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246 lines
8.8 KiB
Text
246 lines
8.8 KiB
Text
select 1 union ( select 2 union select 3);
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1
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1
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2
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3
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explain extended
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select 1 union ( select 2 union select 3);
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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4 UNION <derived2> ALL NULL NULL NULL NULL 2 100.00
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2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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3 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL
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NULL UNION RESULT <union1,4> ALL NULL NULL NULL NULL NULL NULL
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Warnings:
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Note 1003 /* select#1 */ select 1 AS `1` union /* select#4 */ select `__4`.`2` AS `2` from (/* select#2 */ select 2 AS `2` union /* select#3 */ select 3 AS `3`) `__4`
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select 1 union ( select 1 union select 1);
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1
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1
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explain extended
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select 1 union ( select 1 union select 1);
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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4 UNION <derived2> ALL NULL NULL NULL NULL 2 100.00
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2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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3 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL
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NULL UNION RESULT <union1,4> ALL NULL NULL NULL NULL NULL NULL
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Warnings:
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Note 1003 /* select#1 */ select 1 AS `1` union /* select#4 */ select `__4`.`1` AS `1` from (/* select#2 */ select 1 AS `1` union /* select#3 */ select 1 AS `1`) `__4`
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select 1 union all ( select 1 union select 1);
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1
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1
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1
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explain extended
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select 1 union all ( select 1 union select 1);
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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4 UNION <derived2> ALL NULL NULL NULL NULL 2 100.00
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2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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3 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL
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Warnings:
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Note 1003 /* select#1 */ select 1 AS `1` union all /* select#4 */ select `__4`.`1` AS `1` from (/* select#2 */ select 1 AS `1` union /* select#3 */ select 1 AS `1`) `__4`
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select 1 union ( select 1 union all select 1);
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1
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1
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explain extended
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select 1 union ( select 1 union all select 1);
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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4 UNION <derived2> ALL NULL NULL NULL NULL 2 100.00
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2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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3 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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NULL UNION RESULT <union1,4> ALL NULL NULL NULL NULL NULL NULL
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Warnings:
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Note 1003 /* select#1 */ select 1 AS `1` union /* select#4 */ select `__4`.`1` AS `1` from (/* select#2 */ select 1 AS `1` union all /* select#3 */ select 1 AS `1`) `__4`
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select 1 union select 1 union all select 1;
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1
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1
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1
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explain extended
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select 1 union select 1 union all select 1;
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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2 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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3 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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NULL UNION RESULT <union1,2,3> ALL NULL NULL NULL NULL NULL NULL
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Warnings:
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Note 1003 /* select#1 */ select 1 AS `1` union /* select#2 */ select 1 AS `1` union all /* select#3 */ select 1 AS `1`
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(select 1 as a) union (select 2) order by a;
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a
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1
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2
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explain extended
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(select 1 as a) union (select 2) order by a;
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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2 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL NULL Using filesort
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Warnings:
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Note 1003 (/* select#1 */ select 1 AS `a`) union (/* select#2 */ select 2 AS `2`) order by `a`
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/* select#1 */ select 1 AS `a` union /* select#2 */ select 2 AS `2` order by `a`;
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a
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1
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2
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explain extended
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/* select#1 */ select 1 AS `a` union /* select#2 */ select 2 AS `2` order by `a`;
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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2 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL NULL Using filesort
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Warnings:
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Note 1003 /* select#1 */ select 1 AS `a` union /* select#2 */ select 2 AS `2` order by `a`
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select 1 union ( select 1 union (select 1 union (select 1 union select 1)));
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1
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1
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explain extended all
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select 1 union ( select 1 union (select 1 union (select 1 union select 1)));
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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8 UNION <derived2> ALL NULL NULL NULL NULL 2 100.00
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2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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7 UNION <derived3> ALL NULL NULL NULL NULL 2 100.00
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3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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6 UNION <derived4> ALL NULL NULL NULL NULL 2 100.00
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4 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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5 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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NULL UNION RESULT <union4,5> ALL NULL NULL NULL NULL NULL NULL
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NULL UNION RESULT <union3,6> ALL NULL NULL NULL NULL NULL NULL
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NULL UNION RESULT <union2,7> ALL NULL NULL NULL NULL NULL NULL
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NULL UNION RESULT <union1,8> ALL NULL NULL NULL NULL NULL NULL
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Warnings:
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Note 1003 /* select#1/0 Filter Select: select `1` AS `1` */ select 1 AS `1` union /* select#8/0 */ select `__8`.`1` AS `1` from (/* select#2/1 Filter Select: select `1` AS `1` */ select 1 AS `1` union /* select#7/1 */ select `__7`.`1` AS `1` from (/* select#3/2 Filter Select: select `1` AS `1` */ select 1 AS `1` union /* select#6/2 */ select `__6`.`1` AS `1` from (/* select#4/3 Filter Select: select `1` AS `1` */ select 1 AS `1` union /* select#5/3 */ select 1 AS `1`) `__6`) `__7`) `__8`
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#
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# MDEV-6341: INSERT ... SELECT UNION with parenthesis
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#
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create table t1 (a int, b int);
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insert into t1 (select 1,1 union select 2,2);
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select * from t1 order by 1;
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a b
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1 1
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2 2
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delete from t1;
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insert into t1 select 1,1 union select 2,2;
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select * from t1 order by 1;
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a b
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1 1
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2 2
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drop table t1;
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CREATE OR REPLACE TABLE t1 AS SELECT 1 AS a UNION SELECT 2;
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select * from t1 order by 1;
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a
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1
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2
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drop table t1;
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CREATE OR REPLACE TABLE t1 AS (SELECT 1 AS a UNION SELECT 2);
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select * from t1 order by 1;
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a
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1
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2
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drop table t1;
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CREATE OR REPLACE VIEW v1 AS (SELECT 1 AS a);
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show create view v1;
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View Create View character_set_client collation_connection
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v1 CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v1` AS (select 1 AS `a`) latin1 latin1_swedish_ci
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drop view v1;
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CREATE OR REPLACE VIEW v1 AS SELECT 1 AS a UNION SELECT 2;
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show create view v1;
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View Create View character_set_client collation_connection
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v1 CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v1` AS select 1 AS `a` union select 2 AS `2` latin1 latin1_swedish_ci
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drop view v1;
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CREATE OR REPLACE VIEW v1 AS (SELECT 1 AS a UNION SELECT 2);
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show create view v1;
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View Create View character_set_client collation_connection
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v1 CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v1` AS select 1 AS `a` union select 2 AS `2` latin1 latin1_swedish_ci
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drop view v1;
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#
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# MDEV-10028: Syntax error on ((SELECT ...) UNION (SELECT ...))
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#
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CREATE TABLE t1 (a INT);
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INSERT INTO t1 VALUES (10);
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INSERT INTO t1 VALUES (20);
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INSERT INTO t1 VALUES (30);
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((SELECT a FROM t1) UNION (SELECT a FROM t1));
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a
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10
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20
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30
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(SELECT * FROM t1 UNION SELECT * FROM t1);
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a
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10
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20
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30
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((SELECT a FROM t1) LIMIT 1);
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a
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10
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SELECT * FROM (SELECT 1 UNION (SELECT 2 UNION SELECT 3)) t1;
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1
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1
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2
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3
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DROP TABLE t1;
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#
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# test of several levels of ORDER BY / LIMIT
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#
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create table t1 (a int, b int);
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insert into t1 (a,b) values (1, 100), (2, 200), (3,30), (4,4);
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select a,b from t1 order by 1 limit 3;
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a b
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1 100
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2 200
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3 30
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(select a,b from t1 order by 1 limit 3) order by 2 limit 2;
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a b
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3 30
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1 100
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(select 10,1000 union select a,b from t1 order by 1 limit 3) order by 2 limit 2;
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10 1000
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3 30
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1 100
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((select a,b from t1 order by 1 limit 3) order by 2 limit 2) order by 1 limit 1;
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a b
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1 100
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((select a,b from t1 order by 1 limit 3) order by 2 limit 2) order by 1;
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a b
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1 100
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3 30
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drop table t1;
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#
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# MDEV-16359: union with 3 selects in brackets
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#
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select 1 union select 1 union select 1;
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1
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1
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(select 1 union select 1 union select 1);
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1
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1
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((select 1) union (select 1) union (select 1));
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1
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1
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#
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# MDEV-16357: union in brackets with tail
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# union with tail in brackets
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#
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CREATE TABLE t1 (a int);
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INSERT INTO t1 VALUES(1),(2),(3),(4);
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CREATE TABLE t2 (a int);
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INSERT INTO t2 VALUES (4),(5),(6),(7);
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(SELECT a FROM t1 UNION SELECT a FROM t2) LIMIT 1;
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a
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1
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(SELECT a FROM t1 UNION SELECT a FROM t2) ORDER BY a DESC;
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a
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7
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6
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5
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4
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3
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2
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1
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(SELECT a FROM t1 UNION SELECT a FROM t2 LIMIT 1);
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a
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1
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DROP TABLE t1,t2;
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# End of 10.4 tests
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