diff options
Diffstat (limited to 'mysql-test/main/union.result')
| -rw-r--r-- | mysql-test/main/union.result | 2785 |
1 files changed, 2785 insertions, 0 deletions
diff --git a/mysql-test/main/union.result b/mysql-test/main/union.result new file mode 100644 index 00000000..aab13d19 --- /dev/null +++ b/mysql-test/main/union.result @@ -0,0 +1,2785 @@ +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 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 type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 4 100.00 +2 UNION t2 ALL NULL NULL NULL NULL 4 100.00 Using filesort +NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL NULL Using filesort +Warnings: +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 select a,b from t1 union all select a,b from t2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 4 +2 UNION t2 ALL NULL NULL NULL NULL 4 +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 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'union select a,b from t2' at line 1 +select a,b from t1 order by a union select a,b from t2; +ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'union select a,b from t2' at line 1 +insert into t3 select a from t1 order by a union select a from t2; +ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'union select a from t2' at line 1 +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 SQL_CALC_FOUND_ROWS * FROM t1 LIMIT 1) UNION SELECT * FROM t2 LIMIT 1; +a +1 +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 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'UNION all SELECT * FROM t2 LIMIT 2' at line 1 +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 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 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 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'UNION SELECT * FROM t2' at line 1 +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 SQL_CALC_FOUND_ROWS * FROM t1 LIMIT 1 UNION SELECT * FROM t2; +ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'UNION SELECT * FROM t2' at line 1 +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 SQL_CALC_FOUND_ROWS * FROM t1 LIMIT 1 UNION SELECT * FROM t2 LIMIT 2; +ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'UNION SELECT * FROM t2 LIMIT 2' at line 1 +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 SQL_CALC_FOUND_ROWS * FROM t1 UNION SELECT * FROM t2 LIMIT 2,2; +a +3 +4 +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 limit 2,2 UNION SELECT * FROM t2; +ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'UNION SELECT * FROM t2' at line 1 +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 * 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 ORDER clause +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 type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 4 +2 UNION t1 ALL NULL NULL NULL NULL 4 +NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL Using filesort +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 type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 const PRIMARY PRIMARY 4 const 1 100.00 +2 UNION t2 const PRIMARY PRIMARY 4 const 1 100.00 +NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL NULL +Warnings: +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 +set @save_optimizer_use_condition_selectivity=@@optimizer_use_condition_selectivity,@save_optimizer_switch=@@optimizer_switch; +SET optimizer_switch='outer_join_with_cache=off',@@optimizer_use_condition_selectivity=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 type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +2 UNION t1 index PRIMARY PRIMARY 4 NULL 4 Using index +2 UNION t2 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using index +NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL +set @@optimizer_use_condition_selectivity=@save_optimizer_use_condition_selectivity,@@optimizer_switch=@save_optimizer_switch; +explain (select * from t1 where a=1) union (select * from t1 where b=1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 const PRIMARY PRIMARY 4 const 1 +2 UNION t1 ref b b 5 const 1 +NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL +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 COLLATE=latin1_swedish_ci +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 COLLATE=latin1_swedish_ci +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 COLLATE=latin1_swedish_ci +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 COLLATE=latin1_swedish_ci +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 COLLATE=latin1_swedish_ci +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 COLLATE=latin1_swedish_ci +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 COLLATE=latin1_swedish_ci +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 COLLATE=latin1_swedish_ci +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 COLLATE=latin1_swedish_ci +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 COLLATE=latin1_swedish_ci +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 COLLATE=latin1_swedish_ci +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 COLLATE=latin1_swedish_ci +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 COLLATE=latin1_swedish_ci +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 COLLATE=latin1_swedish_ci +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 COLLATE=latin1_swedish_ci +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 COLLATE=latin1_swedish_ci +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 COLLATE=latin1_swedish_ci +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 DEFAULT NULL +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +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 DEFAULT NULL +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +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 DEFAULT NULL +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +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 DEFAULT NULL +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +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 DEFAULT NULL +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +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` int(2) NOT NULL DEFAULT 0 +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +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 COLLATE latin2_general_ci NOT NULL DEFAULT '' +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +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'); +SET @save_optimizer_switch=@@optimizer_switch; +SET optimizer_switch='outer_join_with_cache=off'; +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 +a 111 NULL NULL +b 222 NULL NULL +d 444 d 454 +NULL NULL f 666 +NULL NULL g 777 +SET optimizer_switch=@save_optimizer_switch; +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; +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; +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 COLLATE=latin1_swedish_ci +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 COLLATE=latin1_swedish_ci +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 COLLATE=latin1_swedish_ci +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 COLLATE=latin1_swedish_ci +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 COLLATE=latin1_swedish_ci +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 COLLATE=latin1_swedish_ci +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 COLLATE=latin1_swedish_ci +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('ä','ö','ü') character set utf8 not null default 'ü', +b ENUM("one", "two") character set utf8, +c ENUM("one", "two") +); +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` enum('ä','ö','ü') CHARACTER SET utf8mb3 COLLATE utf8mb3_general_ci NOT NULL DEFAULT 'ü', + `b` enum('one','two') CHARACTER SET utf8mb3 COLLATE utf8mb3_general_ci DEFAULT NULL, + `c` enum('one','two') DEFAULT NULL +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +insert into t1 values ('ä', 'one', 'one'), ('ö', 'two', 'one'), ('ü', NULL, NULL); +create table t2 select NULL union select a from t1; +show columns from t2; +Field Type Null Key Default Extra +NULL enum('ä','ö','ü') 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('ä','ö','ü') 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(2) 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 COLLATE=latin1_swedish_ci +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 COLLATE=latin1_swedish_ci 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 DEFAULT NULL +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +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 DEFAULT NULL +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +drop tables t1,t2,t3; +SET @tmp_max= @@global.max_allowed_packet; +SET @@global.max_allowed_packet=25000000; +Warnings: +Warning 1292 Truncated incorrect max_allowed_packet value: '25000000' +connect newconn, localhost, root,,; +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 DEFAULT NULL +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +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 COLLATE=latin1_swedish_ci +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 DEFAULT NULL +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +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 COLLATE=latin1_swedish_ci +DROP TABLES t1,t2,t3; +connection default; +SET @@global.max_allowed_packet:= @tmp_max; +disconnect newconn; +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; +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 utf8mb3 COLLATE utf8mb3_general_ci DEFAULT NULL, + `f7` text DEFAULT NULL, + `f8` mediumtext CHARACTER SET utf8mb3 COLLATE utf8mb3_general_ci DEFAULT NULL +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +drop table t1, t2; +CREATE TABLE t1 +( +c_varchar varchar(1) character set utf8 collate utf8_general_ci, +c_tinytext tinytext, +c_text text, +c_mediumtext mediumtext, +c_longtext longtext +); +CREATE TABLE t2 AS +SELECT c_tinytext, c_text, c_mediumtext, c_longtext FROM t1 +UNION +SELECT c_varchar, c_varchar, c_varchar, c_varchar FROM t1; +SHOW CREATE TABLE t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `c_tinytext` text CHARACTER SET utf8mb3 COLLATE utf8mb3_general_ci DEFAULT NULL, + `c_text` mediumtext CHARACTER SET utf8mb3 COLLATE utf8mb3_general_ci DEFAULT NULL, + `c_mediumtext` longtext CHARACTER SET utf8mb3 COLLATE utf8mb3_general_ci DEFAULT NULL, + `c_longtext` longtext CHARACTER SET utf8mb3 COLLATE utf8mb3_general_ci DEFAULT NULL +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +DROP TABLE t2; +DROP TABLE t1; +(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 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'into @var) union (select 1)' at line 1 +(select 1) union (select 1 into @var); +ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'into @var)' at line 1 +select @var; +@var +NULL +(select 2) union (select 1 into @var); +ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'into @var)' at line 1 +(select 1) union (select 1) into @var; +Warnings: +Warning 1287 '<select expression> INTO <destination>;' is deprecated and will be removed in a future release. Please use 'SELECT <select list> INTO <destination> FROM...' instead +(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 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'UNION +SELECT 1,1' at line 4 +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 type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 system NULL NULL NULL NULL 0 0.00 Const row not found +2 UNION t1 system NULL NULL NULL NULL 0 0.00 Const row not found +NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL NULL Using filesort +Warnings: +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; +# +# 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; +ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'FROM t1' at line 1 +SELECT a FROM t1 UNION SELECT a INTO OUTFILE 'union.out.file5' FROM t1; +ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'FROM t1' at line 1 +SELECT a FROM t1 UNION SELECT a INTO OUTFILE 'union.out.file6' FROM t1; +ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'FROM t1' at line 1 +SELECT a FROM t1 UNION SELECT a FROM t1 INTO @v ; +Warnings: +Warning 1287 '<select expression> INTO <destination>;' is deprecated and will be removed in a future release. Please use 'SELECT <select list> INTO <destination> FROM...' instead +SELECT a FROM t1 UNION SELECT a FROM t1 INTO OUTFILE 'union.out.file5'; +Warnings: +Warning 1287 '<select expression> INTO <destination>;' is deprecated and will be removed in a future release. Please use 'SELECT <select list> INTO <destination> FROM...' instead +SELECT a FROM t1 UNION SELECT a FROM t1 INTO OUTFILE 'union.out.file6'; +Warnings: +Warning 1287 '<select expression> INTO <destination>;' is deprecated and will be removed in a future release. Please use 'SELECT <select list> INTO <destination> FROM...' instead +SELECT a INTO @v FROM t1 UNION SELECT a FROM t1; +ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'UNION SELECT a FROM t1' at line 1 +SELECT a INTO OUTFILE 'union.out.file7' FROM t1 UNION SELECT a FROM t1; +ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'UNION SELECT a FROM t1' at line 1 +SELECT a INTO DUMPFILE 'union.out.file8' FROM t1 UNION SELECT a FROM t1; +ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'UNION SELECT a FROM t1' at line 1 +# 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 type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 +2 UNION t1 ALL NULL NULL NULL NULL 2 100.00 +NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL NULL 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` + 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 type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 +2 UNION t1 ALL NULL NULL NULL NULL 2 100.00 +NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL NULL 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 (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 type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 +2 UNION t1 ALL NULL NULL NULL NULL 2 100.00 +NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL NULL Using filesort +3 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 2 100.00 Using where +Warnings: +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 <expr_cache><`a`>((/* 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; +create table t1 (a int); +insert into t1 values (10),(10),(10),(2),(3),(4),(5),(6),(7),(8),(9),(1),(10); +select a from t1 where false UNION select a from t1 limit 8; +a +10 +2 +3 +4 +5 +6 +7 +8 +(select a from t1 where false) UNION (select a from t1) limit 8; +a +10 +2 +3 +4 +5 +6 +7 +8 +drop table t1; +# +# 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 +# +# mdev-5091: Asseirtion failure for UNION with ORDER BY +# in one of selects +# +CREATE TABLE t1 (i int, c char(1)) ENGINE=MyISAM; +INSERT INTO t1 VALUES (6,'b'); +CREATE VIEW v1 AS SELECT * FROM t1; +( SELECT i FROM v1 GROUP BY i ORDER BY CONCAT( c, c ) LIMIT 1 ) +UNION +( SELECT i FROM t1 ); +i +6 +DROP VIEW v1; +DROP TABLE t1; +# +# mdev-5382: UNION with ORDER BY in subselect +# +CREATE TABLE t1 (a int DEFAULT NULL); +INSERT INTO t1 VALUES (2), (4); +CREATE TABLE t2 (b int DEFAULT NULL); +INSERT INTO t2 VALUES (1), (3); +SELECT c1 FROM (SELECT (SELECT a FROM t1 WHERE t1.a <= t2.b +UNION ALL +SELECT a FROM t1 WHERE t1.a+3<= t2.b +ORDER BY a DESC) AS c1 FROM t2) t3; +c1 +NULL +2 +DROP TABLE t1,t2; +End of 5.3 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 #17059925 : UNIONS COMPUTES ROWS_EXAMINED INCORRECTLY +# +SET @old_slow_query_log= @@global.slow_query_log; +SET @old_log_output= @@global.log_output; +SET @old_long_query_time= @@long_query_time; +SET GLOBAL log_output= "TABLE"; +SET GLOBAL slow_query_log= ON; +SET SESSION long_query_time= 0; +CREATE TABLE t17059925 (a INT); +CREATE TABLE t2 (b INT); +CREATE TABLE t3 (c INT); +INSERT INTO t17059925 VALUES (1), (2), (3); +INSERT INTO t2 VALUES (4), (5), (6); +INSERT INTO t3 VALUES (7), (8), (9); +TRUNCATE table mysql.slow_log; +SELECT * FROM t17059925 UNION SELECT * FROM t2 UNION SELECT * FROM t3; +a +1 +2 +3 +4 +5 +6 +7 +8 +9 +SELECT sql_text, rows_examined FROM mysql.slow_log WHERE sql_text LIKE '%SELECT%t17059925%'; +sql_text rows_examined +SELECT * FROM t17059925 UNION SELECT * FROM t2 UNION SELECT * FROM t3 18 +DROP TABLE t17059925, t2, t3; +SET @@long_query_time= @old_long_query_time; +SET @@global.log_output= @old_log_output; +SET @@global.slow_query_log= @old_slow_query_log; +# +# lp:1010729: Unexpected syntax error from UNION +# (bug #54382) with single-table join nest +# +CREATE TABLE t1 (a int); +CREATE TABLE t2 (b int); +CREATE TABLE t3 (c int); +SELECT a FROM t1 UNION SELECT b FROM t2 JOIN (t3) ON ( t2.b = t3.c ); +a +DROP TABLE t1, t2, t3; +CREATE TABLE t1 (pk int NOT NULL); +CREATE TABLE t2 (pk int NOT NULL, fk int NOT NULL); +SELECT t1.pk FROM t1 LEFT JOIN (t2) ON (t1.pk = t2.fk) +UNION +SELECT t1.pk FROM t1 LEFT JOIN (t2) ON (t1.pk = t2.fk); +pk +DROP TABLE t1,t2; +create table t1 (a int); +insert t1 values (1),(2),(3),(1); +explain select 1 from dual where exists (select max(a) from t1 group by a union select a+2 from t1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used +2 SUBQUERY t1 ALL NULL NULL NULL NULL 4 Using temporary +3 UNION t1 ALL NULL NULL NULL NULL 4 +NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL +drop table t1; +# +# MDEV-6868:MariaDB server crash ( select with union and order by +# with subquery ) +# +CREATE TABLE t1 ( id INTEGER, sample_name1 VARCHAR(100), sample_name2 VARCHAR(100), PRIMARY KEY(id) ); +INSERT INTO t1 ( id, sample_name1, sample_name2 ) VALUES ( 1, 'aaaa', 'bbbb' ), ( 2, 'cccc', 'dddd' ); +( +SELECT sample_name1 AS testname FROM t1 +) +UNION +( +SELECT sample_name2 AS testname FROM t1 C ORDER BY (SELECT T.sample_name1 FROM t1 T WHERE T.id = C.id) +) +; +testname +aaaa +cccc +bbbb +dddd +drop table t1; +# +# MDEV-10172: UNION query returns incorrect rows outside +# conditional evaluation +# +create table t1 (d datetime not null primary key); +insert into t1(d) values ('2016-06-01'),('2016-06-02'),('2016-06-03'),('2016-06-04'); +select * from +( +select * from t1 where d between '2016-06-02' and '2016-06-05' + union +(select * from t1 where d < '2016-06-05' order by d desc limit 1) +) onlyJun2toJun4 +order by d; +d +2016-06-02 00:00:00 +2016-06-03 00:00:00 +2016-06-04 00:00:00 +drop table t1; +End of 5.0 tests +create table t1 (a int, b int); +insert into t1 values (1,1),(2,2),(3,3); +create table t2 (c varchar(30), d varchar(30)); +insert into t1 values ('1','1'),('2','2'),('4','4'); +create table t3 (e int, f int); +insert into t3 values (1,1),(2,2),(31,31),(32,32); +select e,f, (e , f) in (select e,b from t1 union select c,d from t2) as sub from t3; +e f sub +1 1 1 +2 2 1 +31 31 0 +32 32 0 +select avg(f), (e , f) in (select e,b from t1 union select c,d from t2) as sub from t3 group by sub; +avg(f) sub +31.5000 0 +1.5000 1 +drop table t1,t2,t3; +# +# MDEV-14715 Assertion `!table || (!table->read_set || +# bitmap_is_set(table->read_set, field_index))' +# failed in Field_num::val_decimal +# +CREATE TABLE t1 (a INT, b INT) ENGINE=MyISAM; +CREATE VIEW v1 AS SELECT * FROM t1; +INSERT INTO t1 VALUES (1, NULL),(3, 4); +(SELECT a, sum(a) AS f FROM v1 group by a ORDER BY b + sum(a)) +UNION +(SELECT 2, 2); +a f +1 1 +3 3 +2 2 +(SELECT a, sum(a) AS f FROM v1 group by a ORDER BY b + 1) +UNION +(SELECT 2, 2); +a f +1 1 +3 3 +2 2 +SELECT a, b FROM t1 +UNION +(SELECT a, VAR_POP(a) AS f FROM v1 GROUP BY a ORDER BY b/a ); +a b +1 NULL +3 4.0000 +1 0.0000 +3 0.0000 +DROP TABLE t1; +(SELECT a, sum(a) AS f FROM v1 group by a ORDER BY b + 1) +UNION +(SELECT 2, 2); +ERROR HY000: View 'test.v1' references invalid table(s) or column(s) or function(s) or definer/invoker of view lack rights to use them +DROP VIEW v1; +(SELECT a, sum(a) AS f FROM v1 group by a ORDER BY b + 1) +UNION +(SELECT 2, 2); +ERROR 42S02: Table 'test.v1' doesn't exist +# +# 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 +# +# MDEV-13784: query causes seg fault +# +CREATE TABLE t1 (`bug_id` int NOT NULL PRIMARY KEY, `product_id` int NOT NULL); +INSERT INTO t1 VALUES (45199,1184); +CREATE TABLE t2 (`product_id` int NOT NULL,`userid` int NOT NULL, PRIMARY KEY (`product_id`,`userid`)); +INSERT INTO t2 VALUES (1184,103),(1184,624),(1184,1577),(1184,1582); +CREATE TABLE t3 (`id` int NOT NULL PRIMARY KEY,`name` varchar(64)); +CREATE TABLE t4 ( `userid` int NOT NULL PRIMARY KEY, `login_name` varchar(255)); +INSERT INTO t4 VALUES (103,'foo'),(624,'foo'),(1577,'foo'),(1582,'foo'); +CREATE TABLE t5 (`id` int NOT NULL PRIMARY KEY, `name` varchar(64)); +explain select +( +select login_name from t4 where userId = ( +select userid from t2 where product_id = t1.product_id +union +select userid from t2 where product_id = ( +select id from t5 where name = (select name from t3 where id = t1.product_id)) limit 1 ) +) as x from t1 where (t1.bug_id=45199); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 system PRIMARY NULL NULL NULL 1 +2 SUBQUERY t4 eq_ref PRIMARY PRIMARY 4 func 1 Using where +3 SUBQUERY t2 ref PRIMARY PRIMARY 4 const 4 Using index +4 UNION t2 ref PRIMARY PRIMARY 4 func 1 Using where; Using index +5 SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +6 SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +NULL UNION RESULT <union3,4> ALL NULL NULL NULL NULL NULL +select +( +select login_name from t4 where userId = ( +select userid from t2 where product_id = t1.product_id +union +select userid from t2 where product_id = ( +select id from t5 where name = (select name from t3 where id = t1.product_id)) limit 1 ) +) as x from t1 where (t1.bug_id=45199); +x +foo +drop table t1, t2, t3, t4, t5; +End of 5.5 tests +# +# WL#1763 Avoid creating temporary table in UNION ALL +# +EXPLAIN SELECT 1 UNION ALL SELECT 1 LIMIT 1 OFFSET 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used +2 UNION NULL NULL NULL NULL NULL NULL NULL No tables used +# 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; +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 mdev-6874: crash with UNION ALL in a subquery +# +CREATE TABLE t1 (a int, b int); +INSERT INTO t1 VALUES (1,1), (2,8); +SELECT * FROM t1 t1_1 LEFT JOIN t1 t1_2 ON ( t1_2.b = t1_1.a ) +WHERE t1_2.b NOT IN ( SELECT 4 UNION ALL SELECT 5 ); +a b a b +1 1 1 1 +DROP TABLE t1; +# Bug mdev-12788: UNION ALL + impossible having for derived +# with IN subquery in WHERE +# +CREATE TABLE t1 (i int) ENGINE=MyISAM; +INSERT INTO t1 VALUES (1); +CREATE TABLE t2 (pk int PRIMARY KEY) ENGINE=MyISAM; +INSERT INTO t2 VALUES (1),(2); +SELECT 1, 2 +UNION ALL +SELECT i, COUNT(*) FROM ( +SELECT * FROM t1 WHERE i IN ( SELECT pk FROM t2 ) +) AS sq +GROUP BY i +HAVING i = 10; +1 2 +1 2 +EXPLAIN EXTENDED SELECT 1, 2 +UNION ALL +SELECT i, COUNT(*) FROM ( +SELECT * FROM t1 WHERE i IN ( SELECT pk FROM t2 ) +) AS sq +GROUP BY i +HAVING i = 10; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used +2 UNION NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +Warnings: +Note 1003 /* select#1 */ select 1 AS `1`,2 AS `2` union all /* select#2 */ select 1 AS `i`,count(0) AS `COUNT(*)` from `test`.`t2` where 0 group by 1 having 1 +DROP TABLE t1,t2; +# +# MDEV-10120: Wrong result of UNION .. ORDER BY GROUP_CONCAT() +# +CREATE TABLE t1 (a INT); +INSERT t1 VALUES (1),(2),(3); +(SELECT 1 AS a) UNION (SELECT a FROM t1 GROUP BY a) ORDER BY GROUP_CONCAT(a); +ERROR HY000: Expression #1 of ORDER BY contains aggregate function and applies to a UNION +DROP TABLE t1; +# +# Start of 10.3 tests +# +# +# MDEV-12619 UNION creates excessive integer column types for integer literals +# +CREATE TABLE t1 AS SELECT 1; +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `1` int(1) NOT NULL +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +DROP TABLE t1; +CREATE OR REPLACE TABLE t1 AS SELECT 1 UNION SELECT 1; +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `1` int(1) NOT NULL DEFAULT 0 +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +DROP TABLE t1; +CREATE OR REPLACE TABLE t1 AS SELECT * FROM (SELECT 1 UNION SELECT 1) AS t0; +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `1` int(1) NOT NULL DEFAULT 0 +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +DROP TABLE t1; +# +# MDEV-9495 Wrong field type for a UNION of a signed and an unsigned INT expression +# +CREATE TABLE t1 (a INT, b INT UNSIGNED); +INSERT INTO t1 VALUES (0x7FFFFFFF,0xFFFFFFFF); +CREATE TABLE t2 AS SELECT a FROM t1 UNION SELECT b FROM t1; +SHOW CREATE TABLE t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `a` decimal(10,0) DEFAULT NULL +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +SELECT * FROM t2 ORDER BY a; +a +2147483647 +4294967295 +DROP TABLE t2; +CREATE TABLE t2 AS SELECT COALESCE(a,b), COALESCE(b,a) FROM t1; +SHOW CREATE TABLE t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `COALESCE(a,b)` decimal(10,0) DEFAULT NULL, + `COALESCE(b,a)` decimal(10,0) DEFAULT NULL +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +SELECT * FROM t2; +COALESCE(a,b) COALESCE(b,a) +2147483647 4294967295 +DROP TABLE t2; +DROP TABLE t1; +# +# MDEV-9497 UNION and COALESCE produce different field types for DECIMAL+INT +# +CREATE TABLE t1 AS SELECT COALESCE(10.1,CAST(10 AS UNSIGNED)) AS a; +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `a` decimal(3,1) NOT NULL +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +DROP TABLE t1; +CREATE OR REPLACE TABLE t1 AS SELECT 10.1 AS a UNION SELECT CAST(10 AS UNSIGNED); +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 COLLATE=latin1_swedish_ci +DROP TABLE t1; +# +# MDEV-12594 UNION between fixed length double columns does not always preserve scale +# +CREATE TABLE t1 (a FLOAT(20,4), b FLOAT(20,3), c FLOAT(20,4)); +INSERT INTO t1 VALUES (1111,2222,3333); +CREATE TABLE t2 AS SELECT a FROM t1 UNION SELECT a FROM t1; +SHOW CREATE TABLE t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `a` float(20,4) DEFAULT NULL +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +DROP TABLE t2; +CREATE OR REPLACE TABLE t2 SELECT a FROM t1 UNION SELECT c FROM t1; +SHOW CREATE TABLE t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `a` float(20,4) DEFAULT NULL +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +DROP TABLE t2; +CREATE OR REPLACE TABLE t2 SELECT b FROM t1 UNION SELECT b FROM t1; +SHOW CREATE TABLE t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `b` float(20,3) DEFAULT NULL +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +DROP TABLE t2; +CREATE OR REPLACE TABLE t2 SELECT c FROM t1 UNION SELECT c FROM t1; +SHOW CREATE TABLE t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `c` float(20,4) DEFAULT NULL +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +DROP TABLE t2; +CREATE OR REPLACE TABLE t2 SELECT c FROM t1 UNION SELECT a FROM t1; +SHOW CREATE TABLE t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `c` float(20,4) DEFAULT NULL +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +DROP TABLE t2; +CREATE OR REPLACE TABLE t2 AS SELECT a FROM t1 UNION SELECT b FROM t1; +SHOW CREATE TABLE t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `a` float(21,4) DEFAULT NULL +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +DROP TABLE t2; +CREATE OR REPLACE TABLE t2 AS SELECT b FROM t1 UNION SELECT a FROM t1; +SHOW CREATE TABLE t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `b` float(21,4) DEFAULT NULL +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +DROP TABLE t2; +DROP TABLE t1; +# Corner case +CREATE TABLE t1 (a FLOAT(255,4), b FLOAT(255,3)); +INSERT INTO t1 VALUES (1111,2222); +CREATE OR REPLACE TABLE t2 AS SELECT b FROM t1 UNION SELECT a FROM t1; +SHOW CREATE TABLE t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `b` float(255,4) DEFAULT NULL +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +DROP TABLE t2; +DROP TABLE t1; +# +# MDEV-12595 UNION converts INT to BIGINT +# +CREATE TABLE t1 AS SELECT +1, +-1, +COALESCE(1,1), +COALESCE(-1,-1), +COALESCE(1,-1), +COALESCE(-1,1); +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `1` int(1) NOT NULL, + `-1` int(2) NOT NULL, + `COALESCE(1,1)` int(1) NOT NULL, + `COALESCE(-1,-1)` int(2) NOT NULL, + `COALESCE(1,-1)` int(2) NOT NULL, + `COALESCE(-1,1)` int(2) NOT NULL +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +DROP TABLE t1; +CREATE TABLE t1 AS SELECT 1 AS c1,1 AS c2,-1 AS c3,-1 AS c4 UNION SELECT 1,-1,1,-1; +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `c1` int(1) NOT NULL DEFAULT 0, + `c2` int(2) NOT NULL DEFAULT 0, + `c3` int(2) NOT NULL DEFAULT 0, + `c4` int(2) NOT NULL DEFAULT 0 +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +DROP TABLE t1; +# +# MDEV-12599 UNION is not symmetric when mixing INT and CHAR +# +CREATE OR REPLACE TABLE t1 AS SELECT 1 AS c1, 'a' AS c2 UNION SELECT 'a', 1; +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `c1` varchar(1) NOT NULL DEFAULT '', + `c2` varchar(1) NOT NULL DEFAULT '' +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +DROP TABLE t1; +CREATE OR REPLACE TABLE t1 AS SELECT 11112222 AS c1, 'a' AS c2 UNION SELECT 'a', 11112222; +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `c1` varchar(8) NOT NULL DEFAULT '', + `c2` varchar(8) NOT NULL DEFAULT '' +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +DROP TABLE t1; +CREATE OR REPLACE TABLE t1 AS SELECT 111122223333 AS c1, 'a' AS c2 UNION SELECT 'a', 111122223333; +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `c1` varchar(12) NOT NULL DEFAULT '', + `c2` varchar(12) NOT NULL DEFAULT '' +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +DROP TABLE t1; +CREATE OR REPLACE TABLE t1 AS SELECT 1111222233334444 AS c1, 'a' AS c2 UNION SELECT 'a', 1111222233334444; +SHOW CREATE TABLE t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `c1` varchar(16) NOT NULL DEFAULT '', + `c2` varchar(16) NOT NULL DEFAULT '' +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +DROP TABLE t1; +CREATE TABLE t1 (a INT(3), b VARCHAR(1)); +CREATE TABLE t2 AS SELECT a,b FROM t1 UNION SELECT b,a FROM t1; +SHOW CREATE TABLE t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `a` varchar(11) DEFAULT NULL, + `b` varchar(11) DEFAULT NULL +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +DROP TABLE t2; +DROP TABLE t1; +CREATE TABLE t1 (a BIGINT(3), b VARCHAR(1)); +CREATE TABLE t2 AS SELECT a,b FROM t1 UNION SELECT b,a FROM t1; +SHOW CREATE TABLE t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `a` varchar(20) DEFAULT NULL, + `b` varchar(20) DEFAULT NULL +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +DROP TABLE t2; +DROP TABLE t1; +CREATE TABLE t1 (a BIGINT(12), b VARCHAR(1)); +CREATE TABLE t2 AS SELECT a,b FROM t1 UNION SELECT b,a FROM t1; +SHOW CREATE TABLE t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `a` varchar(20) DEFAULT NULL, + `b` varchar(20) DEFAULT NULL +) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +DROP TABLE t2; +DROP TABLE t1; +# +# MDEV-13232: Assertion `(&(&share->intern_lock)->m_mutex)->count > 0 && +# pthread_equal(pthread_self(), (&(&share->intern_lock)->m_mutex)-> +# thread)' failed in _ma_state_info_write +# +CREATE TABLE t1 (c1 CHAR(8)); +INSERT INTO t1 VALUES ('10'),('-10'); +CREATE TABLE t2 (c2 CHAR); +SET @a= CAST('10' AS CHAR); +SELECT c1 FROM t1 UNION SELECT - @a FROM t2; +c1 +10 +-10 +drop table t1,t2; +# +# MDEV-18700: EXPLAIN EXTENDED for query with UNION ALL +# after INTERSECT/EXCEPT operations +# +create table t1 (a int); +insert into t1 values (3), (1), (7), (3), (2), (7), (4); +create table t2 (a int); +insert into t2 values (4), (5), (9), (1), (8), (9); +create table t3 (a int); +insert into t3 values (8), (1), (8), (2), (3), (7), (2); +explain extended +select * from t2 where a < 5 +intersect +select * from t3 where a < 5 +union all +select * from t1 where a > 4; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 6 100.00 Using where +2 INTERSECT t3 ALL NULL NULL NULL NULL 7 100.00 Using where +3 UNION t1 ALL NULL NULL NULL NULL 7 100.00 Using where +NULL UNIT RESULT <unit1,2,3> ALL NULL NULL NULL NULL NULL NULL +Warnings: +Note 1003 /* select#1 */ select `test`.`t2`.`a` AS `a` from `test`.`t2` where `test`.`t2`.`a` < 5 intersect /* select#2 */ select `test`.`t3`.`a` AS `a` from `test`.`t3` where `test`.`t3`.`a` < 5 union all /* select#3 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` > 4 +explain extended +select * from t2 where a < 5 +except +select * from t3 where a < 5 +union all +select * from t1 where a > 4; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 6 100.00 Using where +2 EXCEPT t3 ALL NULL NULL NULL NULL 7 100.00 Using where +3 UNION t1 ALL NULL NULL NULL NULL 7 100.00 Using where +NULL UNIT RESULT <unit1,2,3> ALL NULL NULL NULL NULL NULL NULL +Warnings: +Note 1003 /* select#1 */ select `test`.`t2`.`a` AS `a` from `test`.`t2` where `test`.`t2`.`a` < 5 except /* select#2 */ select `test`.`t3`.`a` AS `a` from `test`.`t3` where `test`.`t3`.`a` < 5 union all /* select#3 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` > 4 +drop table t1,t2,t3; +# +# MDEV-24387: Wrong number of decimal digits in certain UNION/Subqery +# constellation +# +SELECT CAST(1 AS UNSIGNED) UNION ALL SELECT * from (SELECT NULL) t; +Catalog Database Table Table_alias Column Column_alias Type Length Max length Is_null Flags Decimals Charsetnr +def CAST(1 AS UNSIGNED) 246 2 1 Y 32896 0 63 +CAST(1 AS UNSIGNED) +1 +NULL +SELECT CAST(1 AS SIGNED) UNION ALL SELECT * from (SELECT NULL) t; +Catalog Database Table Table_alias Column Column_alias Type Length Max length Is_null Flags Decimals Charsetnr +def CAST(1 AS SIGNED) 3 2 1 Y 32896 0 63 +CAST(1 AS SIGNED) +1 +NULL +SELECT CAST(1 AS SIGNED) UNION ALL SELECT * from (SELECT CAST(1 AS UNSIGNED)) t; +Catalog Database Table Table_alias Column Column_alias Type Length Max length Is_null Flags Decimals Charsetnr +def CAST(1 AS SIGNED) 246 11 1 N 32897 0 63 +CAST(1 AS SIGNED) +1 +1 +SELECT CAST(1 AS UNSIGNED) UNION ALL SELECT NULL; +Catalog Database Table Table_alias Column Column_alias Type Length Max length Is_null Flags Decimals Charsetnr +def CAST(1 AS UNSIGNED) 246 2 1 Y 32896 0 63 +CAST(1 AS UNSIGNED) +1 +NULL +SELECT CAST(1 AS UNSIGNED) UNION ALL SELECT CAST(1 AS SIGNED); +Catalog Database Table Table_alias Column Column_alias Type Length Max length Is_null Flags Decimals Charsetnr +def CAST(1 AS UNSIGNED) 246 2 1 N 32897 0 63 +CAST(1 AS UNSIGNED) +1 +1 +# +# MDEV-24511 null field is created with CREATE..SELECT +# +set @save_default_storage_engine=@@default_storage_engine; +SET @@default_storage_engine=MEMORY; +CREATE TABLE t1 SELECT NULL UNION SELECT NULL; +ALTER TABLE t1 ADD INDEX (`PRIMARY`); +ERROR 42000: Key column 'PRIMARY' doesn't exist in table +CREATE TABLE t2 SELECT NULL; +SHOW CREATE TABLE t2; +Table Create Table +t2 CREATE TABLE `t2` ( + `NULL` binary(0) DEFAULT NULL +) ENGINE=MEMORY DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +CREATE TABLE t3 SELECT NULL UNION SELECT NULL; +SHOW CREATE TABLE t3; +Table Create Table +t3 CREATE TABLE `t3` ( + `NULL` binary(0) DEFAULT NULL +) ENGINE=MEMORY DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +CREATE OR REPLACE TABLE t4 SELECT NULL UNION SELECT NULL; +SHOW CREATE TABLE t4; +Table Create Table +t4 CREATE TABLE `t4` ( + `NULL` binary(0) DEFAULT NULL +) ENGINE=MEMORY DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci +ALTER TABLE t4 ADD INDEX (`NULL`); +DROP TABLE t1, t2, t3, t4; +set @@default_storage_engine=@save_default_storage_engine; +# +# MDEV-29022: add_slave destroy child list and has dead code +# (test added to be sure that ordering by several subqueries works) +# +create table t1 (aa int); +insert into t1 values (-1),(0),(1),(2),(3),(4),(5),(6),(98),(99),(100),(102); +create table t2 (a int, b int); +insert into t2 values (2,2),(2,3),(3,4),(3,5); +select a as a, b as b, +(select max(aa) from t1 where aa < t2.a) as c, +(select max(aa) from t1 where aa < t2.b) as d +from t2 +union select 0 as a, 100 as b, +(select max(aa) from t1 where aa < 0) as c, +(select max(aa) from t1 where aa < 100) as d +union select 0 as a, 99 as b, +(select max(aa) from t1 where aa < 0) as c, +(select max(aa) from t1 where aa < 99) as d +order by (select max(aa) from t1 where aa < a), +(select max(aa) from t1 where aa < b); +a b c d +0 99 -1 98 +0 100 -1 99 +2 2 1 1 +2 3 1 2 +3 4 2 3 +3 5 2 4 +select a as a, b as b, +(select max(aa) from t1 where aa < t2.a) as c, +(select 200 - max(aa) from t1 where aa < t2.b) as d +from t2 +union select 0 as a, 100 as b, +(select max(aa) from t1 where aa < 0) as c, +(select 200 - max(aa) from t1 where aa < 100) as d +union select 0 as a, 99 as b, +(select max(aa) from t1 where aa < 0) as c, +(select 200 - max(aa) from t1 where aa < 99) as d +order by (select max(aa) from t1 where aa < a), +(select 200 - max(aa) from t1 where aa < b); +a b c d +0 100 -1 101 +0 99 -1 102 +2 3 1 198 +2 2 1 199 +3 5 2 196 +3 4 2 197 +(select a as a, b as b, +(select max(aa) from t1 where aa < t2.a) as c, +(select max(aa) from t1 where aa < t2.b) as d +from t2) +union (select 0 as a, 100 as b, +(select max(aa) from t1 where aa < 0) as c, +(select max(aa) from t1 where aa < 100) as d) +union (select 0 as a, 99 as b, +(select max(aa) from t1 where aa < 0) as c, +(select max(aa) from t1 where aa < 99) as d) +order by (select max(aa) from t1 where aa < a), +(select max(aa) from t1 where aa < b); +a b c d +0 99 -1 98 +0 100 -1 99 +2 2 1 1 +2 3 1 2 +3 4 2 3 +3 5 2 4 +(select a as a, b as b, +(select max(aa) from t1 where aa < t2.a) as c, +(select 200 - max(aa) from t1 where aa < t2.b) as d +from t2) +union (select 0 as a, 100 as b, +(select max(aa) from t1 where aa < 0) as c, +(select 200 - max(aa) from t1 where aa < 100) as d) +union (select 0 as a, 99 as b, +(select max(aa) from t1 where aa < 0) as c, +(select 200 - max(aa) from t1 where aa < 99) as d) +order by (select max(aa) from t1 where aa < a), +(select 200 - max(aa) from t1 where aa < b); +a b c d +0 100 -1 101 +0 99 -1 102 +2 3 1 198 +2 2 1 199 +3 5 2 196 +3 4 2 197 +drop table t1,t2; +# +# MDEV-30066 (limit + offset) union all (...) limit = incorrect result +# +create table t1(id int primary key auto_increment, c1 int); +insert into t1(c1) values(1),(2),(3); +(select * from t1 where c1>=1 order by c1 desc limit 2,1) union all (select * from t1 where c1>1 order by c1 desc); +id c1 +1 1 +2 2 +3 3 +(select * from t1 where c1>=1 order by c1 desc limit 2,1) union all (select * from t1 where c1>1 order by c1 desc) limit 2; +id c1 +1 1 +2 2 +drop table t1; +# +# End of 10.3 tests +# |