union (select * from t1 where b=1);
id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	PRIMARY	t1	NULL	const	PRIMARY	PRIMARY	4	const	1	100.00	NULL
2	UNION	t1	NULL	ref	b	b	5	const	1	100.00	NULL
NULL	UNION RESULT	<union1,2>	NULL	ALL	NULL	NULL	NULL	NULL	NULL	NULL	Using temporary
Warnings:
Note	1003	(/* select#1 */ select '1' AS `a`,'1' AS `b` from `test`.`t1` where 1) union (/* select#2 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where (`test`.`t1`.`b` = 1))
drop table t1,t2;
create table t1 (   id int not null auto_increment, primary key (id)   ,user_name text );
create table t2 (    id int not null auto_increment, primary key (id)   ,group_name text );
create table t3 (    id int not null auto_increment, primary key (id)   ,user_id int   ,index user_idx (user_id)   ,foreign key (user_id) references users(id)   ,group_id int   ,index group_idx (group_id)   ,foreign key (group_id) references groups(id) );
insert into t1 (user_name) values ('Tester');
insert into t2 (group_name) values ('Group A');
insert into t2 (group_name) values ('Group B');
insert into t3 (user_id, group_id) values (1,1);
select 1 'is_in_group', a.user_name, c.group_name, b.id from t1 a, t3 b, t2 c where a.id = b.user_id and b.group_id = c.id UNION  select 0 'is_in_group', a.user_name, c.group_name, null from t1 a, t2 c;
is_in_group	user_name	group_name	id
1	Tester	Group A	1
0	Tester	Group A	NULL
0	Tester	Group B	NULL
drop table t1, t2, t3;
create table t1 (mat_id MEDIUMINT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY, matintnum CHAR(6) NOT NULL, test MEDIUMINT UNSIGNED NULL);
create table t2 (mat_id MEDIUMINT UNSIGNED NOT NULL, pla_id MEDIUMINT UNSIGNED NOT NULL);
insert into t1 values (NULL, 'a', 1), (NULL, 'b', 2), (NULL, 'c', 3), (NULL, 'd', 4), (NULL, 'e', 5), (NULL, 'f', 6), (NULL, 'g', 7), (NULL, 'h', 8), (NULL, 'i', 9);
insert into t2 values (1, 100), (1, 101), (1, 102), (2, 100), (2, 103), (2, 104), (3, 101), (3, 102), (3, 105);
SELECT mp.pla_id, MIN(m1.matintnum) AS matintnum FROM t2 mp INNER JOIN t1 m1 ON mp.mat_id=m1.mat_id GROUP BY mp.pla_id union SELECT 0, 0;
pla_id	matintnum
100	a
101	a
102	a
103	b
104	b
105	c
0	0
drop table t1, t2;
create table t1 SELECT "a" as a UNION select "aa" as a;
select * from t1;
a
a
aa
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` varchar(2) NOT NULL DEFAULT ''
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 SELECT 12 as a UNION select "aa" as a;
select * from t1;
a
12
aa
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` varchar(2) NOT NULL DEFAULT ''
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 SELECT 12 as a UNION select 12.2 as a;
select * from t1;
a
12.0
12.2
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` decimal(3,1) NOT NULL DEFAULT '0.0'
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t2 (it1 tinyint, it2 tinyint not null, i int not null, ib bigint, f float, d double, y year, da date, dt datetime, sc char(10), sv varchar(10), b blob, tx text);
insert into t2 values (NULL, 1, 3, 4, 1.5, 2.5, 1972, '1972-10-22', '1972-10-22 11:50', 'testc', 'testv', 'tetetetetest', 'teeeeeeeeeeeest');
create table t1 SELECT it2 from t2 UNION select it1 from t2;
select * from t1;
it2
1
NULL
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `it2` tinyint(4) DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 SELECT it2 from t2 UNION select i from t2;
select * from t1;
it2
1
3
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `it2` int(11) NOT NULL DEFAULT '0'
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 SELECT i from t2 UNION select f from t2;
select * from t1;
i
3
1.5
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `i` double DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 SELECT f from t2 UNION select d from t2;
select * from t1;
f
1.5
2.5
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `f` double DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 SELECT ib from t2 UNION select f from t2;
select * from t1;
ib
4
1.5
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `ib` double DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 SELECT ib from t2 UNION select d from t2;
select * from t1;
ib
4
2.5
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `ib` double DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 SELECT f from t2 UNION select y from t2;
select * from t1;
f
1.5
1972
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `f` float DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 SELECT f from t2 UNION select da from t2;
select * from t1;
f
1.5
1972-10-22
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `f` varchar(12) DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 SELECT y from t2 UNION select da from t2;
select * from t1;
y
1972
1972-10-22
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `y` varchar(10) DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 SELECT y from t2 UNION select dt from t2;
select * from t1;
y
1972
1972-10-22 11:50:00
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `y` varchar(19) DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 SELECT da from t2 UNION select dt from t2;
select * from t1;
da
1972-10-22 00:00:00
1972-10-22 11:50:00
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `da` datetime DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 SELECT dt from t2 UNION select trim(sc) from t2;
select trim(dt) from t1;
trim(dt)
1972-10-22 11:50:00
testc
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `dt` varchar(19) DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 SELECT dt from t2 UNION select sv from t2;
select * from t1;
dt
1972-10-22 11:50:00
testv
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `dt` varchar(19) DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 SELECT sc from t2 UNION select sv from t2;
select * from t1;
sc
testc
testv
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `sc` varchar(10) DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 SELECT dt from t2 UNION select b from t2;
select * from t1;
dt
1972-10-22 11:50:00
tetetetetest
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `dt` blob
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 SELECT sv from t2 UNION select b from t2;
select * from t1;
sv
testv
tetetetetest
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `sv` blob
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 SELECT i from t2 UNION select d from t2 UNION select b from t2;
select * from t1;
i
3
2.5
tetetetetest
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `i` blob
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 SELECT sv from t2 UNION select tx from t2;
select * from t1;
sv
testv
teeeeeeeeeeeest
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `sv` text
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 SELECT b from t2 UNION select tx from t2;
select * from t1;
b
tetetetetest
teeeeeeeeeeeest
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `b` blob
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1,t2;
create table t1 select 1 union select -1;
select * from t1;
1
1
-1
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `1` bigint(20) NOT NULL DEFAULT '0'
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 select _latin1"test" union select _latin2"testt" ;
ERROR HY000: Illegal mix of collations (latin1_swedish_ci,COERCIBLE) and (latin2_general_ci,COERCIBLE) for operation 'UNION'
create table t1 select _latin2"test" union select _latin2"testt" ;
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `test` varchar(5) CHARACTER SET latin2 NOT NULL DEFAULT ''
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 (s char(200));
insert into t1 values (repeat("1",200));
create table t2 select * from t1;
insert into t2 select * from t1;
insert into t1 select * from t2;
insert into t2 select * from t1;
insert into t1 select * from t2;
insert into t2 select * from t1;
set local tmp_table_size=1024;
select count(*) from (select * from t1 union all select * from t2 order by 1) b;
count(*)
21
select count(*) from t1;
count(*)
8
select count(*) from t2;
count(*)
13
drop table t1,t2;
set local tmp_table_size=default;
create table t1 (a int, index (a), b int);
insert t1 values (1,1),(2,2),(3,3),(4,4),(5,5);
insert t1 select a+1, a+b from t1;
insert t1 select a+1, a+b from t1;
insert t1 select a+1, a+b from t1;
insert t1 select a+1, a+b from t1;
insert t1 select a+1, a+b from t1;
FLUSH STATUS;
show status like 'Slow_queries';
Variable_name	Value
Slow_queries	0
select count(*) from t1 where a=7;
count(*)
26
show status like 'Slow_queries';
Variable_name	Value
Slow_queries	0
select count(*) from t1 where b=13;
count(*)
10
show status like 'Slow_queries';
Variable_name	Value
Slow_queries	1
select count(*) from t1 where b=13 union select count(*) from t1 where a=7;
count(*)
10
26
show status like 'Slow_queries';
Variable_name	Value
Slow_queries	2
select count(*) from t1 where a=7 union select count(*) from t1 where b=13;
count(*)
26
10
show status like 'Slow_queries';
Variable_name	Value
Slow_queries	3
flush status;
select a from t1 where b not in (1,2,3) union select a from t1 where b not in (4,5,6);
a
4
5
3
6
7
8
9
10
1
2
show status like 'Slow_queries';
Variable_name	Value
Slow_queries	1
drop table t1;
create table t1 (   RID int(11) not null default '0',   IID int(11) not null default '0',    nada varchar(50)  not null,NAME varchar(50) not null,PHONE varchar(50) not null) engine=MyISAM;
insert into t1 ( RID,IID,nada,NAME,PHONE) values (1, 1, 'main', 'a', '111'), (2, 1, 'main', 'b', '222'), (3, 1, 'main', 'c', '333'), (4, 1, 'main', 'd', '444'), (5, 1, 'main', 'e', '555'), (6, 2, 'main', 'c', '333'), (7, 2, 'main', 'd', '454'), (8, 2, 'main', 'e', '555'), (9, 2, 'main', 'f', '666'), (10, 2, 'main', 'g', '777');
select A.NAME, A.PHONE, B.NAME, B.PHONE from t1 A left join t1 B on A.NAME = B.NAME and B.IID = 2 where A.IID = 1 and (A.PHONE <> B.PHONE or B.NAME is null) union select A.NAME, A.PHONE, B.NAME, B.PHONE from t1 B left join t1 A on B.NAME = A.NAME and A.IID = 1 where B.IID = 2 and (A.PHONE <> B.PHONE or A.NAME is null);
NAME	PHONE	NAME	PHONE
NULL	NULL	f	666
NULL	NULL	g	777
a	111	NULL	NULL
b	222	NULL	NULL
d	444	d	454
drop  table t1;
create table t1 (col1 tinyint unsigned, col2 tinyint unsigned);
insert into t1 values (1,2),(3,4),(5,6),(7,8),(9,10);
select col1 n from t1 union select col2 n from t1 order by n;
n
1
2
3
4
5
6
7
8
9
10
alter table t1 add index myindex (col2);
select col1 n from t1 union select col2 n from t1 order by n;
n
1
2
3
4
5
6
7
8
9
10
drop  table t1;
create table t1 (i int);
insert into t1 values (1);
select * from t1 UNION select * from t1;
i
1
select * from t1 UNION ALL select * from t1;
i
1
1
select * from t1 UNION select * from t1 UNION ALL select * from t1;
i
1
1
drop table t1;
select 1 as a union all select 1 union all select 2 union select 1 union all select 2;
a
1
2
2
set sql_select_limit=1;
select 1 union select 2;
1
1
(select 1) union (select 2);
1
1
(select 1) union (select 2) union (select 3) limit 2;
1
1
2
set sql_select_limit=default;
create table t1 (a int);
insert into t1 values (100), (1);
create table t2 (a int);
insert into t2 values (100);
select a from t1 union select a from t2 order by a;
a
1
100
SET SQL_SELECT_LIMIT=1;
select a from t1 union select a from t2 order by a;
a
1
drop table t1, t2;
set sql_select_limit=default;
CREATE TABLE t1 (i int(11) default NULL,c char(1) default NULL,KEY i (i));
CREATE TABLE t2 (i int(11) default NULL,c char(1) default NULL,KEY i (i));
explain (select * from t1) union (select * from t2) order by not_existing_column;
ERROR 42S22: Unknown column 'not_existing_column' in 'order clause'
drop table t1, t2;
CREATE TABLE t1 (uid int(1));
INSERT INTO t1 SELECT 150;
SELECT 'a' UNION SELECT uid FROM t1;
a
a
150
drop table t1;
SET sql_mode = 'NO_ENGINE_SUBSTITUTION';
Warnings:
Warning	3090	Changing sql mode 'NO_AUTO_CREATE_USER' is deprecated. It will be removed in a future release.
CREATE TABLE t1 ( ID1 int(10) unsigned NOT NULL DEFAULT '0' , ID2 datetime NOT NULL DEFAULT '0000-00-00 00:00:00' , DATA1 varchar(10) , DATA2 double(5,4) , DATA3 datetime , PRIMARY KEY (ID1,ID2));
CREATE TABLE t2 ( ID int(3) unsigned NOT NULL DEFAULT '0' , DATA1 timestamp DEFAULT '0000-00-00 00:00:00' , PRIMARY KEY (ID));
(SELECT * FROM t1 AS PARTITIONED, t2 AS
PARTITIONED_B WHERE PARTITIONED_B.ID=PARTITIONED.ID1) UNION
(SELECT * FROM t1 AS PARTITIONED, t2 AS
PARTITIONED_B WHERE PARTITIONED_B.ID=PARTITIONED.ID1) UNION
(SELECT * FROM t1 AS PARTITIONED, t2 AS
PARTITIONED_B WHERE PARTITIONED_B.ID=PARTITIONED.ID1) UNION
(SELECT * FROM t1 AS PARTITIONED, t2 AS
PARTITIONED_B WHERE PARTITIONED_B.ID=PARTITIONED.ID1) UNION
(SELECT * FROM t1 AS PARTITIONED, t2 AS
PARTITIONED_B WHERE PARTITIONED_B.ID=PARTITIONED.ID1) UNION
(SELECT * FROM t1 AS PARTITIONED, t2 AS
PARTITIONED_B WHERE PARTITIONED_B.ID=PARTITIONED.ID1) UNION
(SELECT * FROM t1 AS PARTITIONED, t2 AS
PARTITIONED_B WHERE PARTITIONED_B.ID=PARTITIONED.ID1) UNION
(SELECT * FROM t1 AS PARTITIONED, t2 AS
PARTITIONED_B WHERE PARTITIONED_B.ID=PARTITIONED.ID1) UNION
(SELECT * FROM t1 AS PARTITIONED, t2 AS
PARTITIONED_B WHERE PARTITIONED_B.ID=PARTITIONED.ID1) UNION
(SELECT * FROM t1 AS PARTITIONED, t2 AS
PARTITIONED_B WHERE PARTITIONED_B.ID=PARTITIONED.ID1) UNION
(SELECT * FROM t1 AS PARTITIONED, t2 AS
PARTITIONED_B WHERE PARTITIONED_B.ID=PARTITIONED.ID1) UNION
(SELECT * FROM t1 AS PARTITIONED, t2 AS
PARTITIONED_B WHERE PARTITIONED_B.ID=PARTITIONED.ID1);
ID1	ID2	DATA1	DATA2	DATA3	ID	DATA1
drop table t1,t2;
SET sql_mode = default;
create table t1 (a ENUM('Yes', 'No') NOT NULL);
create table t2 (a ENUM('aaa', 'bbb') NOT NULL);
insert into t1 values ('No');
insert into t2 values ('bbb');
create table t3 (a SET('Yes', 'No') NOT NULL);
create table t4 (a SET('aaa', 'bbb') NOT NULL);
insert into t3 values (1);
insert into t4 values (3);
select "1" as a union select a from t1;
a
1
No
select a as a from t1 union select "1";
a
No
1
select a as a from t2 union select a from t1;
a
bbb
No
select "1" as a union select a from t3;
a
1
Yes
select a as a from t3 union select "1";
a
Yes
1
select a as a from t4 union select a from t3;
a
aaa,bbb
Yes
select a as a from t1 union select a from t4;
a
No
aaa,bbb
drop table t1,t2,t3,t4;
create table t1 as
(select _latin1'test') union
(select _latin1'TEST') union
(select _latin1'TeST');
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `test` varchar(4) NOT NULL DEFAULT ''
) ENGINE=MyISAM DEFAULT CHARSET=latin1
select count(*) from t1;
count(*)
1
drop table t1;
create table t1 as
(select _latin1'test' collate latin1_bin) union
(select _latin1'TEST') union
(select _latin1'TeST');
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `_latin1'test' collate latin1_bin` varchar(4) CHARACTER SET latin1 COLLATE latin1_bin DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
select count(*) from t1;
count(*)
3
drop table t1;
create table t1 as
(select _latin1'test') union
(select _latin1'TEST' collate latin1_bin) union
(select _latin1'TeST');
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `test` varchar(4) CHARACTER SET latin1 COLLATE latin1_bin DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
select count(*) from t1;
count(*)
3
drop table t1;
create table t1 as
(select _latin1'test') union
(select _latin1'TEST') union
(select _latin1'TeST' collate latin1_bin);
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `test` varchar(4) CHARACTER SET latin1 COLLATE latin1_bin DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
select count(*) from t1;
count(*)
3
drop table t1;
create table t2 (
a char character set latin1 collate latin1_swedish_ci,
b char character set latin1 collate latin1_german1_ci);
create table t1 as
(select a from t2) union
(select b from t2);
ERROR HY000: Illegal mix of collations for operation 'UNION'
create table t1 as
(select a collate latin1_german1_ci from t2) union
(select b from t2);
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a collate latin1_german1_ci` varchar(1) CHARACTER SET latin1 COLLATE latin1_german1_ci DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 as
(select a from t2) union
(select b collate latin1_german1_ci from t2);
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` varchar(1) CHARACTER SET latin1 COLLATE latin1_german1_ci DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 as
(select a from t2) union
(select b from t2) union
(select 'c' collate latin1_german1_ci from t2);
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` varchar(1) CHARACTER SET latin1 COLLATE latin1_german1_ci DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
drop table t2;
create table t1(a1 int, f1 char(10));
create table t2
select f2,a1 from (select a1, CAST('2004-12-31' AS DATE) f2 from t1) a
union
select f2,a1 from (select a1, CAST('2004-12-31' AS DATE) f2 from t1) a
order by f2, a1;
show columns from t2;
Field	Type	Null	Key	Default	Extra
f2	date	YES		NULL	
a1	int(11)	YES		NULL	
drop table t1, t2;
create table t1 (f1 int);
create table t2 (f1 int, f2 int ,f3 date);
create table t3 (f1 int, f2 char(10));
create table t4
(
select t2.f3 as sdate
from t1
left outer join t2 on (t1.f1 = t2.f1)
inner join t3 on (t2.f2 = t3.f1)
order by t1.f1, t3.f1, t2.f3
)
union
(
select cast('2004-12-31' as date) as sdate
from t1
left outer join t2 on (t1.f1 = t2.f1)
inner join t3 on (t2.f2 = t3.f1)
group by t1.f1
order by t1.f1, t3.f1, t2.f3
)
order by sdate;
show columns from t4;
Field	Type	Null	Key	Default	Extra
sdate	date	YES		NULL	
drop table t1, t2, t3, t4;
create table t1 (a int not null, b char (10) not null);
insert into t1 values(1,'a'),(2,'b'),(3,'c'),(3,'c');
select * from ((select * from t1 limit 1)) a;
a	b
1	a
select * from ((select * from t1 limit 1) union (select * from t1 limit 1)) a;
a	b
1	a
select * from ((select * from t1 limit 1) union (select * from t1 limit 1) union (select * from t1 limit 1)) a;
a	b
1	a
select * from ((((select * from t1))) union (select * from t1) union (select * from t1)) a;
a	b
1	a
2	b
3	c
select * from ((select * from t1) union (((select * from t1))) union (select * from t1)) a;
a	b
1	a
2	b
3	c
drop table t1;
set @val:=6;
select concat('value is: ', @val) union select 'some text';
concat('value is: ', @val)
value is: 6
some text
select concat(_latin1'a', _ascii'b' collate ascii_bin);
concat(_latin1'a', _ascii'b' collate ascii_bin)
ab
create table t1 (foo varchar(100)) collate ascii_bin;
insert into t1 (foo) values ("foo");
select foo from t1 union select 'bar' as foo from dual;
foo
foo
bar
drop table t1;
CREATE TABLE t1 (
a ENUM('�','�','�') character set utf8 not null default '�',
b ENUM("one", "two") character set utf8,
c ENUM("one", "two")
);
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` enum('�','�','�') CHARACTER SET utf8 NOT NULL DEFAULT '�',
  `b` enum('one','two') CHARACTER SET utf8 DEFAULT NULL,
  `c` enum('one','two') DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
insert into t1 values ('�', 'one', 'one'), ('�', 'two', 'one'), ('�', NULL, NULL);
create table t2 select NULL union select a from t1;
show columns from t2;
Field	Type	Null	Key	Default	Extra
NULL	enum('�','�','�')	YES		NULL	
drop table t2;
create table t2 select a from t1 union select NULL;
show columns from t2;
Field	Type	Null	Key	Default	Extra
a	enum('�','�','�')	YES		NULL	
drop table t2;
create table t2 select a from t1 union select a from t1;
show columns from t2;
Field	Type	Null	Key	Default	Extra
a	varchar(1)	NO			
drop table t2;
create table t2 select a from t1 union select c from t1;
drop table t2;
create table t2 select a from t1 union select b from t1;
show columns from t2;
Field	Type	Null	Key	Default	Extra
a	varchar(3)	YES		NULL	
drop table t2, t1;
create table t1 (f1 decimal(60,25), f2 decimal(60,25));
insert into t1 values (0.0,0.0);
select f1 from t1 union all select f2 from t1;
f1
0.0000000000000000000000000
0.0000000000000000000000000
select 'XXXXXXXXXXXXXXXXXXXX' as description, f1 from t1
union all
select 'YYYYYYYYYYYYYYYYYYYY' as description, f2 from t1;
description	f1
XXXXXXXXXXXXXXXXXXXX	0.0000000000000000000000000
YYYYYYYYYYYYYYYYYYYY	0.0000000000000000000000000
drop table t1;
create table t1 (f1 decimal(60,24), f2 decimal(60,24));
insert into t1 values (0.0,0.0);
select f1 from t1 union all select f2 from t1;
f1
0.000000000000000000000000
0.000000000000000000000000
select 'XXXXXXXXXXXXXXXXXXXX' as description, f1 from t1
union all
select 'YYYYYYYYYYYYYYYYYYYY' as description, f2 from t1;
description	f1
XXXXXXXXXXXXXXXXXXXX	0.000000000000000000000000
YYYYYYYYYYYYYYYYYYYY	0.000000000000000000000000
drop table t1;
create table t1 (a varchar(5));
create table t2 select * from t1 union select 'abcdefghijkl';
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
  `a` varchar(12) DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
select row_format from information_schema.TABLES where table_schema="test" and table_name="t2";
row_format
Dynamic
alter table t2 ROW_FORMAT=fixed;
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
  `a` varchar(12) DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1 ROW_FORMAT=FIXED
drop table t1,t2;
CREATE TABLE t1 (a mediumtext);
CREATE TABLE t2 (b varchar(20));
INSERT INTO t1 VALUES ('a'),('b');
SELECT left(a,100000000) FROM t1 UNION  SELECT b FROM t2;
left(a,100000000)
a
b
create table t3 SELECT left(a,100000000) FROM t1 UNION  SELECT b FROM t2;
show create table t3;
Table	Create Table
t3	CREATE TABLE `t3` (
  `left(a,100000000)` mediumtext
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop tables t1,t2,t3;
CREATE TABLE t1 (a longtext);
CREATE TABLE t2 (b varchar(20));
INSERT INTO t1 VALUES ('a'),('b');
SELECT left(a,100000000) FROM t1 UNION  SELECT b FROM t2;
left(a,100000000)
a
b
create table t3 SELECT left(a,100000000) FROM t1 UNION  SELECT b FROM t2;
show create table t3;
Table	Create Table
t3	CREATE TABLE `t3` (
  `left(a,100000000)` longtext
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop tables t1,t2,t3;
SELECT @tmp_max:= @@global.max_allowed_packet;
@tmp_max:= @@global.max_allowed_packet
4194304
SET @@global.max_allowed_packet=25000000;
Warnings:
Warning	1292	Truncated incorrect max_allowed_packet value: '25000000'
CREATE TABLE t1 (a mediumtext);
CREATE TABLE t2 (b varchar(20));
INSERT INTO t1 VALUES ('a');
CREATE TABLE t3 SELECT REPEAT(a,20000000) AS a FROM t1 UNION SELECT b FROM t2;
SHOW CREATE TABLE t3;
Table	Create Table
t3	CREATE TABLE `t3` (
  `a` longtext
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLES t1,t3;
CREATE TABLE t1 (a tinytext);
INSERT INTO t1 VALUES ('a');
CREATE TABLE t3 SELECT REPEAT(a,2) AS a FROM t1 UNION SELECT b FROM t2;
SHOW CREATE TABLE t3;
Table	Create Table
t3	CREATE TABLE `t3` (
  `a` varchar(510) DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLES t1,t3;
CREATE TABLE t1 (a mediumtext);
INSERT INTO t1 VALUES ('a');
CREATE TABLE t3 SELECT REPEAT(a,2) AS a FROM t1 UNION SELECT b FROM t2;
SHOW CREATE TABLE t3;
Table	Create Table
t3	CREATE TABLE `t3` (
  `a` longtext
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLES t1,t3;
CREATE TABLE t1 (a tinyblob);
INSERT INTO t1 VALUES ('a');
CREATE TABLE t3 SELECT REPEAT(a,2) AS a FROM t1 UNION SELECT b FROM t2;
SHOW CREATE TABLE t3;
Table	Create Table
t3	CREATE TABLE `t3` (
  `a` varbinary(510) DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLES t1,t2,t3;
SET @@global.max_allowed_packet:= @tmp_max;
create table t1 ( id int not null auto_increment, primary key (id), col1 int);
insert into t1 (col1) values (2),(3),(4),(5),(6);
select 99 union all select id from t1 order by 1;
99
1
2
3
4
5
99
select id from t1 union all select 99 order by 1;
id
1
2
3
4
5
99
drop table t1;
SET sql_mode = 'NO_ENGINE_SUBSTITUTION';
Warnings:
Warning	3090	Changing sql mode 'NO_AUTO_CREATE_USER' is deprecated. It will be removed in a future release.
create table t1(f1 char(1), f2 char(5), f3 binary(1), f4 binary(5), f5 timestamp NOT NULL DEFAULT '0000-00-00 00:00:00', f6 varchar(1) character set utf8 collate utf8_general_ci, f7 text);
create table t2 as select *, f6 as f8 from t1 union select *, f7 from t1;
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
  `f1` char(1) DEFAULT NULL,
  `f2` char(5) DEFAULT NULL,
  `f3` binary(1) DEFAULT NULL,
  `f4` binary(5) DEFAULT NULL,
  `f5` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00',
  `f6` varchar(1) CHARACTER SET utf8 DEFAULT NULL,
  `f7` text,
  `f8` mediumtext CHARACTER SET utf8
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1, t2;
SET sql_mode = default;
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1)) union
(select avg(1)) union (select avg(1)) union (select avg(1));
avg(1)
1.0000
select _utf8'12' union select _latin1'12345';
12
12
12345
CREATE TABLE t1 (a int);
INSERT INTO t1 VALUES (3),(1),(2),(4),(1);
SELECT a FROM (SELECT a FROM t1 UNION SELECT a FROM t1 ORDER BY a) AS test;
a
1
2
3
4
SELECT a FROM (SELECT a FROM t1 UNION SELECT a FROM t1 ORDER BY c) AS test;
ERROR 42S22: Unknown column 'c' in 'order clause'
DROP TABLE t1;
(select 1 into @var) union (select 1);
ERROR HY000: Incorrect usage of UNION and INTO
(select 1) union (select 1 into @var);
select @var;
@var
1
(select 2) union (select 1 into @var);
ERROR 42000: Result consisted of more than one row
CREATE TABLE t1 (a int);
INSERT INTO t1 VALUES (10), (20);
CREATE TABLE t2 (b int);
INSERT INTO t2 VALUES (10), (50), (50);
SELECT a,1 FROM t1 
UNION
SELECT b, COUNT(*) FROM t2 GROUP BY b WITH ROLLUP
ORDER BY a;
a	1
NULL	3
10	1
20	1
50	2
SELECT a,1 FROM t1 
UNION
SELECT b, COUNT(*) FROM t2 GROUP BY b WITH ROLLUP
ORDER BY a DESC;
a	1
50	2
20	1
10	1
NULL	3
SELECT a,1 FROM t1 
UNION
SELECT b, COUNT(*) FROM t2 GROUP BY b WITH ROLLUP
ORDER BY a ASC LIMIT 3;
a	1
NULL	3
10	1
20	1
SELECT a,1 FROM t1 
UNION ALL 
SELECT b, COUNT(*) FROM t2 GROUP BY b WITH ROLLUP
ORDER BY a DESC;
a	1
50	2
20	1
10	1
10	1
NULL	3
SELECT a,1 FROM t1
UNION 
(SELECT b, COUNT(*) FROM t2 GROUP BY b WITH ROLLUP ORDER BY a);
ERROR HY000: Incorrect usage of CUBE/ROLLUP and ORDER BY
SELECT a,1 FROM t1
UNION ALL
SELECT b, COUNT(*) FROM t2 GROUP BY b WITH ROLLUP ORDER BY a
UNION
SELECT 1,1;
ERROR HY000: Incorrect usage of UNION and ORDER BY
DROP TABLE t1,t2;
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1), (2), (3);
CREATE TABLE t2 SELECT * FROM (SELECT NULL) a UNION SELECT a FROM t1;
DESC t2;
Field	Type	Null	Key	Default	Extra
NULL	int(11)	YES		NULL	
CREATE TABLE t3 SELECT a FROM t1 UNION SELECT * FROM (SELECT NULL) a;
DESC t3;
Field	Type	Null	Key	Default	Extra
a	int(11)	YES		NULL	
CREATE TABLE t4 SELECT NULL;
DESC t4;
Field	Type	Null	Key	Default	Extra
NULL	binary(0)	YES		NULL	
CREATE TABLE t5 SELECT NULL UNION SELECT NULL;
DESC t5;
Field	Type	Null	Key	Default	Extra
NULL	binary(0)	YES		NULL	
CREATE TABLE t6 
SELECT * FROM (SELECT * FROM (SELECT NULL)a) b UNION SELECT a FROM t1;
DESC t6;
Field	Type	Null	Key	Default	Extra
NULL	int(11)	YES		NULL	
DROP TABLE t1, t2, t3, t4, t5, t6;
CREATE TABLE t1 (f FLOAT(9,6));
CREATE TABLE t2 AS SELECT f FROM t1 UNION SELECT f FROM t1;
SHOW FIELDS FROM t2;
Field	Type	Null	Key	Default	Extra
f	float(9,6)	YES		NULL	
DROP TABLE t1, t2;
CREATE TABLE t1(d DOUBLE(9,6));
CREATE TABLE t2 AS SELECT d FROM t1 UNION SELECT d FROM t1;
SHOW FIELDS FROM t2;
Field	Type	Null	Key	Default	Extra
d	double(9,6)	YES		NULL	
DROP TABLE t1, t2;
CREATE TABLE t1(a INT);
EXPLAIN EXTENDED
SELECT a FROM t1
UNION
SELECT a FROM t1
ORDER BY a;
id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	no matching row in const table
2	UNION	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	no matching row in const table
NULL	UNION RESULT	<union1,2>	NULL	ALL	NULL	NULL	NULL	NULL	NULL	NULL	Using temporary; Using filesort
Warnings:
Warning	1681	'EXTENDED' is deprecated and will be removed in a future release.
Note	1003	/* select#1 */ select NULL AS `a` from `test`.`t1` union /* select#2 */ select NULL AS `a` from `test`.`t1` order by `a`
DROP TABLE t1;
End of 5.0 tests
#
# Bug#32858: Error: "Incorrect usage of UNION and INTO" does not take 
# subselects into account
#
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1);
# Tests fix in parser rule select_derived_union.
SELECT a INTO @v FROM (
SELECT a FROM t1
UNION
SELECT a FROM t1
) alias;
SELECT a INTO OUTFILE 'union.out.file' FROM (
SELECT a FROM t1
UNION
SELECT a FROM t1 WHERE 0
) alias;
SELECT a INTO DUMPFILE 'union.out.file2' FROM (
SELECT a FROM t1
UNION
SELECT a FROM t1 WHERE 0
) alias;
SELECT a FROM t1 UNION SELECT a INTO @v FROM t1;
SELECT a FROM t1 UNION SELECT a INTO OUTFILE 'union.out.file5' FROM t1;
SELECT a FROM t1 UNION SELECT a INTO OUTFILE 'union.out.file6' FROM t1;
SELECT a INTO @v FROM t1 UNION SELECT a FROM t1;
ERROR HY000: Incorrect usage of UNION and INTO
SELECT a INTO OUTFILE 'union.out.file7' FROM t1 UNION SELECT a FROM t1;
ERROR HY000: Incorrect usage of UNION and INTO
SELECT a INTO DUMPFILE 'union.out.file8' FROM t1 UNION SELECT a FROM t1;
ERROR HY000: Incorrect usage of UNION and INTO
# Tests fix in parser rule query_expression_body.
SELECT ( SELECT a UNION SELECT a ) INTO @v FROM t1;
SELECT ( SELECT a UNION SELECT a ) INTO OUTFILE  'union.out.file3' FROM t1;
SELECT ( SELECT a UNION SELECT a ) INTO DUMPFILE 'union.out.file4' FROM t1;
DROP TABLE t1;
# 
# Bug #49734: Crash on EXPLAIN EXTENDED UNION ... ORDER BY 
#   <any non-const-function>
# 
CREATE TABLE t1 (a VARCHAR(10), FULLTEXT KEY a (a));
INSERT INTO t1 VALUES (1),(2);
CREATE TABLE t2 (b INT);
INSERT INTO t2 VALUES (1),(2);
# Should not crash
EXPLAIN EXTENDED
SELECT * FROM t1 UNION SELECT * FROM t1 ORDER BY a + 12;
id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	PRIMARY	t1	NULL	ALL	NULL	NULL	NULL	NULL	2	100.00	NULL
2	UNION	t1	NULL	ALL	NULL	NULL	NULL	NULL	2	100.00	NULL
NULL	UNION RESULT	<union1,2>	NULL	ALL	NULL	NULL	NULL	NULL	NULL	NULL	Using temporary; Using filesort
Warnings:
Warning	1681	'EXTENDED' is deprecated and will be removed in a future release.
Note	1003	/* select#1 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` union /* select#2 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` order by (`a` + 12)
# Should not crash
SELECT * FROM t1 UNION SELECT * FROM t1 ORDER BY a + 12;
a
1
2
# Should not crash
EXPLAIN EXTENDED
SELECT * FROM t1 UNION SELECT * FROM t1
ORDER BY MATCH(a) AGAINST ('+abc' IN BOOLEAN MODE);
id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	PRIMARY	t1	NULL	ALL	NULL	NULL	NULL	NULL	2	100.00	NULL
2	UNION	t1	NULL	ALL	NULL	NULL	NULL	NULL	2	100.00	NULL
NULL	UNION RESULT	<union1,2>	NULL	ALL	NULL	NULL	NULL	NULL	NULL	NULL	Using temporary; Using filesort
Warnings:
Warning	1681	'EXTENDED' is deprecated and will be removed in a future release.
Note	1003	/* select#1 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` union /* select#2 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` order by (match `a` against ('+abc' in boolean mode))
# Should not crash
SELECT * FROM t1 UNION SELECT * FROM t1
ORDER BY MATCH(a) AGAINST ('+abc' IN BOOLEAN MODE);
a
1
2
# Should not crash
(SELECT * FROM t1) UNION (SELECT * FROM t1)
ORDER BY MATCH(a) AGAINST ('+abc' IN BOOLEAN MODE);
a
1
2
# Should not crash
EXPLAIN EXTENDED
SELECT * FROM t1 UNION SELECT * FROM t1
ORDER BY (SELECT a FROM t2 WHERE b = 12);
id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	PRIMARY	t1	NULL	ALL	NULL	NULL	NULL	NULL	2	100.00	NULL
2	UNION	t1	NULL	ALL	NULL	NULL	NULL	NULL	2	100.00	NULL
NULL	UNION RESULT	<union1,2>	NULL	ALL	NULL	NULL	NULL	NULL	NULL	NULL	Using temporary; Using filesort
3	DEPENDENT SUBQUERY	t2	NULL	ALL	NULL	NULL	NULL	NULL	2	50.00	Using where
Warnings:
Warning	1681	'EXTENDED' is deprecated and will be removed in a future release.
Note	1276	Field or reference 'a' of SELECT #3 was resolved in SELECT #1
Note	1003	/* select#1 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` union /* select#2 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` order by (/* select#3 */ select `a` from `test`.`t2` where (`test`.`t2`.`b` = 12))
# Should not crash
SELECT * FROM t1 UNION SELECT * FROM t1
ORDER BY (SELECT a FROM t2 WHERE b = 12);
# Should not crash
SELECT * FROM t2 UNION SELECT * FROM t2
ORDER BY (SELECT * FROM t1 WHERE MATCH(a) AGAINST ('+abc' IN BOOLEAN MODE));
b
1
2
DROP TABLE t1,t2;
#
# Bug#11765255 58201:
# VALGRIND/CRASH WHEN ORDERING BY MULTIPLE AGGREGATE FUNCTIONS
#
select 1 as foo
union
select 2
union
select 3
union
select 4
order by max(42) + max(1) + max(1) + max(1) + max(1) + max(1)
;
ERROR HY000: Expression #1 of ORDER BY contains aggregate function and applies to a UNION
prepare stmt1 from 'select 1 as foo
union
select 2
union
select 3
union
select 4
order by max(42) + max(1) + max(1) + max(1) + max(1) + max(1)
';
ERROR HY000: Expression #1 of ORDER BY contains aggregate function and applies to a UNION
select 1 as foo
union
select 2
union
select 3
union
(select 4)
order by max(42) + max(1) + max(1) + max(1) + max(1) + max(1)
;
ERROR HY000: Expression #1 of ORDER BY contains aggregate function and applies to a UNION
prepare stmt1 from 'select 1 as foo
union
select 2
union
select 3
union
(select 4)
order by max(42) + max(1) + max(1) + max(1) + max(1) + max(1)
';
ERROR HY000: Expression #1 of ORDER BY contains aggregate function and applies to a UNION
End of 5.1 tests
#
# Bug#57986 ORDER BY clause is not used after a UNION, 
#           if embedded in a SELECT
#
CREATE TABLE t1 (c1 VARCHAR(10) NOT NULL, c2 INT NOT NULL);
CREATE TABLE t2 (c1 VARCHAR(10) NOT NULL, c2 INT NOT NULL);
INSERT INTO t1 (c1, c2) VALUES ('t1a', 1), ('t1a', 2), ('t1a', 3), ('t1b', 2), ('t1b', 1);
INSERT INTO t2 (c1, c2) VALUES ('t2a', 1), ('t2a', 2), ('t2a', 3), ('t2b', 2), ('t2b', 1);
SELECT * FROM t1 UNION SELECT * FROM t2 ORDER BY c2, c1;
c1	c2
t1a	1
t1b	1
t2a	1
t2b	1
t1a	2
t1b	2
t2a	2
t2b	2
t1a	3
t2a	3
SELECT * FROM t1 UNION (SELECT * FROM t2) ORDER BY c2, c1;
c1	c2
t1a	1
t1b	1
t2a	1
t2b	1
t1a	2
t1b	2
t2a	2
t2b	2
t1a	3
t2a	3
SELECT * FROM t1 UNION (SELECT * FROM t2 ORDER BY c2, c1);
c1	c2
t1a	1
t1a	2
t1a	3
t1b	2
t1b	1
t2a	1
t2a	2
t2a	3
t2b	2
t2b	1
SELECT c1, c2 FROM (
SELECT c1, c2 FROM t1
UNION
(SELECT c1, c2 FROM t2)
ORDER BY c2, c1
) AS res;
c1	c2
t1a	1
t1b	1
t2a	1
t2b	1
t1a	2
t1b	2
t2a	2
t2b	2
t1a	3
t2a	3
SELECT c1, c2 FROM (
SELECT c1, c2 FROM t1
UNION
(SELECT c1, c2 FROM t2)
ORDER BY c2 DESC, c1 LIMIT 1
) AS res;
c1	c2
t1a	3
SELECT c1, c2 FROM (
SELECT c1, c2 FROM t1
UNION
(SELECT c1, c2 FROM t2 ORDER BY c2 DESC, c1 LIMIT 1)
) AS res;
c1	c2
t1a	1
t1a	2
t1a	3
t1b	2
t1b	1
t2a	3
SELECT c1, c2 FROM (
SELECT c1, c2 FROM t1
UNION
SELECT c1, c2 FROM t2 
ORDER BY c2 DESC, c1 DESC LIMIT 1
) AS res;
c1	c2
t2a	3
SELECT c1, c2 FROM (
(
(SELECT c1, c2 FROM t1)
UNION
(SELECT c1, c2 FROM t2)
)
ORDER BY c2 DESC, c1 ASC LIMIT 1
) AS res;
c1	c2
t1a	3
DROP TABLE t1, t2;
#
# Bug #58970 Problem Subquery (without referencing a table) 
#            and Order By
#
SELECT(SELECT 0 AS a UNION SELECT 1 AS a ORDER BY a ASC  LIMIT 1) AS dev;
dev
0
SELECT(SELECT 0 AS a UNION SELECT 1 AS a ORDER BY a DESC LIMIT 1) AS dev;
dev
1
SELECT(SELECT 0 AS a FROM dual UNION SELECT 1 AS a FROM dual ORDER BY a ASC  LIMIT 1) AS dev;
dev
0
SELECT(SELECT 0 AS a FROM dual UNION SELECT 1 AS a FROM dual ORDER BY a DESC LIMIT 1) AS dev;
dev
1
SELECT(SELECT 1 AS a ORDER BY a) AS dev;
dev
1
SELECT(SELECT 1 AS a LIMIT 1) AS dev;
dev
1
SELECT(SELECT 1 AS a FROM dual ORDER BY a DESC LIMIT 1) AS dev;
dev
1
#
# Bug#11886060: SELECT .. UNION SELECT .. ORDER BY IS WRONGLY PARSED
#
create table t1(b int) engine=innodb;
All 3 should be parsed without errors.
select b as z from t1 union select b from t1 order by z;
z
select b as z from t1 union select b from t1 order by (select z);
z
select b as z from t1 union (select b from t1) order by (select z);
z
drop table t1;
#
# WL#1763 Avoid creating temporary table in UNION ALL
#
EXPLAIN SELECT 1 UNION ALL SELECT 1 LIMIT 1 OFFSET 1;
id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
2	UNION	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
Warnings:
Note	1003	/* select#1 */ select 1 AS `1` union all /* select#2 */ select 1 AS `1` limit 1,1
# Bug #17579498 CHANGES IN DATATYPE OF THE RESULT QUERY IN UNION.
CREATE TABLE t1 (a TIME);
CREATE TABLE t2 (b DATETIME);
CREATE TABLE t3
SELECT a FROM t1 UNION ALL SELECT b FROM t2;
SELECT column_name, column_type
FROM information_schema.columns
WHERE TABLE_NAME='t3';
column_name	column_type
a	datetime
DROP TABLE t1, t2, t3;
# Bug #17602922 RESULT DIFFERENCES IN UNION QUERIES WITH IN
# (SUBQUERY-UNION ALL)
CREATE TABLE t1 (a VARCHAR(1));
INSERT INTO t1 VALUES (NULL);
INSERT INTO t1 VALUES (NULL);
INSERT INTO t1 VALUES ('j');
INSERT INTO t1 VALUES ('k');
INSERT INTO t1 VALUES ('r');
INSERT INTO t1 VALUES ('r');
INSERT INTO t1 VALUES ('h');
SELECT a FROM t1 WHERE a IN (SELECT 'r' FROM t1 UNION ALL SELECT 'j');
a
j
r
r
CREATE TABLE t2
SELECT a FROM t1 WHERE a IN (SELECT 'r' FROM t1 UNION ALL SELECT 'j');
SELECT * FROM t2;
a
j
r
r
DROP TABLE t1, t2;
# Bug #17580869 FOUND_ROWS() VALUE DO NOT MATCH WITH
# UNION-LIMIT QUERIES
CREATE TABLE t1 (a INT PRIMARY KEY);
CREATE TABLE t2 (a INT PRIMARY KEY);
INSERT INTO t2 VALUES (1);
SELECT a, SUM(a) FROM t2 UNION ALL SELECT a, MIN(a) FROM t1 ;
a	SUM(a)
1	1
NULL	NULL
SELECT FOUND_ROWS();
FOUND_ROWS()
2
DROP TABLE t1, t2;
# Bug #17669551 CRASH/ASSERT AT SELECT_CREATE::PREPARE2 AT
# SQL_INSERT.CC
CREATE TABLE t1 (a INT);
CREATE TABLE t2 SELECT a, a FROM t1 UNION ALL SELECT a, a FROM t1;
ERROR 42S21: Duplicate column name 'a'
DROP TABLE t1;
# Bug #17694956 RESULT DIFFERENCES IN UNION ALL QUERIES WITH LIMIT
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1);
(SELECT a FROM t1 ORDER BY a LIMIT 0) UNION ALL SELECT a FROM t1;
a
1
DROP TABLE t1;
# Bug #17708480 FOUND_ROWS() VALUE DO NOT MATCH WITH UNION ALL QUERIES
CREATE TABLE t1 (a INT) ENGINE=MEMORY;
CREATE TABLE t2 (a INT) ENGINE=MEMORY;
INSERT INTO t2 VALUES (1);
SELECT COUNT(*) FROM (
SELECT                     * FROM t2 UNION ALL SELECT * FROM t1) q;
COUNT(*)
1
SELECT SQL_CALC_FOUND_ROWS * FROM t2 UNION ALL SELECT * FROM t1;
a
1
SELECT FOUND_ROWS();
FOUND_ROWS()
1
SELECT COUNT(*) FROM (
SELECT                     * FROM t1 UNION ALL SELECT * FROM t2) q;
COUNT(*)
1
SELECT SQL_CALC_FOUND_ROWS * FROM t1 UNION ALL SELECT * FROM t2;
a
1
SELECT FOUND_ROWS();
FOUND_ROWS()
1
DROP TABLE t1, t2;
# End of WL1763 tests
# Bug#18503515 UNION with set function in ORDER BY should be rejected
# UNIONed queries are non-aggregated:
SELECT 1 AS foo
UNION
SELECT 2
ORDER BY MAX(1);
ERROR HY000: Expression #1 of ORDER BY contains aggregate function and applies to a UNION
prepare stmt from 'SELECT 1 AS foo
UNION
SELECT 2
ORDER BY MAX(1)';
ERROR HY000: Expression #1 of ORDER BY contains aggregate function and applies to a UNION
SELECT MAX(1) AS foo
UNION
SELECT MAX(2)
ORDER BY foo;
foo
1
2
SELECT MAX(1) AS foo
UNION
SELECT MAX(2)
ORDER BY 1 DESC;
foo
2
1
# UNIONed queries are aggregated:
SELECT MAX(1) AS foo
UNION
SELECT MAX(2)
ORDER BY MAX(1);
ERROR HY000: Expression #1 of ORDER BY contains aggregate function and applies to a UNION
CREATE TABLE t1(a INTEGER);
INSERT INTO t1 VALUES (1), (2);
# Subquery, ORDER BY contains outer reference
SELECT (SELECT 1 AS foo
UNION
SELECT 2
ORDER BY a) AS x
FROM t1;
ERROR 21000: Subquery returns more than 1 row
# Subquery, ORDER BY contains outer reference
SELECT (SELECT 1 AS foo
UNION
SELECT 2
ORDER BY t1.a) AS x
FROM t1;
ERROR 42000: Table 't1' from one of the SELECTs cannot be used in field list
# Subquery, ORDER BY contains set function with outer reference
SELECT (SELECT 1 AS foo
UNION
SELECT 2
ORDER BY COUNT(a)) AS x
FROM t1;
ERROR HY000: Expression #1 of ORDER BY contains aggregate function and applies to a UNION
# Subquery, ORDER BY contains set function with outer reference
SELECT (SELECT 1 AS foo
UNION
SELECT 2
ORDER BY COUNT(t1.a)) AS x
FROM t1;
ERROR 42000: Table 't1' from one of the SELECTs cannot be used in field list
# Subquery, ORDER BY contains set function
SELECT (SELECT 1 AS foo
UNION
SELECT 2
ORDER BY COUNT(*)) AS x
FROM t1;
ERROR HY000: Expression #1 of ORDER BY contains aggregate function and applies to a UNION
CREATE TABLE t2(a INTEGER, b INTEGER);
INSERT INTO t2 VALUES (1,10), (2,20);
SELECT MAX(a) FROM t2 GROUP BY b
UNION
SELECT MAX(a) FROM t2 GROUP BY b
ORDER BY max(a);
ERROR 42S22: Unknown column 'a' in 'order clause'
DROP TABLE t1, t2;
#
# Bug #19471564 WL#6737:IN-CONSISTENT DATA-TYPE FOR GEOMETRY TYPES WHILE
# PROJECTING DERIVED TBL.
#
SET @tmp=@@internal_tmp_disk_storage_engine;
SET GLOBAL internal_tmp_disk_storage_engine=InnoDB;
CREATE TABLE t1(g GEOMETRY, p POINT, l LINESTRING);
INSERT INTO t1 (p, l) VALUES (ST_GeomFromText('POINT(1 1)'),
ST_GeomFromText('LINESTRING(0 0,1 1,2 2)'));
SELECT ST_AsText(a) FROM (SELECT p AS a FROM t1 UNION SELECT l FROM t1) t;
ST_AsText(a)
POINT(1 1)
LINESTRING(0 0,1 1,2 2)
CREATE TABLE t2 ENGINE=InnoDB SELECT a FROM
(SELECT p AS a FROM t1 UNION SELECT l FROM t1) t;
SHOW CREATE TABLE t2;
Table	Create Table
t2	CREATE TABLE `t2` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1, t2;
SET GLOBAL internal_tmp_disk_storage_engine=@tmp;
CREATE TABLE geometries (
g GEOMETRY,
pt POINT,
ls LINESTRING,
py POLYGON,
mpt MULTIPOINT,
mls MULTILINESTRING,
mpy MULTIPOLYGON,
gc GEOMETRYCOLLECTION);
INSERT INTO geometries VALUES (
ST_GeomFromText('POLYGON((0 0, 9 0, 9 9, 0 9, 0 0), (2 2, 4 2, 4 4, 2 2))'),
ST_GeomFromText('POINT(0 0)'),
ST_GeomFromText('LINESTRING(0 0, 10 10)'),
ST_GeomFromText('POLYGON((0 0, 9 0, 9 9, 0 9, 0 0), (2 2, 4 2, 4 4, 2 2))'),
ST_GeomFromText('MULTIPOINT(0 0, 1 1, 2 2)'),
ST_GeomFromText('MULTILINESTRING((0 0, 10 10), (10 0, 0 10))'),
ST_GeomFromText('MULTIPOLYGON(((0 0, 9 0, 9 9, 0 0)), '
                               '((2 2, 3 2, 3 3, 2 2)))'),
ST_GeomFromText('GEOMETRYCOLLECTION(POINT(1 1), LINESTRING(2 2, 3 3), '
                                     'POLYGON((0 0, 9 0, 9 9, 0 9, 0 0)))'));
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT g AS a FROM geometries UNION SELECT g FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT pt AS a FROM geometries UNION SELECT g FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT ls AS a FROM geometries UNION SELECT g FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT py AS a FROM geometries UNION SELECT g FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT mpt AS a FROM geometries UNION SELECT g FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT mls AS a FROM geometries UNION SELECT g FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT mpy AS a FROM geometries UNION SELECT g FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT gc AS a FROM geometries UNION SELECT g FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT g AS a FROM geometries UNION SELECT pt FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT pt AS a FROM geometries UNION SELECT pt FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` point DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT ls AS a FROM geometries UNION SELECT pt FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT py AS a FROM geometries UNION SELECT pt FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT mpt AS a FROM geometries UNION SELECT pt FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT mls AS a FROM geometries UNION SELECT pt FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT mpy AS a FROM geometries UNION SELECT pt FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT gc AS a FROM geometries UNION SELECT pt FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT g AS a FROM geometries UNION SELECT ls FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT pt AS a FROM geometries UNION SELECT ls FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT ls AS a FROM geometries UNION SELECT ls FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` linestring DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT py AS a FROM geometries UNION SELECT ls FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT mpt AS a FROM geometries UNION SELECT ls FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT mls AS a FROM geometries UNION SELECT ls FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT mpy AS a FROM geometries UNION SELECT ls FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT gc AS a FROM geometries UNION SELECT ls FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT g AS a FROM geometries UNION SELECT py FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT pt AS a FROM geometries UNION SELECT py FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT ls AS a FROM geometries UNION SELECT py FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT py AS a FROM geometries UNION SELECT py FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` polygon DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT mpt AS a FROM geometries UNION SELECT py FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT mls AS a FROM geometries UNION SELECT py FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT mpy AS a FROM geometries UNION SELECT py FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT gc AS a FROM geometries UNION SELECT py FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT g AS a FROM geometries UNION SELECT mpt FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT pt AS a FROM geometries UNION SELECT mpt FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT ls AS a FROM geometries UNION SELECT mpt FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT py AS a FROM geometries UNION SELECT mpt FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT mpt AS a FROM geometries UNION SELECT mpt FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` multipoint DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT mls AS a FROM geometries UNION SELECT mpt FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT mpy AS a FROM geometries UNION SELECT mpt FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT gc AS a FROM geometries UNION SELECT mpt FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT g AS a FROM geometries UNION SELECT mls FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT pt AS a FROM geometries UNION SELECT mls FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT ls AS a FROM geometries UNION SELECT mls FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT py AS a FROM geometries UNION SELECT mls FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT mpt AS a FROM geometries UNION SELECT mls FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT mls AS a FROM geometries UNION SELECT mls FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` multilinestring DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT mpy AS a FROM geometries UNION SELECT mls FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT gc AS a FROM geometries UNION SELECT mls FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT g AS a FROM geometries UNION SELECT mpy FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT pt AS a FROM geometries UNION SELECT mpy FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT ls AS a FROM geometries UNION SELECT mpy FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT py AS a FROM geometries UNION SELECT mpy FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT mpt AS a FROM geometries UNION SELECT mpy FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT mls AS a FROM geometries UNION SELECT mpy FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT mpy AS a FROM geometries UNION SELECT mpy FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` multipolygon DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT gc AS a FROM geometries UNION SELECT mpy FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT g AS a FROM geometries UNION SELECT gc FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT pt AS a FROM geometries UNION SELECT gc FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT ls AS a FROM geometries UNION SELECT gc FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT py AS a FROM geometries UNION SELECT gc FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT mpt AS a FROM geometries UNION SELECT gc FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT mls AS a FROM geometries UNION SELECT gc FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT mpy AS a FROM geometries UNION SELECT gc FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometry DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 ENGINE=InnoDB SELECT a FROM
(SELECT gc AS a FROM geometries UNION SELECT gc FROM geometries) t;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` geometrycollection DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
DROP TABLE t1;
DROP TABLE geometries;
# 
# Bug#20456178 ASSERTION FAILED: 
#     (ENUM_SET_TYPELIB && GET_REAL_TYPE(ITEM) == MYSQL_TYPE_NULL)
CREATE TABLE t1(a INT) engine=innodb;
CREATE TABLE t2(a SET('a'))engine=innodb;
INSERT INTO t1 VALUES (1);
INSERT INTO t2 VALUES (1);
SELECT a FROM (SELECT a FROM t2) t1
UNION ALL
SELECT 1 FROM t1;
a
a
1
DROP TABLE t1, t2;
#
# Bug #21156155 UNION GEOMETRY TYPE: UNITIALIZED VALUE IN
# ITEM_TYPE_HOLDER::JOIN_TYPES
#
SELECT NULL UNION SELECT POINT(1,1);
NULL
NULL
�?�?
#
# Bug#22602381 FOUND_ROWS() IS NOT WORKING AS EXPECTED WITHOUT
#              SQL_CALC_FOUND_ROWS
#
CREATE TABLE t1(c1 INT);
INSERT INTO t1 VALUES(1),(2),(3);
(SELECT c1 FROM t1) UNION ALL
(SELECT c1 FROM t1) LIMIT 2;
c1
1
2
SELECT FOUND_ROWS();
FOUND_ROWS()
2
(SELECT SQL_CALC_FOUND_ROWS c1 FROM t1) UNION ALL
(SELECT c1 FROM t1) LIMIT 2;
c1
1
2
SELECT FOUND_ROWS();
FOUND_ROWS()
6
(SELECT c1 FROM t1 LIMIT 1) UNION ALL
(SELECT c1 FROM t1 LIMIT 3) LIMIT 2;
c1
1
1
SELECT FOUND_ROWS();
FOUND_ROWS()
2
(SELECT c1 FROM t1 LIMIT 1) UNION ALL
(SELECT c1 FROM t1 LIMIT 1) LIMIT 3;
c1
1
1
SELECT FOUND_ROWS();
FOUND_ROWS()
2
(SELECT c1 FROM t1 LIMIT 3) UNION ALL
(SELECT c1 FROM t1 LIMIT 3) LIMIT 1 OFFSET 4;
c1
2
SELECT FOUND_ROWS();
FOUND_ROWS()
5
(SELECT c1 FROM t1 LIMIT 1) UNION ALL
(SELECT c1 FROM t1 LIMIT 1) LIMIT 1 OFFSET 2;
c1
SELECT FOUND_ROWS();
FOUND_ROWS()
2
DROP TABLE t1;
#End of test for Bug#22602381
#
# Bug #27068222 CREATE TABLE USING SELECT WITH UNION
#               FAILS FOR DATE COLUMN
#
CREATE TABLE `t1` (`date` date NOT NULL);
INSERT INTO t1 VALUES ('2017-03-02'), ('2017-06-22');
CREATE TABLE IF NOT EXISTS t2 AS
SELECT * FROM t1
UNION
SELECT * FROM t1;
DESC t2;
Field	Type	Null	Key	Default	Extra
date	date	NO		NULL	
SELECT * FROM t2;
date
2017-03-02
2017-06-22
DROP TABLE t1, t2;
CREATE TABLE t1 (
i1 INT NOT NULL,
i2 INT NOT NULL DEFAULT '1234',
# non-specified nullability => i3 is nullable
i3 INT,
i4 INT DEFAULT NULL,
i5 INT DEFAULT '5678',
d1 date NOT NULL,
d2 date NOT NULL DEFAULT '2018-01-25',
d3 date,
d4 date DEFAULT NULL,
d5 date DEFAULT '2017-11-14',
g1 geometry NOT NULL
);
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `i1` int(11) NOT NULL,
  `i2` int(11) NOT NULL DEFAULT '1234',
  `i3` int(11) DEFAULT NULL,
  `i4` int(11) DEFAULT NULL,
  `i5` int(11) DEFAULT '5678',
  `d1` date NOT NULL,
  `d2` date NOT NULL DEFAULT '2018-01-25',
  `d3` date DEFAULT NULL,
  `d4` date DEFAULT NULL,
  `d5` date DEFAULT '2017-11-14',
  `g1` geometry NOT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
SET SQL_MODE='';
Warnings:
Warning	3090	Changing sql mode 'NO_AUTO_CREATE_USER' is deprecated. It will be removed in a future release.
SELECT @@SQL_MODE;
@@SQL_MODE

CREATE TEMPORARY TABLE t2 AS
SELECT * FROM t1;
# we see that with CREATE SELECT (no UNION), defaults are inherited.
SHOW CREATE TABLE t2;
Table	Create Table
t2	CREATE TEMPORARY TABLE `t2` (
  `i1` int(11) NOT NULL,
  `i2` int(11) NOT NULL DEFAULT '1234',
  `i3` int(11) DEFAULT NULL,
  `i4` int(11) DEFAULT NULL,
  `i5` int(11) DEFAULT '5678',
  `d1` date NOT NULL,
  `d2` date NOT NULL DEFAULT '2018-01-25',
  `d3` date DEFAULT NULL,
  `d4` date DEFAULT NULL,
  `d5` date DEFAULT '2017-11-14',
  `g1` geometry NOT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TEMPORARY TABLE t2;
CREATE TEMPORARY TABLE t2 AS
SELECT * FROM t1
UNION
SELECT * FROM t1;
SHOW CREATE TABLE t2;
Table	Create Table
t2	CREATE TEMPORARY TABLE `t2` (
  `i1` int(11) NOT NULL DEFAULT '0',
  `i2` int(11) NOT NULL DEFAULT '0',
  `i3` int(11) DEFAULT NULL,
  `i4` int(11) DEFAULT NULL,
  `i5` int(11) DEFAULT NULL,
  `d1` date NOT NULL DEFAULT '0000-00-00',
  `d2` date NOT NULL DEFAULT '0000-00-00',
  `d3` date DEFAULT NULL,
  `d4` date DEFAULT NULL,
  `d5` date DEFAULT NULL,
  `g1` geometry NOT NULL DEFAULT ''
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TEMPORARY TABLE t2;
CREATE TEMPORARY TABLE t2 AS
SELECT * FROM t1
UNION ALL
SELECT * FROM t1;
SHOW CREATE TABLE t2;
Table	Create Table
t2	CREATE TEMPORARY TABLE `t2` (
  `i1` int(11) NOT NULL DEFAULT '0',
  `i2` int(11) NOT NULL DEFAULT '0',
  `i3` int(11) DEFAULT NULL,
  `i4` int(11) DEFAULT NULL,
  `i5` int(11) DEFAULT NULL,
  `d1` date NOT NULL DEFAULT '0000-00-00',
  `d2` date NOT NULL DEFAULT '0000-00-00',
  `d3` date DEFAULT NULL,
  `d4` date DEFAULT NULL,
  `d5` date DEFAULT NULL,
  `g1` geometry NOT NULL DEFAULT ''
) ENGINE=MyISAM DEFAULT CHARSET=latin1
# With UNION and UNION ALL, defaults are not inherited; every
# column gets, as default, NULL (if nullable) or 0 (if not
# nullable). Exception: if strict mode and a date type,
# 0000-00-00 isn't given as default
INSERT INTO t2 VALUES();
SELECT * FROM t2;
i1	i2	i3	i4	i5	d1	d2	d3	d4	d5	g1
0	0	NULL	NULL	NULL	0000-00-00	0000-00-00	NULL	NULL	NULL	
DROP TEMPORARY TABLE t2;
SET SQL_MODE=DEFAULT;
SELECT @@SQL_MODE;
@@SQL_MODE
ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
CREATE TEMPORARY TABLE t2 AS
SELECT * FROM t1;
# we see that with CREATE SELECT (no UNION), defaults are inherited.
SHOW CREATE TABLE t2;
Table	Create Table
t2	CREATE TEMPORARY TABLE `t2` (
  `i1` int(11) NOT NULL,
  `i2` int(11) NOT NULL DEFAULT '1234',
  `i3` int(11) DEFAULT NULL,
  `i4` int(11) DEFAULT NULL,
  `i5` int(11) DEFAULT '5678',
  `d1` date NOT NULL,
  `d2` date NOT NULL DEFAULT '2018-01-25',
  `d3` date DEFAULT NULL,
  `d4` date DEFAULT NULL,
  `d5` date DEFAULT '2017-11-14',
  `g1` geometry NOT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TEMPORARY TABLE t2;
CREATE TEMPORARY TABLE t2 AS
SELECT * FROM t1
UNION
SELECT * FROM t1;
SHOW CREATE TABLE t2;
Table	Create Table
t2	CREATE TEMPORARY TABLE `t2` (
  `i1` int(11) NOT NULL DEFAULT '0',
  `i2` int(11) NOT NULL DEFAULT '0',
  `i3` int(11) DEFAULT NULL,
  `i4` int(11) DEFAULT NULL,
  `i5` int(11) DEFAULT NULL,
  `d1` date NOT NULL,
  `d2` date NOT NULL,
  `d3` date DEFAULT NULL,
  `d4` date DEFAULT NULL,
  `d5` date DEFAULT NULL,
  `g1` geometry NOT NULL DEFAULT ''
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TEMPORARY TABLE t2;
CREATE TEMPORARY TABLE t2 AS
SELECT * FROM t1
UNION ALL
SELECT * FROM t1;
SHOW CREATE TABLE t2;
Table	Create Table
t2	CREATE TEMPORARY TABLE `t2` (
  `i1` int(11) NOT NULL DEFAULT '0',
  `i2` int(11) NOT NULL DEFAULT '0',
  `i3` int(11) DEFAULT NULL,
  `i4` int(11) DEFAULT NULL,
  `i5` int(11) DEFAULT NULL,
  `d1` date NOT NULL,
  `d2` date NOT NULL,
  `d3` date DEFAULT NULL,
  `d4` date DEFAULT NULL,
  `d5` date DEFAULT NULL,
  `g1` geometry NOT NULL DEFAULT ''
) ENGINE=MyISAM DEFAULT CHARSET=latin1
# With UNION and UNION ALL, defaults are not inherited; every
# column gets, as default, NULL (if nullable) or 0 (if not
# nullable). Exception: if strict mode and a date type,
# 0000-00-00 isn't given as default
SELECT * FROM t2;
i1	i2	i3	i4	i5	d1	d2	d3	d4	d5	g1
DROP TEMPORARY TABLE t2;
SET SQL_MODE=DEFAULT;
DROP TABLE t1;
#
# Bug#27197235 USER VARIABLE + UINON + DECIMAL COLUMN RETURNS
#              WRONG VALUES
#
SET NAMES utf8;
SET @advertAcctId = 1000003;
select @advertAcctId as a from dual union all select 1.0 from dual;
a
1000003.0
1.0
SET NAMES latin1;
SET @advertAcctId = 1000003;
select @advertAcctId as a from dual union all select 1.0 from dual;
a
1000003.0
1.0
#
# Bug #29916900 (duplicate of #27903792) [ASSERTION `FIELD_TYPE() ==
# MYSQL_TYPE_GEOMETRY' FAILED]
#
SELECT ST_GEOMFROMTEXT('POINT(0 0)')
UNION
SELECT * FROM (SELECT NULL) AS a;
Man Man