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4287 lines
178 KiB
4287 lines
178 KiB
drop table if exists t1,t2,t3;
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select * from (select 2 from DUAL) b;
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2
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2
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SELECT 1 as a FROM (SELECT 1 UNION SELECT a) b;
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ERROR 42S22: Unknown column 'a' in 'field list'
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SELECT 1 as a FROM (SELECT a UNION SELECT 1) b;
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ERROR 42S22: Unknown column 'a' in 'field list'
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CREATE TABLE t1 (a int not null, b char (10) not null);
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insert into t1 values(1,'a'),(2,'b'),(3,'c'),(3,'c');
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CREATE TABLE t2 (a int not null, b char (10) not null);
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insert into t2 values (3,'c'),(4,'d'),(5,'f'),(6,'e');
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select t1.a,t3.y from t1,(select a as y from t2 where b='c') as t3 where t1.a = t3.y;
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a y
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3 3
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3 3
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select t1.a,t3.a from t1,(select * from t2 where b='c') as t3 where t1.a = t3.a;
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a a
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3 3
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3 3
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CREATE TABLE t3 (a int not null, b char (10) not null);
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insert into t3 values (3,'f'),(4,'y'),(5,'z'),(6,'c');
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select t1.a,t4.y from t1,(select t2.a as y from t2,(select t3.b from t3 where t3.a>3) as t5 where t2.b=t5.b) as t4 where t1.a = t4.y;
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a y
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3 3
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3 3
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SELECT a FROM (SELECT 1 FROM (SELECT 1) a HAVING a=1) b;
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ERROR 42S22: Unknown column 'a' in 'having clause'
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SELECT a,b as a FROM (SELECT '1' as a,'2' as b) b HAVING a=1;
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ERROR 23000: Column 'a' in having clause is ambiguous
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SELECT a,2 as a FROM (SELECT '1' as a) b HAVING a=2;
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a a
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1 2
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SELECT a,2 as a FROM (SELECT '1' as a) b HAVING a=1;
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a a
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SELECT 1 FROM (SELECT 1) a WHERE a=2;
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ERROR 42S22: Unknown column 'a' in 'where clause'
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SELECT (SELECT 1) as a FROM (SELECT 1 FROM t1 HAVING a=1) as a;
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ERROR 42S22: Unknown column 'a' in 'having clause'
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select * from t1 as x1, (select * from t1) as x2;
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a b a b
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1 a 1 a
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1 a 2 b
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1 a 3 c
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1 a 3 c
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2 b 1 a
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2 b 2 b
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2 b 3 c
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2 b 3 c
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3 c 1 a
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3 c 1 a
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3 c 2 b
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3 c 2 b
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3 c 3 c
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3 c 3 c
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3 c 3 c
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3 c 3 c
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explain select * from t1 as x1, (select * from t1) as x2;
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id select_type table partitions type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE x1 NULL ALL NULL NULL NULL NULL 4 100.00 NULL
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1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 4 100.00 Using join buffer (Block Nested Loop)
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Warnings:
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Note 1003 /* select#1 */ select `test`.`x1`.`a` AS `a`,`test`.`x1`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` `x1` join `test`.`t1`
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drop table if exists t2,t3;
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select * from (select 1) as a;
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1
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1
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select a from (select 1 as a) as b;
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a
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1
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select 1 from (select 1) as a;
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1
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1
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select * from (select * from t1 union select * from t1) a;
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a b
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1 a
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2 b
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3 c
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select * from (select * from t1 union all select * from t1) a;
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a b
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1 a
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2 b
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3 c
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3 c
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1 a
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2 b
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3 c
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3 c
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select * from (select * from t1 union all select * from t1 limit 2) a;
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a b
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1 a
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2 b
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explain select * from (select * from t1 union select * from t1) a;
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id select_type table partitions type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY <derived2> NULL ALL NULL NULL NULL NULL 8 100.00 NULL
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2 DERIVED t1 NULL ALL NULL NULL NULL NULL 4 100.00 NULL
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3 UNION t1 NULL ALL NULL NULL NULL NULL 4 100.00 NULL
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NULL UNION RESULT <union2,3> NULL ALL NULL NULL NULL NULL NULL NULL Using temporary
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Warnings:
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Note 1003 /* select#1 */ select `a`.`a` AS `a`,`a`.`b` AS `b` from (/* select#2 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` union /* select#3 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1`) `a`
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explain select * from (select * from t1 union all select * from t1) a;
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id select_type table partitions type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY <derived2> NULL ALL NULL NULL NULL NULL 8 100.00 NULL
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2 DERIVED t1 NULL ALL NULL NULL NULL NULL 4 100.00 NULL
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3 UNION t1 NULL ALL NULL NULL NULL NULL 4 100.00 NULL
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Warnings:
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Note 1003 /* select#1 */ select `a`.`a` AS `a`,`a`.`b` AS `b` from (/* select#2 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` union all /* select#3 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1`) `a`
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CREATE TABLE t2 (a int not null);
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insert into t2 values(1);
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select * from (select * from t1 where t1.a=(select a from t2 where t2.a=t1.a)) a;
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a b
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1 a
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select * from (select * from t1 where t1.a=(select t2.a from t2 where t2.a=t1.a) union select t1.a, t1.b from t1) a;
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a b
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1 a
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2 b
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3 c
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explain select * from (select t1.*, t2.a as t2a from t1,t2 where t1.a=t2.a) t1;
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id select_type table partitions type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE t2 NULL system NULL NULL NULL NULL 1 100.00 NULL
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1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 4 25.00 Using where
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Warnings:
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Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,'1' AS `t2a` from `test`.`t1` where (`test`.`t1`.`a` = '1')
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drop table t1, t2;
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create table t1(a int not null, t char(8), index(a));
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SELECT * FROM (SELECT * FROM t1) as b ORDER BY a ASC LIMIT 0,20;
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a t
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1 1
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2 2
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3 3
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4 4
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5 5
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6 6
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7 7
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8 8
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9 9
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10 10
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11 11
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12 12
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13 13
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14 14
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15 15
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16 16
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17 17
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18 18
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19 19
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20 20
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explain select count(*) from t1 as tt1, (select * from t1) as tt2;
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id select_type table partitions type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
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Warnings:
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Note 1003 /* select#1 */ select count(0) AS `count(*)` from `test`.`t1` `tt1` join `test`.`t1`
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drop table t1;
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SELECT * FROM (SELECT (SELECT * FROM (SELECT 1 as a) as a )) as b;
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(SELECT * FROM (SELECT 1 as a) as a )
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1
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select * from (select 1 as a) b left join (select 2 as a) c using(a);
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a
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1
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SELECT * FROM (SELECT 1 UNION SELECT a) b;
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ERROR 42S22: Unknown column 'a' in 'field list'
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SELECT 1 as a FROM (SELECT a UNION SELECT 1) b;
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ERROR 42S22: Unknown column 'a' in 'field list'
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SELECT 1 as a FROM (SELECT 1 UNION SELECT a) b;
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ERROR 42S22: Unknown column 'a' in 'field list'
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select 1 from (select 2) a order by 0;
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ERROR 42S22: Unknown column '0' in 'order clause'
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create table t1 (id int);
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insert into t1 values (1),(2),(3);
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describe select * from (select * from t1 group by id) bar;
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id select_type table partitions type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY <derived2> NULL ALL NULL NULL NULL NULL 3 100.00 NULL
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2 DERIVED t1 NULL ALL NULL NULL NULL NULL 3 100.00 Using temporary
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Warnings:
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Note 1003 /* select#1 */ select `bar`.`id` AS `id` from (/* select#2 */ select `test`.`t1`.`id` AS `id` from `test`.`t1` group by `test`.`t1`.`id`) `bar`
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drop table t1;
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create table t1 (mat_id MEDIUMINT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY, matintnum CHAR(6) NOT NULL, test MEDIUMINT UNSIGNED NULL) charset utf8mb4;
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create table t2 (mat_id MEDIUMINT UNSIGNED NOT NULL, pla_id MEDIUMINT UNSIGNED NOT NULL);
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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);
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insert into t2 values (1, 100), (1, 101), (1, 102), (2, 100), (2, 103), (2, 104), (3, 101), (3, 102), (3, 105);
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analyze table t1, t2;
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Table Op Msg_type Msg_text
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test.t1 analyze status OK
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test.t2 analyze status OK
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SELECT STRAIGHT_JOIN d.pla_id, m2.mat_id FROM t1 m2 INNER JOIN (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) d ON d.matintnum=m2.matintnum;
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pla_id mat_id
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100 1
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101 1
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102 1
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103 2
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104 2
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105 3
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SELECT STRAIGHT_JOIN d.pla_id, m2.test FROM t1 m2 INNER JOIN (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) d ON d.matintnum=m2.matintnum;
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pla_id test
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100 1
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101 1
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102 1
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103 2
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104 2
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105 3
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explain SELECT STRAIGHT_JOIN d.pla_id, m2.mat_id FROM t1 m2 INNER JOIN (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) d ON d.matintnum=m2.matintnum;
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id select_type table partitions type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY m2 NULL ALL NULL NULL NULL NULL 9 100.00 NULL
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1 PRIMARY <derived2> NULL ref <auto_key0> <auto_key0> 25 test.m2.matintnum 2 100.00 NULL
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2 DERIVED mp NULL ALL NULL NULL NULL NULL 9 100.00 Using temporary
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2 DERIVED m1 NULL eq_ref PRIMARY PRIMARY 3 test.mp.mat_id 1 100.00 NULL
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Warnings:
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Note 1003 /* select#1 */ select straight_join `d`.`pla_id` AS `pla_id`,`test`.`m2`.`mat_id` AS `mat_id` from `test`.`t1` `m2` join (/* select#2 */ select `test`.`mp`.`pla_id` AS `pla_id`,min(`test`.`m1`.`matintnum`) AS `matintnum` from `test`.`t2` `mp` join `test`.`t1` `m1` where (`test`.`m1`.`mat_id` = `test`.`mp`.`mat_id`) group by `test`.`mp`.`pla_id`) `d` where (`d`.`matintnum` = `test`.`m2`.`matintnum`)
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explain SELECT STRAIGHT_JOIN d.pla_id, m2.test FROM t1 m2 INNER JOIN (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) d ON d.matintnum=m2.matintnum;
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id select_type table partitions type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY m2 NULL ALL NULL NULL NULL NULL 9 100.00 NULL
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1 PRIMARY <derived2> NULL ref <auto_key0> <auto_key0> 25 test.m2.matintnum 2 100.00 NULL
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2 DERIVED mp NULL ALL NULL NULL NULL NULL 9 100.00 Using temporary
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2 DERIVED m1 NULL eq_ref PRIMARY PRIMARY 3 test.mp.mat_id 1 100.00 NULL
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Warnings:
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Note 1003 /* select#1 */ select straight_join `d`.`pla_id` AS `pla_id`,`test`.`m2`.`test` AS `test` from `test`.`t1` `m2` join (/* select#2 */ select `test`.`mp`.`pla_id` AS `pla_id`,min(`test`.`m1`.`matintnum`) AS `matintnum` from `test`.`t2` `mp` join `test`.`t1` `m1` where (`test`.`m1`.`mat_id` = `test`.`mp`.`mat_id`) group by `test`.`mp`.`pla_id`) `d` where (`d`.`matintnum` = `test`.`m2`.`matintnum`)
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drop table t1,t2;
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SELECT a.x FROM (SELECT 1 AS x) AS a HAVING a.x = 1;
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x
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1
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create user mysqltest_1;
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create table t1 select 1 as a;
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select 2 as a from (select * from t1) b;
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ERROR 3D000: No database selected
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use test;
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select 2 as a from (select * from t1) b;
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a
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2
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drop table t1;
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select mail_id, if(folder.f_description!='', folder.f_description, folder.f_name) as folder_name, date, address_id, phrase, address, subject from folder, (select mail.mail_id as mail_id, date_format(mail.h_date, '%b %e, %Y %h:%i') as date, mail.folder_id, sender.address_id as address_id, sender.phrase as phrase, sender.address as address, mail.h_subject as subject from mail left join mxa as mxa_sender on mail.mail_id=mxa_sender.mail_id and mxa_sender.type='from' left join address as sender on mxa_sender.address_id=sender.address_id mxa as mxa_recipient, address as recipient, where 1 and mail.mail_id=mxa_recipient.mail_id and mxa_recipient.address_id=recipient.address_id and mxa_recipient.type='to' and match(sender.phrase, sender.address, sender.comment) against ('jeremy' in boolean mode) and match(recipient.phrase, recipient.address, recipient.comment) against ('monty' in boolean mode) order by mail.h_date desc limit 0, 25 ) as query where query.folder_id=folder.folder_id;
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ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'mxa as mxa_recipient, address as recipient, where 1 and mail.mail_id=mxa_r' at line 1
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create table t1 (a int);
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insert into t1 values (1),(2),(3);
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update (select * from t1) as t1 set a = 5;
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ERROR HY000: The target table t1 of the UPDATE is not updatable
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update (select * from t1) as t1, t1 as t2 set t1.a = 5;
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ERROR HY000: The target table t1 of the UPDATE is not updatable
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delete from (select * from t1);
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ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '(select * from t1)' at line 1
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delete from (select * from t1) as t1, t1 as t2;
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ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '(select * from t1) as t1, t1 as t2' at line 1
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insert into (select * from t1) values (5);
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ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '(select * from t1) values (5)' at line 1
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drop table t1;
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create table t1 (E1 INTEGER UNSIGNED NOT NULL, E2 INTEGER UNSIGNED NOT NULL, E3 INTEGER UNSIGNED NOT NULL, PRIMARY KEY(E1)
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);
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insert into t1 VALUES(1,1,1), (2,2,1);
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select count(*) from t1 INNER JOIN (SELECT A.E1, A.E2, A.E3 FROM t1 AS A WHERE A.E3 = (SELECT MAX(B.E3) FROM t1 AS B WHERE A.E2 = B.E2)) AS themax ON t1.E1 = themax.E2 AND t1.E1 = t1.E2;
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count(*)
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2
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explain select count(*) from t1 INNER JOIN (SELECT a.E1, a.E2, a.E3 FROM t1 AS a WHERE a.E3 = (SELECT max(b.E3) FROM t1 AS b WHERE a.E2 = b.E2)) AS themax ON t1.E1 = themax.E2 AND t1.E1 = t1.E2;
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id select_type table partitions type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY a NULL ALL NULL NULL NULL NULL 2 100.00 Using where
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1 PRIMARY t1 NULL eq_ref PRIMARY PRIMARY 4 test.a.E2 1 50.00 Using where
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3 DEPENDENT SUBQUERY b NULL ALL NULL NULL NULL NULL 2 50.00 Using where
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Warnings:
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Note 1276 Field or reference 'test.a.E2' of SELECT #3 was resolved in SELECT #2
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Note 1003 /* select#1 */ select count(0) AS `count(*)` from `test`.`t1` join `test`.`t1` `a` where ((`test`.`t1`.`E1` = `test`.`a`.`E2`) and (`test`.`t1`.`E2` = `test`.`a`.`E2`) and (`test`.`a`.`E3` = (/* select#3 */ select max(`test`.`b`.`E3`) from `test`.`t1` `b` where (`test`.`a`.`E2` = `test`.`b`.`E2`))))
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drop table t1;
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create table t1 (a int);
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insert into t1 values (1),(2);
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select * from ( select * from t1 union select * from t1) a,(select * from t1 union select * from t1) b;
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a a
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1 1
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1 2
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2 1
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2 2
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explain select * from ( select * from t1 union select * from t1) a,(select * from t1 union select * from t1) b;
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id select_type table partitions type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY <derived2> NULL ALL NULL NULL NULL NULL 4 100.00 NULL
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1 PRIMARY <derived4> NULL ALL NULL NULL NULL NULL 4 100.00 Using join buffer (Block Nested Loop)
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4 DERIVED t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
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5 UNION t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
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NULL UNION RESULT <union4,5> NULL ALL NULL NULL NULL NULL NULL NULL Using temporary
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2 DERIVED t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
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3 UNION t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
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NULL UNION RESULT <union2,3> NULL ALL NULL NULL NULL NULL NULL NULL Using temporary
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Warnings:
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Note 1003 /* select#1 */ select `a`.`a` AS `a`,`b`.`a` AS `a` from (/* select#2 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` union /* select#3 */ select `test`.`t1`.`a` AS `a` from `test`.`t1`) `a` join (/* select#4 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` union /* select#5 */ select `test`.`t1`.`a` AS `a` from `test`.`t1`) `b`
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drop table t1;
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CREATE TABLE `t1` (
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`N` int(11) unsigned NOT NULL default '0',
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`M` tinyint(1) default '0'
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) ENGINE=MyISAM DEFAULT CHARSET=latin1;
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Warnings:
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Warning 1681 Integer display width is deprecated and will be removed in a future release.
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Warning 1681 Integer display width is deprecated and will be removed in a future release.
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INSERT INTO `t1` (N, M) VALUES (1, 0),(1, 0),(1, 0),(2, 0),(2, 0),(3, 0);
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UPDATE `t1` AS P1 INNER JOIN (SELECT N FROM `t1` GROUP BY N HAVING Count(M) > 1) AS P2 ON P1.N = P2.N SET P1.M = 2;
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select * from t1;
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N M
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1 2
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1 2
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1 2
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2 2
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2 2
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3 0
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UPDATE `t1` AS P1 INNER JOIN (SELECT N FROM `t1` GROUP BY N HAVING Count(M) > 1) AS P2 ON P1.N = P2.N SET P1.M = 2, P2.N = 2;
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ERROR HY000: The target table P2 of the UPDATE is not updatable
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UPDATE `t1` AS P1 INNER JOIN (SELECT aaaa FROM `t1` GROUP BY N HAVING Count(M) > 1) AS P2 ON P1.N = P2.N SET P1.M = 2;
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ERROR 42S22: Unknown column 'aaaa' in 'field list'
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delete P1.* from `t1` AS P1 INNER JOIN (SELECT N FROM `t1` GROUP BY N HAVING Count(M) > 1) AS P2 ON P1.N = P2.N;
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select * from t1;
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N M
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3 0
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delete P1.*,p2.* from `t1` AS P1 INNER JOIN (SELECT N FROM `t1` GROUP BY N HAVING Count(M) > 1) AS p2 ON P1.N = p2.N;
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ERROR HY000: The target table p2 of the DELETE is not updatable
|
|
delete P1.* from `t1` AS P1 INNER JOIN (SELECT aaa FROM `t1` GROUP BY N HAVING Count(M) > 1) AS P2 ON P1.N = P2.N;
|
|
ERROR 42S22: Unknown column 'aaa' in 'field list'
|
|
drop table t1;
|
|
CREATE TABLE t1 (
|
|
OBJECTID int(11) NOT NULL default '0',
|
|
SORTORDER int(11) NOT NULL auto_increment,
|
|
KEY t1_SortIndex (SORTORDER),
|
|
KEY t1_IdIndex (OBJECTID)
|
|
) ENGINE=MyISAM DEFAULT CHARSET=latin1;
|
|
Warnings:
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
CREATE TABLE t2 (
|
|
ID int(11) default NULL,
|
|
PARID int(11) default NULL,
|
|
UNIQUE KEY t2_ID_IDX (ID),
|
|
KEY t2_PARID_IDX (PARID)
|
|
) engine=MyISAM DEFAULT CHARSET=latin1;
|
|
Warnings:
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
INSERT INTO t2 VALUES (1000,0),(1001,0),(1002,0),(1003,0),(1008,1),(1009,1),(1010,1),(1011,1),(1016,2);
|
|
CREATE TABLE t3 (
|
|
ID int(11) default NULL,
|
|
DATA decimal(10,2) default NULL,
|
|
UNIQUE KEY t3_ID_IDX (ID)
|
|
) engine=MyISAM DEFAULT CHARSET=latin1;
|
|
Warnings:
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
INSERT INTO t3 VALUES (1000,0.00),(1001,0.25),(1002,0.50),(1003,0.75),(1008,1.00),(1009,1.25),(1010,1.50),(1011,1.75);
|
|
select 497, TMP.ID, NULL from (select 497 as ID, MAX(t3.DATA) as DATA from t1 join t2 on (t1.ObjectID = t2.ID) join t3 on (t1.ObjectID = t3.ID) group by t2.ParID order by DATA DESC) as TMP;
|
|
497 ID NULL
|
|
drop table t1, t2, t3;
|
|
CREATE TABLE t1 (name char(1) default NULL, val int(5) default NULL);
|
|
Warnings:
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
INSERT INTO t1 VALUES ('a',1), ('a',2), ('a',2), ('a',2), ('a',3), ('a',6), ('a',7), ('a',11), ('a',11), ('a',12), ('a',13), ('a',13), ('a',20), ('b',2), ('b',3), ('b',4), ('b',5);
|
|
SELECT s.name, AVG(s.val) AS median FROM (SELECT x.name, x.val FROM t1 x, t1 y WHERE x.name=y.name GROUP BY x.name, x.val HAVING SUM(y.val <= x.val) >= COUNT(*)/2 AND SUM(y.val >= x.val) >= COUNT(*)/2) AS s GROUP BY s.name;
|
|
name median
|
|
a 7.0000
|
|
b 3.5000
|
|
explain SELECT s.name, AVG(s.val) AS median FROM (SELECT x.name, x.val FROM t1 x, t1 y WHERE x.name=y.name GROUP BY x.name, x.val HAVING SUM(y.val <= x.val) >= COUNT(*)/2 AND SUM(y.val >= x.val) >= COUNT(*)/2) AS s GROUP BY s.name;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived2> NULL ALL NULL NULL NULL NULL 28 100.00 Using temporary
|
|
2 DERIVED x NULL ALL NULL NULL NULL NULL 17 100.00 Using temporary
|
|
2 DERIVED y NULL ALL NULL NULL NULL NULL 17 10.00 Using where; Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `s`.`name` AS `name`,avg(`s`.`val`) AS `median` from (/* select#2 */ select `test`.`x`.`name` AS `name`,`test`.`x`.`val` AS `val` from `test`.`t1` `x` join `test`.`t1` `y` where (`test`.`y`.`name` = `test`.`x`.`name`) group by `test`.`x`.`name`,`test`.`x`.`val` having ((sum((`test`.`y`.`val` <= `test`.`x`.`val`)) >= (count(0) / 2)) and (sum((`test`.`y`.`val` >= `test`.`x`.`val`)) >= (count(0) / 2)))) `s` group by `s`.`name`
|
|
drop table t1;
|
|
create table t2 (a int, b int, primary key (a));
|
|
insert into t2 values (1,7),(2,7);
|
|
explain select a from t2 where a>1;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t2 NULL index PRIMARY PRIMARY 4 NULL 2 100.00 Using where; Using index
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t2`.`a` AS `a` from `test`.`t2` where (`test`.`t2`.`a` > 1)
|
|
explain select a from (select a from t2 where a>1) tt;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t2 NULL index PRIMARY PRIMARY 4 NULL 2 100.00 Using where; Using index
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t2`.`a` AS `a` from `test`.`t2` where (`test`.`t2`.`a` > 1)
|
|
drop table t2;
|
|
SET sql_mode = 'NO_ENGINE_SUBSTITUTION';
|
|
CREATE TABLE `t1` ( `itemid` int(11) NOT NULL default '0', `grpid` varchar(15) NOT NULL default '', `vendor` int(11) NOT NULL default '0', `date_` date NOT NULL default '0000-00-00', `price` decimal(12,2) NOT NULL default '0.00', PRIMARY KEY (`itemid`,`grpid`,`vendor`,`date_`), KEY `itemid` (`itemid`,`vendor`), KEY `itemid_2` (`itemid`,`date_`));
|
|
Warnings:
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
insert into t1 values (128, 'rozn', 2, curdate(), 10),
|
|
(128, 'rozn', 1, curdate(), 10);
|
|
SELECT MIN(price) min, MAX(price) max, AVG(price) avg FROM (SELECT SUBSTRING( MAX(concat(date_,";",price)), 12) price FROM t1 WHERE itemid=128 AND grpid='rozn' GROUP BY itemid, grpid, vendor) lastprices;
|
|
min max avg
|
|
10.00 10.00 10
|
|
DROP TABLE t1;
|
|
SET sql_mode = default;
|
|
create table t1 (a integer, b integer);
|
|
insert into t1 values (1,4), (2,2),(2,2), (4,1),(4,1),(4,1),(4,1);
|
|
select distinct sum(b) from t1 group by a;
|
|
sum(b)
|
|
4
|
|
select distinct sum(b) from (select a,b from t1) y group by a;
|
|
sum(b)
|
|
4
|
|
drop table t1;
|
|
CREATE TABLE t1 (a char(10), b char(10));
|
|
INSERT INTO t1 VALUES ('root','localhost'), ('root','%');
|
|
SELECT * FROM (SELECT (SELECT a.a FROM t1 AS a WHERE a.a = b.a) FROM t1 AS b) AS c;
|
|
ERROR 21000: Subquery returns more than 1 row
|
|
DROP TABLE t1;
|
|
create table t1(a int);
|
|
create table t2(a int);
|
|
create table t3(a int);
|
|
insert into t1 values(1),(1);
|
|
insert into t2 values(2),(2);
|
|
insert into t3 values(3),(3);
|
|
select * from t1 union distinct select * from t2 union all select * from t3;
|
|
a
|
|
1
|
|
2
|
|
3
|
|
3
|
|
select * from (select * from t1 union distinct select * from t2 union all select * from t3) X;
|
|
a
|
|
1
|
|
2
|
|
3
|
|
3
|
|
drop table t1, t2, t3;
|
|
create table t1 (a int);
|
|
create table t2 (a int);
|
|
select * from (select * from t1,t2) foo;
|
|
ERROR 42S21: Duplicate column name 'a'
|
|
drop table t1,t2;
|
|
create table t1 (ID int unsigned not null auto_increment,
|
|
DATA varchar(5) not null, primary key (ID));
|
|
create table t2 (ID int unsigned not null auto_increment,
|
|
DATA varchar(5) not null, FID int unsigned not null,
|
|
primary key (ID));
|
|
select A.* from (t1 inner join (select * from t2) as A on t1.ID = A.FID);
|
|
ID DATA FID
|
|
select t2.* from ((select * from t1) as A inner join t2 on A.ID = t2.FID);
|
|
ID DATA FID
|
|
select t2.* from (select * from t1) as A inner join t2 on A.ID = t2.FID;
|
|
ID DATA FID
|
|
drop table t1, t2;
|
|
drop user mysqltest_1;
|
|
# End of 4.1 tests
|
|
SELECT 0 FROM
|
|
(SELECT 0) t01, (SELECT 0) t02, (SELECT 0) t03, (SELECT 0) t04, (SELECT 0) t05,
|
|
(SELECT 0) t06, (SELECT 0) t07, (SELECT 0) t08, (SELECT 0) t09, (SELECT 0) t10,
|
|
(SELECT 0) t11, (SELECT 0) t12, (SELECT 0) t13, (SELECT 0) t14, (SELECT 0) t15,
|
|
(SELECT 0) t16, (SELECT 0) t17, (SELECT 0) t18, (SELECT 0) t19, (SELECT 0) t20,
|
|
(SELECT 0) t21, (SELECT 0) t22, (SELECT 0) t23, (SELECT 0) t24, (SELECT 0) t25,
|
|
(SELECT 0) t26, (SELECT 0) t27, (SELECT 0) t28, (SELECT 0) t29, (SELECT 0) t30,
|
|
(SELECT 0) t31, (SELECT 0) t32, (SELECT 0) t33, (SELECT 0) t34, (SELECT 0) t35,
|
|
(SELECT 0) t36, (SELECT 0) t37, (SELECT 0) t38, (SELECT 0) t39, (SELECT 0) t40,
|
|
(SELECT 0) t41, (SELECT 0) t42, (SELECT 0) t43, (SELECT 0) t44, (SELECT 0) t45,
|
|
(SELECT 0) t46, (SELECT 0) t47, (SELECT 0) t48, (SELECT 0) t49, (SELECT 0) t50,
|
|
(SELECT 0) t51, (SELECT 0) t52, (SELECT 0) t53, (SELECT 0) t54, (SELECT 0) t55,
|
|
(SELECT 0) t56, (SELECT 0) t57, (SELECT 0) t58, (SELECT 0) t59, (SELECT 0) t60,
|
|
(SELECT 0) t61;
|
|
0
|
|
0
|
|
#
|
|
# A nested materialized derived table is used before being populated.
|
|
# (addon for bug#19077)
|
|
#
|
|
CREATE TABLE t1 (i INT, j BIGINT);
|
|
INSERT INTO t1 VALUES (1, 2), (2, 2), (3, 2);
|
|
SELECT * FROM (SELECT MIN(i) FROM t1
|
|
WHERE j = SUBSTRING('12', (SELECT * FROM (SELECT MIN(j) FROM t1) t2))) t3;
|
|
MIN(i)
|
|
1
|
|
DROP TABLE t1;
|
|
# End of 5.0 tests
|
|
#
|
|
# Bug#55586: Crash JOIN of two subqueries in FROM + ORDER BY and GROUP BY
|
|
#
|
|
CREATE TABLE C (
|
|
`col_int_key` int(11) DEFAULT NULL,
|
|
`col_varchar_key` varchar(1) DEFAULT NULL,
|
|
`col_varchar_nokey` varchar(1) DEFAULT NULL,
|
|
KEY `col_varchar_key` (`col_varchar_key`,`col_int_key`)
|
|
);
|
|
Warnings:
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
INSERT INTO C VALUES (2,'w','w');
|
|
INSERT INTO C VALUES (2,'d','d');
|
|
SELECT SUM(DISTINCT table2.col_int_key) field1,
|
|
table1.col_varchar_key field2
|
|
FROM
|
|
(SELECT * FROM C ) table1
|
|
JOIN (SELECT * FROM C ) table2
|
|
ON table2 .`col_varchar_key` = table1 .`col_varchar_nokey`
|
|
GROUP BY field2
|
|
ORDER BY field1;
|
|
field1 field2
|
|
2 d
|
|
2 w
|
|
DROP TABLE C;
|
|
# End of test for bug#55586
|
|
#
|
|
# Bug#55561: Crash on JOIN with 2 FROM subqueries
|
|
#
|
|
CREATE TABLE C (
|
|
col_int int DEFAULT NULL,
|
|
col_varchar varchar(1) DEFAULT NULL
|
|
);
|
|
INSERT INTO `C` VALUES (0,NULL);
|
|
INSERT INTO `C` VALUES (5,'y');
|
|
SELECT table1.col_varchar
|
|
FROM
|
|
( SELECT * FROM C ) table1
|
|
JOIN ( SELECT * FROM C ) table2 ON table2.col_varchar = table1.col_varchar
|
|
WHERE
|
|
table2.col_varchar < table2.col_varchar
|
|
AND table1.col_varchar != 'k'
|
|
LIMIT 1;
|
|
col_varchar
|
|
DROP TABLE C;
|
|
# End on bug#55561
|
|
#
|
|
# Bug#56233: Hang during key generation for derived tables
|
|
#
|
|
CREATE TABLE C (
|
|
col_varchar_10_key varchar(10) DEFAULT NULL,
|
|
col_int_key int DEFAULT NULL,
|
|
pk int NOT NULL AUTO_INCREMENT,
|
|
col_date_key date DEFAULT NULL,
|
|
PRIMARY KEY (`pk`),
|
|
KEY `col_varchar_10_key` (`col_varchar_10_key`),
|
|
KEY `col_int_key` (`col_int_key`),
|
|
KEY `col_date_key` (`col_date_key`)
|
|
);
|
|
INSERT INTO C VALUES ('ok',3,1,'2003-04-02');
|
|
CREATE ALGORITHM=TEMPTABLE VIEW viewC AS SELECT * FROM C;
|
|
SELECT table1.col_date_key AS field1
|
|
FROM
|
|
C AS table1
|
|
WHERE
|
|
(table1.col_int_key <=ANY
|
|
( SELECT SUBQUERY1_t1.col_int_key
|
|
FROM viewC AS SUBQUERY1_t1
|
|
WHERE SUBQUERY1_t1.col_varchar_10_key <= table1.col_varchar_10_key
|
|
)
|
|
)
|
|
;
|
|
field1
|
|
2003-04-02
|
|
DROP TABLE C;
|
|
DROP VIEW viewC;
|
|
#
|
|
#
|
|
# Bug#55950: FROM Subquery joined by 2 varchar fields returns empty
|
|
# set
|
|
#
|
|
CREATE TABLE `cc` (
|
|
`i1` varchar(1) DEFAULT NULL,
|
|
`i2` varchar(1) DEFAULT NULL
|
|
) charset utf8mb4;
|
|
INSERT INTO `cc` VALUES ('m','m');
|
|
INSERT INTO `cc` VALUES ('c','c');
|
|
CREATE TABLE `C` (
|
|
`o1` varchar(1) DEFAULT NULL
|
|
) charset utf8mb4;
|
|
INSERT INTO `C` VALUES ('m');
|
|
SELECT table1 . o1
|
|
FROM C table1
|
|
JOIN ( C table2
|
|
JOIN ( SELECT * FROM cc ) table3
|
|
ON table3 .`i1` = table2 .o1
|
|
) ON table3 .`i2` = table2 .o1
|
|
;
|
|
o1
|
|
m
|
|
SET @optimizer_switch_saved= @@optimizer_switch;
|
|
SET @@optimizer_switch="derived_merge=off";
|
|
# Ref access to the derived table should be used.
|
|
EXPLAIN SELECT table1 . o1
|
|
FROM C table1
|
|
JOIN ( C table2
|
|
JOIN ( SELECT * FROM cc ) table3
|
|
ON table3 .`i1` = table2 .o1
|
|
) ON table3 .`i2` = table2 .o1
|
|
;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY table1 NULL system NULL NULL NULL NULL 1 100.00 NULL
|
|
1 PRIMARY table2 NULL system NULL NULL NULL NULL 1 100.00 NULL
|
|
1 PRIMARY <derived2> NULL ref <auto_key0> <auto_key0> 14 const,const 1 100.00 Using index
|
|
2 DERIVED cc NULL ALL NULL NULL NULL NULL 2 100.00 NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select 'm' AS `o1` from (/* select#2 */ select `test`.`cc`.`i1` AS `i1`,`test`.`cc`.`i2` AS `i2` from `test`.`cc`) `table3` where ((`table3`.`i2` = 'm') and (`table3`.`i1` = 'm'))
|
|
EXPLAIN FORMAT=tree SELECT table1 . o1
|
|
FROM C table1
|
|
JOIN ( C table2
|
|
JOIN ( SELECT * FROM cc ) table3
|
|
ON table3 .`i1` = table2 .o1
|
|
) ON table3 .`i2` = table2 .o1
|
|
;
|
|
EXPLAIN
|
|
-> Index lookup on table3 using <auto_key0> (i1='m', i2='m')
|
|
-> Materialize
|
|
-> Table scan on cc (cost=0.70 rows=2)
|
|
|
|
SET @@optimizer_switch=@optimizer_switch_saved;
|
|
DROP TABLE cc;
|
|
DROP TABLE C;
|
|
# End of test for bug#55950
|
|
#
|
|
# Bug#56592: Subquery with DISTINCT in FROM clause returns only partial
|
|
# result
|
|
#
|
|
CREATE TABLE `t1` (
|
|
`pk` int(11) NOT NULL,
|
|
`col_int_key` int(11) DEFAULT NULL,
|
|
`col_datetime_key` datetime DEFAULT NULL
|
|
) ENGINE=MyISAM;
|
|
Warnings:
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
INSERT INTO t1 VALUES (2, 9, NULL), (3, 3, '1900-01-01 00:00:00'),
|
|
(8, 8, '1900-01-01 00:00:00'), (15, 0, '2007-12-15 12:39:34');
|
|
SELECT * FROM (
|
|
SELECT DISTINCT tableb.col_datetime_key
|
|
FROM t1 tablea LEFT JOIN t1 tableb ON tablea.pk < tableb.col_int_key
|
|
) AS from_subquery;
|
|
col_datetime_key
|
|
NULL
|
|
1900-01-01 00:00:00
|
|
EXPLAIN SELECT * FROM (
|
|
SELECT DISTINCT tableb.col_datetime_key
|
|
FROM t1 tablea LEFT JOIN t1 tableb ON tablea.pk < tableb.col_int_key
|
|
) AS from_subquery;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived2> NULL ALL NULL NULL NULL NULL 16 100.00 NULL
|
|
2 DERIVED tablea NULL ALL NULL NULL NULL NULL 4 100.00 Using temporary
|
|
2 DERIVED tableb NULL ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `from_subquery`.`col_datetime_key` AS `col_datetime_key` from (/* select#2 */ select distinct `test`.`tableb`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` `tablea` left join `test`.`t1` `tableb` on((`test`.`tablea`.`pk` < `test`.`tableb`.`col_int_key`)) where true) `from_subquery`
|
|
EXPLAIN SELECT * FROM (
|
|
SELECT DISTINCT tablea.col_datetime_key
|
|
FROM t1 tablea LEFT JOIN t1 tableb ON tablea.pk < tableb.col_int_key
|
|
) AS from_subquery;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived2> NULL ALL NULL NULL NULL NULL 16 100.00 NULL
|
|
2 DERIVED tablea NULL ALL NULL NULL NULL NULL 4 100.00 Using temporary
|
|
2 DERIVED tableb NULL ALL NULL NULL NULL NULL 4 100.00 Using where; Distinct; Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `from_subquery`.`col_datetime_key` AS `col_datetime_key` from (/* select#2 */ select distinct `test`.`tablea`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` `tablea` left join `test`.`t1` `tableb` on((`test`.`tablea`.`pk` < `test`.`tableb`.`col_int_key`)) where true) `from_subquery`
|
|
DROP TABLE t1;
|
|
#
|
|
# Bug#58730 Assertion failed: table->key_read == 0 in close_thread_table,
|
|
# temptable views
|
|
#
|
|
CREATE TABLE t1 (a INT);
|
|
CREATE TABLE t2 (b INT, KEY (b));
|
|
INSERT INTO t1 VALUES (1),(1);
|
|
INSERT INTO t2 VALUES (1),(1);
|
|
CREATE algorithm=temptable VIEW v1 AS
|
|
SELECT 1 FROM t1 LEFT JOIN t1 t3 ON 1 > (SELECT 1 FROM t1);
|
|
CREATE algorithm=temptable VIEW v2 AS SELECT 1 FROM t2;
|
|
EXPLAIN SELECT 1 FROM t1 JOIN v1 ON 1 > (SELECT 1 FROM v2);
|
|
ERROR 21000: Subquery returns more than 1 row
|
|
DROP TABLE t1, t2;
|
|
DROP VIEW v1, v2;
|
|
#
|
|
# WL#5274: Postpone materialization of views/subqueries in FROM clause.
|
|
# Additional tests.
|
|
#
|
|
CREATE TABLE t1(f1 int, f11 int);
|
|
CREATE TABLE t2(f2 int, f22 int);
|
|
INSERT INTO t1 VALUES(1,1),(2,2),(3,3),(5,5),(9,9),(7,7);
|
|
INSERT INTO t2 VALUES(1,1),(3,3),(2,2),(4,4),(8,8),(6,6);
|
|
for merged derived tables
|
|
explain for simple derived
|
|
EXPLAIN SELECT * FROM (SELECT * FROM t1) tt;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 6 100.00 NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11` from `test`.`t1`
|
|
SELECT * FROM (SELECT * FROM t1) tt;
|
|
f1 f11
|
|
1 1
|
|
2 2
|
|
3 3
|
|
5 5
|
|
9 9
|
|
7 7
|
|
explain for multitable derived
|
|
EXPLAIN SELECT * FROM (SELECT * FROM t1 JOIN t2 ON f1=f2) tt;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 6 100.00 NULL
|
|
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 6 16.67 Using where; Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11`,`test`.`t2`.`f2` AS `f2`,`test`.`t2`.`f22` AS `f22` from `test`.`t1` join `test`.`t2` where (`test`.`t2`.`f2` = `test`.`t1`.`f1`)
|
|
SELECT * FROM (SELECT * FROM t1 JOIN t2 ON f1=f2) tt;
|
|
f1 f11 f2 f22
|
|
1 1 1 1
|
|
2 2 2 2
|
|
3 3 3 3
|
|
explain for derived with where
|
|
FLUSH STATUS;
|
|
EXPLAIN
|
|
SELECT * FROM (SELECT * FROM t1 WHERE f1 IN (2,3)) tt WHERE f11=2;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 6 16.67 Using where
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11` from `test`.`t1` where ((`test`.`t1`.`f11` = 2) and (`test`.`t1`.`f1` in (2,3)))
|
|
SHOW STATUS LIKE 'Handler_read%';
|
|
Variable_name Value
|
|
Handler_read_first 0
|
|
Handler_read_key 0
|
|
Handler_read_last 0
|
|
Handler_read_next 0
|
|
Handler_read_prev 0
|
|
Handler_read_rnd 0
|
|
Handler_read_rnd_next 0
|
|
FLUSH STATUS;
|
|
SELECT * FROM (SELECT * FROM t1 WHERE f1 IN (2,3)) tt WHERE f11=2;
|
|
f1 f11
|
|
2 2
|
|
SHOW STATUS LIKE 'Handler_read%';
|
|
Variable_name Value
|
|
Handler_read_first 0
|
|
Handler_read_key 0
|
|
Handler_read_last 0
|
|
Handler_read_next 0
|
|
Handler_read_prev 0
|
|
Handler_read_rnd 0
|
|
Handler_read_rnd_next 7
|
|
join of derived
|
|
EXPLAIN
|
|
SELECT * FROM (SELECT * FROM t1 WHERE f1 IN (2,3)) tt JOIN
|
|
(SELECT * FROM t1 WHERE f1 IN (1,2)) aa ON tt.f1=aa.f1;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 6 33.33 Using where
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 6 16.67 Using where; Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11`,`test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11` from `test`.`t1` join `test`.`t1` where ((`test`.`t1`.`f1` = `test`.`t1`.`f1`) and (`test`.`t1`.`f1` in (1,2)) and (`test`.`t1`.`f1` in (2,3)))
|
|
SELECT * FROM (SELECT * FROM t1 WHERE f1 IN (2,3)) tt JOIN
|
|
(SELECT * FROM t1 WHERE f1 IN (1,2)) aa ON tt.f1=aa.f1;
|
|
f1 f11 f1 f11
|
|
2 2 2 2
|
|
for merged views
|
|
CREATE VIEW v1 AS SELECT * FROM t1;
|
|
CREATE VIEW v2 AS SELECT * FROM t1 JOIN t2 ON f1=f2;
|
|
CREATE VIEW v3 AS SELECT * FROM t1 WHERE f1 IN (2,3);
|
|
CREATE VIEW v4 AS SELECT * FROM t2 WHERE f2 IN (2,3);
|
|
explain for simple views
|
|
EXPLAIN SELECT * FROM v1;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 6 100.00 NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11` from `test`.`t1`
|
|
SELECT * FROM v1;
|
|
f1 f11
|
|
1 1
|
|
2 2
|
|
3 3
|
|
5 5
|
|
9 9
|
|
7 7
|
|
explain for multitable views
|
|
EXPLAIN SELECT * FROM v2;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 6 100.00 NULL
|
|
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 6 16.67 Using where; Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11`,`test`.`t2`.`f2` AS `f2`,`test`.`t2`.`f22` AS `f22` from `test`.`t1` join `test`.`t2` where (`test`.`t2`.`f2` = `test`.`t1`.`f1`)
|
|
SELECT * FROM v2;
|
|
f1 f11 f2 f22
|
|
1 1 1 1
|
|
2 2 2 2
|
|
3 3 3 3
|
|
explain for views with where
|
|
EXPLAIN SELECT * FROM v3 WHERE f11 IN (1,3);
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 6 16.67 Using where
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11` from `test`.`t1` where ((`test`.`t1`.`f11` in (1,3)) and (`test`.`t1`.`f1` in (2,3)))
|
|
SELECT * FROM v3 WHERE f11 IN (1,3);
|
|
f1 f11
|
|
3 3
|
|
explain for joined views
|
|
EXPLAIN
|
|
SELECT * FROM v3 JOIN v4 ON f1=f2;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 6 33.33 Using where
|
|
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 6 16.67 Using where; Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11`,`test`.`t2`.`f2` AS `f2`,`test`.`t2`.`f22` AS `f22` from `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`f2` = `test`.`t1`.`f1`) and (`test`.`t1`.`f1` in (2,3)) and (`test`.`t1`.`f1` in (2,3)))
|
|
SELECT * FROM v3 JOIN v4 ON f1=f2;
|
|
f1 f11 f2 f22
|
|
2 2 2 2
|
|
3 3 3 3
|
|
FLUSH STATUS;
|
|
EXPLAIN SELECT * FROM v4 WHERE f2 IN (1,3);
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 6 16.67 Using where
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t2`.`f2` AS `f2`,`test`.`t2`.`f22` AS `f22` from `test`.`t2` where ((`test`.`t2`.`f2` in (1,3)) and (`test`.`t2`.`f2` in (2,3)))
|
|
SHOW STATUS LIKE 'Handler_read%';
|
|
Variable_name Value
|
|
Handler_read_first 0
|
|
Handler_read_key 0
|
|
Handler_read_last 0
|
|
Handler_read_next 0
|
|
Handler_read_prev 0
|
|
Handler_read_rnd 0
|
|
Handler_read_rnd_next 0
|
|
FLUSH STATUS;
|
|
SELECT * FROM v4 WHERE f2 IN (1,3);
|
|
f2 f22
|
|
3 3
|
|
SHOW STATUS LIKE 'Handler_read%';
|
|
Variable_name Value
|
|
Handler_read_first 0
|
|
Handler_read_key 0
|
|
Handler_read_last 0
|
|
Handler_read_next 0
|
|
Handler_read_prev 0
|
|
Handler_read_rnd 0
|
|
Handler_read_rnd_next 7
|
|
for materialized derived tables
|
|
explain for simple derived
|
|
EXPLAIN SELECT * FROM (SELECT * FROM t1 GROUP BY f1) tt;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived2> NULL ALL NULL NULL NULL NULL 6 100.00 NULL
|
|
2 DERIVED t1 NULL ALL NULL NULL NULL NULL 6 100.00 Using temporary
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `tt`.`f1` AS `f1`,`tt`.`f11` AS `f11` from (/* select#2 */ select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11` from `test`.`t1` group by `test`.`t1`.`f1`) `tt`
|
|
SELECT * FROM (SELECT * FROM t1 HAVING f1=f1) tt;
|
|
f1 f11
|
|
1 1
|
|
2 2
|
|
3 3
|
|
5 5
|
|
9 9
|
|
7 7
|
|
explain showing created indexes and late materialization
|
|
FLUSH STATUS;
|
|
EXPLAIN
|
|
SELECT * FROM t1 JOIN (SELECT * FROM t2 GROUP BY f2) tt ON f1=f2;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 6 100.00 Using where
|
|
1 PRIMARY <derived2> NULL ref <auto_key0> <auto_key0> 5 test.t1.f1 2 100.00 NULL
|
|
2 DERIVED t2 NULL ALL NULL NULL NULL NULL 6 100.00 Using temporary
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11`,`tt`.`f2` AS `f2`,`tt`.`f22` AS `f22` from `test`.`t1` join (/* select#2 */ select `test`.`t2`.`f2` AS `f2`,`test`.`t2`.`f22` AS `f22` from `test`.`t2` group by `test`.`t2`.`f2`) `tt` where (`tt`.`f2` = `test`.`t1`.`f1`)
|
|
SHOW STATUS LIKE 'Handler_read%';
|
|
Variable_name Value
|
|
Handler_read_first 0
|
|
Handler_read_key 0
|
|
Handler_read_last 0
|
|
Handler_read_next 0
|
|
Handler_read_prev 0
|
|
Handler_read_rnd 0
|
|
Handler_read_rnd_next 0
|
|
FLUSH STATUS;
|
|
SELECT * FROM t1 JOIN (SELECT * FROM t2 GROUP BY f2) tt ON f1=f2;
|
|
f1 f11 f2 f22
|
|
1 1 1 1
|
|
2 2 2 2
|
|
3 3 3 3
|
|
SHOW STATUS LIKE 'Handler_read%';
|
|
Variable_name Value
|
|
Handler_read_first 0
|
|
Handler_read_key 6
|
|
Handler_read_last 0
|
|
Handler_read_next 3
|
|
Handler_read_prev 0
|
|
Handler_read_rnd 0
|
|
Handler_read_rnd_next 21
|
|
for materialized views
|
|
DROP VIEW v1,v2,v3;
|
|
CREATE VIEW v1 AS SELECT * FROM t1 GROUP BY f1;
|
|
CREATE VIEW v2 AS SELECT * FROM t2 GROUP BY f2;
|
|
CREATE VIEW v3 AS SELECT t1.f1,t1.f11 FROM t1 JOIN t1 AS t11 HAVING t1.f1<100;
|
|
ensure that view definitions are cached in the data-dictionary cache.
|
|
explain for simple derived
|
|
EXPLAIN SELECT * FROM v1;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived2> NULL ALL NULL NULL NULL NULL 6 100.00 NULL
|
|
2 DERIVED t1 NULL ALL NULL NULL NULL NULL 6 100.00 Using temporary
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `v1`.`f1` AS `f1`,`v1`.`f11` AS `f11` from `test`.`v1`
|
|
SELECT * FROM v1;
|
|
f1 f11
|
|
1 1
|
|
2 2
|
|
3 3
|
|
5 5
|
|
9 9
|
|
7 7
|
|
explain showing created indexes and late materialization for views
|
|
FLUSH STATUS;
|
|
EXPLAIN SELECT * FROM t1 JOIN v2 ON f1=f2;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 6 100.00 Using where
|
|
1 PRIMARY <derived2> NULL ref <auto_key0> <auto_key0> 5 test.t1.f1 2 100.00 NULL
|
|
2 DERIVED t2 NULL ALL NULL NULL NULL NULL 6 100.00 Using temporary
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11`,`v2`.`f2` AS `f2`,`v2`.`f22` AS `f22` from `test`.`t1` join `test`.`v2` where (`v2`.`f2` = `test`.`t1`.`f1`)
|
|
SHOW STATUS LIKE 'Handler_read%';
|
|
Variable_name Value
|
|
Handler_read_first 0
|
|
Handler_read_key 0
|
|
Handler_read_last 0
|
|
Handler_read_next 0
|
|
Handler_read_prev 0
|
|
Handler_read_rnd 0
|
|
Handler_read_rnd_next 0
|
|
FLUSH STATUS;
|
|
SELECT * FROM t1 JOIN v2 ON f1=f2;
|
|
f1 f11 f2 f22
|
|
1 1 1 1
|
|
2 2 2 2
|
|
3 3 3 3
|
|
SHOW STATUS LIKE 'Handler_read%';
|
|
Variable_name Value
|
|
Handler_read_first 0
|
|
Handler_read_key 6
|
|
Handler_read_last 0
|
|
Handler_read_next 3
|
|
Handler_read_prev 0
|
|
Handler_read_rnd 0
|
|
Handler_read_rnd_next 21
|
|
EXPLAIN
|
|
SELECT * FROM t1,v3 AS v31,v3 WHERE t1.f1=v31.f1 and t1.f1=v3.f1;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 6 100.00 Using where
|
|
1 PRIMARY <derived2> NULL ref <auto_key0> <auto_key0> 5 test.t1.f1 3 100.00 NULL
|
|
1 PRIMARY <derived3> NULL ref <auto_key0> <auto_key0> 5 test.t1.f1 3 100.00 NULL
|
|
3 DERIVED t1 NULL ALL NULL NULL NULL NULL 6 100.00 NULL
|
|
3 DERIVED t11 NULL ALL NULL NULL NULL NULL 6 100.00 Using join buffer (Block Nested Loop)
|
|
2 DERIVED t1 NULL ALL NULL NULL NULL NULL 6 100.00 NULL
|
|
2 DERIVED t11 NULL ALL NULL NULL NULL NULL 6 100.00 Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11`,`v31`.`f1` AS `f1`,`v31`.`f11` AS `f11`,`v3`.`f1` AS `f1`,`v3`.`f11` AS `f11` from `test`.`t1` join `test`.`v3` `v31` join `test`.`v3` where ((`v31`.`f1` = `test`.`t1`.`f1`) and (`v3`.`f1` = `test`.`t1`.`f1`))
|
|
FLUSH STATUS;
|
|
SELECT * FROM t1,v3 AS v31,v3 WHERE t1.f1=v31.f1 and t1.f1=v3.f1;
|
|
f1 f11 f1 f11 f1 f11
|
|
1 1 1 1 1 1
|
|
1 1 1 1 1 1
|
|
1 1 1 1 1 1
|
|
1 1 1 1 1 1
|
|
1 1 1 1 1 1
|
|
1 1 1 1 1 1
|
|
1 1 1 1 1 1
|
|
1 1 1 1 1 1
|
|
1 1 1 1 1 1
|
|
1 1 1 1 1 1
|
|
1 1 1 1 1 1
|
|
1 1 1 1 1 1
|
|
1 1 1 1 1 1
|
|
1 1 1 1 1 1
|
|
1 1 1 1 1 1
|
|
1 1 1 1 1 1
|
|
1 1 1 1 1 1
|
|
1 1 1 1 1 1
|
|
1 1 1 1 1 1
|
|
1 1 1 1 1 1
|
|
1 1 1 1 1 1
|
|
1 1 1 1 1 1
|
|
1 1 1 1 1 1
|
|
1 1 1 1 1 1
|
|
1 1 1 1 1 1
|
|
1 1 1 1 1 1
|
|
1 1 1 1 1 1
|
|
1 1 1 1 1 1
|
|
1 1 1 1 1 1
|
|
1 1 1 1 1 1
|
|
1 1 1 1 1 1
|
|
1 1 1 1 1 1
|
|
1 1 1 1 1 1
|
|
1 1 1 1 1 1
|
|
1 1 1 1 1 1
|
|
1 1 1 1 1 1
|
|
2 2 2 2 2 2
|
|
2 2 2 2 2 2
|
|
2 2 2 2 2 2
|
|
2 2 2 2 2 2
|
|
2 2 2 2 2 2
|
|
2 2 2 2 2 2
|
|
2 2 2 2 2 2
|
|
2 2 2 2 2 2
|
|
2 2 2 2 2 2
|
|
2 2 2 2 2 2
|
|
2 2 2 2 2 2
|
|
2 2 2 2 2 2
|
|
2 2 2 2 2 2
|
|
2 2 2 2 2 2
|
|
2 2 2 2 2 2
|
|
2 2 2 2 2 2
|
|
2 2 2 2 2 2
|
|
2 2 2 2 2 2
|
|
2 2 2 2 2 2
|
|
2 2 2 2 2 2
|
|
2 2 2 2 2 2
|
|
2 2 2 2 2 2
|
|
2 2 2 2 2 2
|
|
2 2 2 2 2 2
|
|
2 2 2 2 2 2
|
|
2 2 2 2 2 2
|
|
2 2 2 2 2 2
|
|
2 2 2 2 2 2
|
|
2 2 2 2 2 2
|
|
2 2 2 2 2 2
|
|
2 2 2 2 2 2
|
|
2 2 2 2 2 2
|
|
2 2 2 2 2 2
|
|
2 2 2 2 2 2
|
|
2 2 2 2 2 2
|
|
2 2 2 2 2 2
|
|
3 3 3 3 3 3
|
|
3 3 3 3 3 3
|
|
3 3 3 3 3 3
|
|
3 3 3 3 3 3
|
|
3 3 3 3 3 3
|
|
3 3 3 3 3 3
|
|
3 3 3 3 3 3
|
|
3 3 3 3 3 3
|
|
3 3 3 3 3 3
|
|
3 3 3 3 3 3
|
|
3 3 3 3 3 3
|
|
3 3 3 3 3 3
|
|
3 3 3 3 3 3
|
|
3 3 3 3 3 3
|
|
3 3 3 3 3 3
|
|
3 3 3 3 3 3
|
|
3 3 3 3 3 3
|
|
3 3 3 3 3 3
|
|
3 3 3 3 3 3
|
|
3 3 3 3 3 3
|
|
3 3 3 3 3 3
|
|
3 3 3 3 3 3
|
|
3 3 3 3 3 3
|
|
3 3 3 3 3 3
|
|
3 3 3 3 3 3
|
|
3 3 3 3 3 3
|
|
3 3 3 3 3 3
|
|
3 3 3 3 3 3
|
|
3 3 3 3 3 3
|
|
3 3 3 3 3 3
|
|
3 3 3 3 3 3
|
|
3 3 3 3 3 3
|
|
3 3 3 3 3 3
|
|
3 3 3 3 3 3
|
|
3 3 3 3 3 3
|
|
3 3 3 3 3 3
|
|
5 5 5 5 5 5
|
|
5 5 5 5 5 5
|
|
5 5 5 5 5 5
|
|
5 5 5 5 5 5
|
|
5 5 5 5 5 5
|
|
5 5 5 5 5 5
|
|
5 5 5 5 5 5
|
|
5 5 5 5 5 5
|
|
5 5 5 5 5 5
|
|
5 5 5 5 5 5
|
|
5 5 5 5 5 5
|
|
5 5 5 5 5 5
|
|
5 5 5 5 5 5
|
|
5 5 5 5 5 5
|
|
5 5 5 5 5 5
|
|
5 5 5 5 5 5
|
|
5 5 5 5 5 5
|
|
5 5 5 5 5 5
|
|
5 5 5 5 5 5
|
|
5 5 5 5 5 5
|
|
5 5 5 5 5 5
|
|
5 5 5 5 5 5
|
|
5 5 5 5 5 5
|
|
5 5 5 5 5 5
|
|
5 5 5 5 5 5
|
|
5 5 5 5 5 5
|
|
5 5 5 5 5 5
|
|
5 5 5 5 5 5
|
|
5 5 5 5 5 5
|
|
5 5 5 5 5 5
|
|
5 5 5 5 5 5
|
|
5 5 5 5 5 5
|
|
5 5 5 5 5 5
|
|
5 5 5 5 5 5
|
|
5 5 5 5 5 5
|
|
5 5 5 5 5 5
|
|
9 9 9 9 9 9
|
|
9 9 9 9 9 9
|
|
9 9 9 9 9 9
|
|
9 9 9 9 9 9
|
|
9 9 9 9 9 9
|
|
9 9 9 9 9 9
|
|
9 9 9 9 9 9
|
|
9 9 9 9 9 9
|
|
9 9 9 9 9 9
|
|
9 9 9 9 9 9
|
|
9 9 9 9 9 9
|
|
9 9 9 9 9 9
|
|
9 9 9 9 9 9
|
|
9 9 9 9 9 9
|
|
9 9 9 9 9 9
|
|
9 9 9 9 9 9
|
|
9 9 9 9 9 9
|
|
9 9 9 9 9 9
|
|
9 9 9 9 9 9
|
|
9 9 9 9 9 9
|
|
9 9 9 9 9 9
|
|
9 9 9 9 9 9
|
|
9 9 9 9 9 9
|
|
9 9 9 9 9 9
|
|
9 9 9 9 9 9
|
|
9 9 9 9 9 9
|
|
9 9 9 9 9 9
|
|
9 9 9 9 9 9
|
|
9 9 9 9 9 9
|
|
9 9 9 9 9 9
|
|
9 9 9 9 9 9
|
|
9 9 9 9 9 9
|
|
9 9 9 9 9 9
|
|
9 9 9 9 9 9
|
|
9 9 9 9 9 9
|
|
9 9 9 9 9 9
|
|
7 7 7 7 7 7
|
|
7 7 7 7 7 7
|
|
7 7 7 7 7 7
|
|
7 7 7 7 7 7
|
|
7 7 7 7 7 7
|
|
7 7 7 7 7 7
|
|
7 7 7 7 7 7
|
|
7 7 7 7 7 7
|
|
7 7 7 7 7 7
|
|
7 7 7 7 7 7
|
|
7 7 7 7 7 7
|
|
7 7 7 7 7 7
|
|
7 7 7 7 7 7
|
|
7 7 7 7 7 7
|
|
7 7 7 7 7 7
|
|
7 7 7 7 7 7
|
|
7 7 7 7 7 7
|
|
7 7 7 7 7 7
|
|
7 7 7 7 7 7
|
|
7 7 7 7 7 7
|
|
7 7 7 7 7 7
|
|
7 7 7 7 7 7
|
|
7 7 7 7 7 7
|
|
7 7 7 7 7 7
|
|
7 7 7 7 7 7
|
|
7 7 7 7 7 7
|
|
7 7 7 7 7 7
|
|
7 7 7 7 7 7
|
|
7 7 7 7 7 7
|
|
7 7 7 7 7 7
|
|
7 7 7 7 7 7
|
|
7 7 7 7 7 7
|
|
7 7 7 7 7 7
|
|
7 7 7 7 7 7
|
|
7 7 7 7 7 7
|
|
7 7 7 7 7 7
|
|
SHOW STATUS LIKE 'Handler_read%';
|
|
Variable_name Value
|
|
Handler_read_first 0
|
|
Handler_read_key 42
|
|
Handler_read_last 0
|
|
Handler_read_next 252
|
|
Handler_read_prev 0
|
|
Handler_read_rnd 0
|
|
Handler_read_rnd_next 35
|
|
explain showing late materialization for views
|
|
EXPLAIN SELECT * FROM v1 JOIN v4 ON f1=f2;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t2 NULL ALL NULL NULL NULL NULL 6 33.33 Using where
|
|
1 PRIMARY <derived2> NULL ref <auto_key0> <auto_key0> 5 test.t2.f2 2 100.00 NULL
|
|
2 DERIVED t1 NULL ALL NULL NULL NULL NULL 6 100.00 Using temporary
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `v1`.`f1` AS `f1`,`v1`.`f11` AS `f11`,`test`.`t2`.`f2` AS `f2`,`test`.`t2`.`f22` AS `f22` from `test`.`v1` join `test`.`t2` where ((`v1`.`f1` = `test`.`t2`.`f2`) and (`test`.`t2`.`f2` in (2,3)))
|
|
SELECT * FROM v1 JOIN v4 ON f1=f2;
|
|
f1 f11 f2 f22
|
|
3 3 3 3
|
|
2 2 2 2
|
|
merged derived in merged derived
|
|
EXPLAIN SELECT * FROM (SELECT * FROM
|
|
(SELECT * FROM t1 WHERE f1 < 7) tt WHERE f1 > 2) zz;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 6 16.67 Using where
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11` from `test`.`t1` where ((`test`.`t1`.`f1` > 2) and (`test`.`t1`.`f1` < 7))
|
|
SELECT * FROM (SELECT * FROM
|
|
(SELECT * FROM t1 WHERE f1 < 7) tt WHERE f1 > 2) zz;
|
|
f1 f11
|
|
3 3
|
|
5 5
|
|
materialized derived in merged derived
|
|
EXPLAIN SELECT * FROM (SELECT * FROM
|
|
(SELECT * FROM t1 WHERE f1 < 7 GROUP BY f1) tt WHERE f1 > 2) zz;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived3> NULL ALL NULL NULL NULL NULL 2 50.00 Using where
|
|
3 DERIVED t1 NULL ALL NULL NULL NULL NULL 6 33.33 Using where; Using temporary
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `tt`.`f1` AS `f1`,`tt`.`f11` AS `f11` from (/* select#3 */ select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11` from `test`.`t1` where (`test`.`t1`.`f1` < 7) group by `test`.`t1`.`f1`) `tt` where (`tt`.`f1` > 2)
|
|
SELECT * FROM (SELECT * FROM
|
|
(SELECT * FROM t1 WHERE f1 < 7 GROUP BY f1) tt WHERE f1 > 2) zz;
|
|
f1 f11
|
|
3 3
|
|
5 5
|
|
merged derived in materialized derived
|
|
EXPLAIN SELECT * FROM (SELECT * FROM
|
|
(SELECT * FROM t1 WHERE f1 < 7) tt WHERE f1 > 2 GROUP BY f1) zz;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived2> NULL ALL NULL NULL NULL NULL 2 100.00 NULL
|
|
2 DERIVED t1 NULL ALL NULL NULL NULL NULL 6 16.67 Using where; Using temporary
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `zz`.`f1` AS `f1`,`zz`.`f11` AS `f11` from (/* select#2 */ select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11` from `test`.`t1` where ((`test`.`t1`.`f1` > 2) and (`test`.`t1`.`f1` < 7)) group by `test`.`t1`.`f1`) `zz`
|
|
SELECT * FROM (SELECT * FROM
|
|
(SELECT * FROM t1 WHERE f1 < 7) tt WHERE f1 > 2 GROUP BY f1) zz;
|
|
f1 f11
|
|
3 3
|
|
5 5
|
|
materialized derived in materialized derived
|
|
EXPLAIN SELECT * FROM (SELECT * FROM
|
|
(SELECT * FROM t1 WHERE f1 < 7 GROUP BY f1) tt WHERE f1 > 2 GROUP BY f1) zz;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived2> NULL ALL NULL NULL NULL NULL 2 100.00 NULL
|
|
2 DERIVED <derived3> NULL ALL NULL NULL NULL NULL 2 50.00 Using where; Using temporary
|
|
3 DERIVED t1 NULL ALL NULL NULL NULL NULL 6 33.33 Using where; Using temporary
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `zz`.`f1` AS `f1`,`zz`.`f11` AS `f11` from (/* select#2 */ select `tt`.`f1` AS `f1`,`tt`.`f11` AS `f11` from (/* select#3 */ select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11` from `test`.`t1` where (`test`.`t1`.`f1` < 7) group by `test`.`t1`.`f1`) `tt` where (`tt`.`f1` > 2) group by `tt`.`f1`) `zz`
|
|
SELECT * FROM (SELECT * FROM
|
|
(SELECT * FROM t1 WHERE f1 < 7 GROUP BY f1) tt WHERE f1 > 2 GROUP BY f1) zz;
|
|
f1 f11
|
|
3 3
|
|
5 5
|
|
mat in merged derived join mat in merged derived
|
|
EXPLAIN SELECT * FROM
|
|
(SELECT * FROM (SELECT * FROM t1 WHERE f1 < 7 GROUP BY f1) tt WHERE f1 > 2) x
|
|
JOIN
|
|
(SELECT * FROM (SELECT * FROM t1 WHERE f1 < 7 GROUP BY f1) tt WHERE f1 > 2) z
|
|
ON x.f1 = z.f1;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived3> NULL ALL NULL NULL NULL NULL 2 50.00 Using where
|
|
1 PRIMARY <derived5> NULL ref <auto_key0> <auto_key0> 5 tt.f1 2 100.00 NULL
|
|
5 DERIVED t1 NULL ALL NULL NULL NULL NULL 6 33.33 Using where; Using temporary
|
|
3 DERIVED t1 NULL ALL NULL NULL NULL NULL 6 33.33 Using where; Using temporary
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `tt`.`f1` AS `f1`,`tt`.`f11` AS `f11`,`tt`.`f1` AS `f1`,`tt`.`f11` AS `f11` from (/* select#3 */ select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11` from `test`.`t1` where (`test`.`t1`.`f1` < 7) group by `test`.`t1`.`f1`) `tt` join (/* select#5 */ select `t1`.`f1` AS `f1`,`t1`.`f11` AS `f11` from `test`.`t1` where (`t1`.`f1` < 7) group by `t1`.`f1`) `tt` where ((`tt`.`f1` = `tt`.`f1`) and (`tt`.`f1` > 2) and (`tt`.`f1` > 2))
|
|
FLUSH STATUS;
|
|
SELECT * FROM
|
|
(SELECT * FROM (SELECT * FROM t1 WHERE f1 < 7 GROUP BY f1) tt WHERE f1 > 2) x
|
|
JOIN
|
|
(SELECT * FROM (SELECT * FROM t1 WHERE f1 < 7 GROUP BY f1) tt WHERE f1 > 2) z
|
|
ON x.f1 = z.f1;
|
|
f1 f11 f1 f11
|
|
3 3 3 3
|
|
5 5 5 5
|
|
SHOW STATUS LIKE 'Handler_read%';
|
|
Variable_name Value
|
|
Handler_read_first 0
|
|
Handler_read_key 2
|
|
Handler_read_last 0
|
|
Handler_read_next 2
|
|
Handler_read_prev 0
|
|
Handler_read_rnd 0
|
|
Handler_read_rnd_next 29
|
|
FLUSH STATUS;
|
|
merged in merged derived join merged in merged derived
|
|
EXPLAIN SELECT * FROM
|
|
(SELECT * FROM
|
|
(SELECT * FROM t1 WHERE f1 < 7 ) tt WHERE f1 > 2 ) x
|
|
JOIN
|
|
(SELECT * FROM
|
|
(SELECT * FROM t1 WHERE f1 < 7 ) tt WHERE f1 > 2 ) z
|
|
ON x.f1 = z.f1;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 6 16.67 Using where
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 6 16.67 Using where; Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11`,`t1`.`f1` AS `f1`,`t1`.`f11` AS `f11` from `test`.`t1` join `test`.`t1` where ((`t1`.`f1` = `test`.`t1`.`f1`) and (`t1`.`f1` > 2) and (`test`.`t1`.`f1` < 7) and (`test`.`t1`.`f1` > 2) and (`test`.`t1`.`f1` < 7))
|
|
SELECT * FROM
|
|
(SELECT * FROM
|
|
(SELECT * FROM t1 WHERE f1 < 7 ) tt WHERE f1 > 2 ) x
|
|
JOIN
|
|
(SELECT * FROM
|
|
(SELECT * FROM t1 WHERE f1 < 7 ) tt WHERE f1 > 2 ) z
|
|
ON x.f1 = z.f1;
|
|
f1 f11 f1 f11
|
|
3 3 3 3
|
|
5 5 5 5
|
|
materialized in materialized derived join
|
|
materialized in materialized derived
|
|
EXPLAIN SELECT * FROM
|
|
(SELECT * FROM
|
|
(SELECT * FROM t1 WHERE f1 < 7 GROUP BY f1) tt WHERE f1 > 2 GROUP BY f1) x
|
|
JOIN
|
|
(SELECT * FROM
|
|
(SELECT * FROM t1 WHERE f1 < 7 GROUP BY f1) tt WHERE f1 > 2 GROUP BY f1) z
|
|
ON x.f1 = z.f1;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived2> NULL ALL NULL NULL NULL NULL 2 100.00 Using where
|
|
1 PRIMARY <derived4> NULL ref <auto_key0> <auto_key0> 5 x.f1 2 100.00 NULL
|
|
4 DERIVED <derived5> NULL ALL NULL NULL NULL NULL 2 50.00 Using where; Using temporary
|
|
5 DERIVED t1 NULL ALL NULL NULL NULL NULL 6 33.33 Using where; Using temporary
|
|
2 DERIVED <derived3> NULL ALL NULL NULL NULL NULL 2 50.00 Using where; Using temporary
|
|
3 DERIVED t1 NULL ALL NULL NULL NULL NULL 6 33.33 Using where; Using temporary
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `x`.`f1` AS `f1`,`x`.`f11` AS `f11`,`z`.`f1` AS `f1`,`z`.`f11` AS `f11` from (/* select#2 */ select `tt`.`f1` AS `f1`,`tt`.`f11` AS `f11` from (/* select#3 */ select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11` from `test`.`t1` where (`test`.`t1`.`f1` < 7) group by `test`.`t1`.`f1`) `tt` where (`tt`.`f1` > 2) group by `tt`.`f1`) `x` join (/* select#4 */ select `tt`.`f1` AS `f1`,`tt`.`f11` AS `f11` from (/* select#5 */ select `t1`.`f1` AS `f1`,`t1`.`f11` AS `f11` from `test`.`t1` where (`t1`.`f1` < 7) group by `t1`.`f1`) `tt` where (`tt`.`f1` > 2) group by `tt`.`f1`) `z` where (`z`.`f1` = `x`.`f1`)
|
|
SELECT * FROM
|
|
(SELECT * FROM
|
|
(SELECT * FROM t1 WHERE f1 < 7 GROUP BY f1) tt WHERE f1 > 2 GROUP BY f1) x
|
|
JOIN
|
|
(SELECT * FROM
|
|
(SELECT * FROM t1 WHERE f1 < 7 GROUP BY f1) tt WHERE f1 > 2 GROUP BY f1) z
|
|
ON x.f1 = z.f1;
|
|
f1 f11 f1 f11
|
|
3 3 3 3
|
|
5 5 5 5
|
|
merged view in materialized derived
|
|
EXPLAIN
|
|
SELECT * FROM (SELECT * FROM v4 GROUP BY 1) tt;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived2> NULL ALL NULL NULL NULL NULL 2 100.00 NULL
|
|
2 DERIVED t2 NULL ALL NULL NULL NULL NULL 6 33.33 Using where; Using temporary
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `tt`.`f2` AS `f2`,`tt`.`f22` AS `f22` from (/* select#2 */ select `test`.`t2`.`f2` AS `f2`,`test`.`t2`.`f22` AS `f22` from `test`.`t2` where (`test`.`t2`.`f2` in (2,3)) group by `test`.`t2`.`f2`) `tt`
|
|
SELECT * FROM (SELECT * FROM v4 GROUP BY 1) tt;
|
|
f2 f22
|
|
3 3
|
|
2 2
|
|
materialized view in merged derived
|
|
EXPLAIN
|
|
SELECT * FROM ( SELECT * FROM v1 WHERE f1 < 7) tt;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived3> NULL ALL NULL NULL NULL NULL 6 33.33 Using where
|
|
3 DERIVED t1 NULL ALL NULL NULL NULL NULL 6 100.00 Using temporary
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `v1`.`f1` AS `f1`,`v1`.`f11` AS `f11` from `test`.`v1` where (`v1`.`f1` < 7)
|
|
SELECT * FROM ( SELECT * FROM v1 WHERE f1 < 7) tt;
|
|
f1 f11
|
|
1 1
|
|
2 2
|
|
3 3
|
|
5 5
|
|
merged view in a merged view in a merged derived
|
|
CREATE VIEW v6 AS SELECT * FROM v4 WHERE f2 < 7;
|
|
EXPLAIN SELECT * FROM (SELECT * FROM v6) tt;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 6 16.67 Using where
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t2`.`f2` AS `f2`,`test`.`t2`.`f22` AS `f22` from `test`.`t2` where ((`test`.`t2`.`f2` < 7) and (`test`.`t2`.`f2` in (2,3)))
|
|
SELECT * FROM (SELECT * FROM v6) tt;
|
|
f2 f22
|
|
3 3
|
|
2 2
|
|
materialized view in a merged view in a materialized derived
|
|
CREATE VIEW v7 AS SELECT * FROM v1;
|
|
EXPLAIN SELECT * FROM (SELECT * FROM v7 GROUP BY 1) tt;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived2> NULL ALL NULL NULL NULL NULL 6 100.00 NULL
|
|
2 DERIVED <derived4> NULL ALL NULL NULL NULL NULL 6 100.00 Using temporary
|
|
4 DERIVED t1 NULL ALL NULL NULL NULL NULL 6 100.00 Using temporary
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `tt`.`f1` AS `f1`,`tt`.`f11` AS `f11` from (/* select#2 */ select `v1`.`f1` AS `f1`,`v1`.`f11` AS `f11` from `test`.`v1` group by `v1`.`f1`) `tt`
|
|
SELECT * FROM (SELECT * FROM v7 GROUP BY 1) tt;
|
|
f1 f11
|
|
1 1
|
|
2 2
|
|
3 3
|
|
5 5
|
|
9 9
|
|
7 7
|
|
JOIN of above two
|
|
EXPLAIN SELECT * FROM v6 JOIN v7 ON f2=f1;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t2 NULL ALL NULL NULL NULL NULL 6 16.67 Using where
|
|
1 PRIMARY <derived5> NULL ref <auto_key0> <auto_key0> 5 test.t2.f2 2 100.00 NULL
|
|
5 DERIVED t1 NULL ALL NULL NULL NULL NULL 6 100.00 Using temporary
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t2`.`f2` AS `f2`,`test`.`t2`.`f22` AS `f22`,`v1`.`f1` AS `f1`,`v1`.`f11` AS `f11` from `test`.`t2` join `test`.`v1` where ((`v1`.`f1` = `test`.`t2`.`f2`) and (`test`.`t2`.`f2` < 7) and (`test`.`t2`.`f2` in (2,3)))
|
|
SELECT * FROM v6 JOIN v7 ON f2=f1;
|
|
f2 f22 f1 f11
|
|
3 3 3 3
|
|
2 2 2 2
|
|
test two keys
|
|
CREATE TABLE t3(f3 INT, f33 INT);
|
|
INSERT INTO t1 VALUES(6,6),(8,8);
|
|
INSERT INTO t3 VALUES(1,1),(2,2),(3,3),(5,5);
|
|
EXPLAIN SELECT * FROM t1 JOIN (SELECT * FROM t2) tt ON t1.f1=tt.f2
|
|
JOIN t3 ON tt.f22=t3.f3;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t3 NULL ALL NULL NULL NULL NULL 4 100.00 NULL
|
|
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 6 16.67 Using where; Using join buffer (Block Nested Loop)
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 8 12.50 Using where; Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11`,`test`.`t2`.`f2` AS `f2`,`test`.`t2`.`f22` AS `f22`,`test`.`t3`.`f3` AS `f3`,`test`.`t3`.`f33` AS `f33` from `test`.`t1` join `test`.`t2` join `test`.`t3` where ((`test`.`t1`.`f1` = `test`.`t2`.`f2`) and (`test`.`t2`.`f22` = `test`.`t3`.`f3`))
|
|
SELECT * FROM t1 JOIN (SELECT * FROM t2) tt ON t1.f1=tt.f2
|
|
JOIN t3 ON tt.f22=t3.f3;
|
|
f1 f11 f2 f22 f3 f33
|
|
1 1 1 1 1 1
|
|
2 2 2 2 2 2
|
|
3 3 3 3 3 3
|
|
DROP TABLE t1,t2,t3;
|
|
DROP VIEW v1,v2,v3,v4,v6,v7;
|
|
#
|
|
#
|
|
# BUG#11783262: CRASH IN ITEM_FIELD::ITEM_FIELD IN ITEM.CC ON SUBQUERY
|
|
# IN FROM WITH WL5274
|
|
#
|
|
CREATE TABLE t1 (
|
|
col_int_key INT,
|
|
col_time_key time,
|
|
col_varchar_key VARCHAR(1),
|
|
KEY col_int_key (col_int_key),
|
|
KEY col_varchar_key (col_varchar_key,col_int_key)
|
|
) ENGINE=INNODB;
|
|
SELECT alias1.col_time_key AS field1
|
|
FROM ( ( SELECT SQ1_alias1.* FROM t1 AS SQ1_alias1 ) AS alias1
|
|
INNER JOIN t1 AS alias2
|
|
ON (alias2.col_int_key = alias1.col_int_key)
|
|
)
|
|
WHERE alias1.col_int_key = 207
|
|
ORDER BY alias1.col_varchar_key, field1;
|
|
field1
|
|
DROP TABLE t1;
|
|
#
|
|
# Bug#11807437: VALGRIND WARNING IN MYSQL_DERIVED_OPTIMIZE() LINE 293
|
|
#
|
|
CREATE TABLE t1 (
|
|
f1 int(11) DEFAULT NULL
|
|
);
|
|
Warnings:
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
SELECT 1
|
|
FROM (
|
|
SELECT 1, 2 FROM DUAL
|
|
WHERE EXISTS (
|
|
SELECT f1
|
|
FROM t1
|
|
)) AS tt
|
|
;
|
|
1
|
|
DROP TABLE t1;
|
|
#
|
|
#
|
|
# Bug#11808582: VALGRIND ON WL#5274: INVALID WRITE IN MC_REPLACE_STRMEM.C:493)
|
|
#
|
|
CREATE TABLE t1 (
|
|
pk INT NOT NULL AUTO_INCREMENT,
|
|
col_int_key INT,
|
|
col_time_key time,
|
|
col_varchar_key VARCHAR(1),
|
|
PRIMARY KEY (pk),
|
|
KEY col_int_key (col_int_key),
|
|
KEY col_varchar_key (col_varchar_key,col_int_key)
|
|
) ENGINE=InnoDB;
|
|
SELECT tt.col_time_key
|
|
FROM ( ( SELECT * FROM t1 ) AS tt
|
|
INNER JOIN t1
|
|
ON (t1.col_int_key = tt.col_int_key)
|
|
)
|
|
WHERE tt.col_int_key = 207
|
|
ORDER BY tt.col_varchar_key, tt.pk ASC, 1;
|
|
col_time_key
|
|
DROP TABLE t1;
|
|
#
|
|
# Bug#11791677 - ASSERTION FAILED IN JOIN_MATERIALIZE_TABLE IN
|
|
# SQL_SELECT.CC ON NESTED SUBQUERY
|
|
#
|
|
CREATE TABLE t1 (
|
|
pk int(11) NOT NULL AUTO_INCREMENT,
|
|
col_int_key int(11) DEFAULT NULL,
|
|
col_varchar_key varchar(1) DEFAULT NULL,
|
|
PRIMARY KEY (pk),
|
|
KEY col_varchar_key (col_varchar_key,col_int_key)
|
|
);
|
|
Warnings:
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
INSERT INTO t1 VALUES (10,8,'v'), (29,4,'c');
|
|
CREATE TABLE t2 (
|
|
pk int(11) NOT NULL AUTO_INCREMENT,
|
|
col_int_nokey int(11) DEFAULT NULL,
|
|
col_varchar_key varchar(1) DEFAULT NULL,
|
|
PRIMARY KEY (pk)
|
|
);
|
|
Warnings:
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
INSERT INTO t2 VALUES (16,1,'c'), (20,4,'d');
|
|
CREATE TABLE t3 (
|
|
`field1` varchar(1) DEFAULT NULL,
|
|
`field2` int(11) DEFAULT NULL
|
|
);
|
|
Warnings:
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
INSERT INTO t3 VALUES ('m',6),('c',4);
|
|
SELECT *
|
|
FROM t3
|
|
WHERE (field1, field2) IN (
|
|
SELECT t1.col_varchar_key AS field1,
|
|
t1.col_int_key AS field2
|
|
FROM ( t1 INNER JOIN (
|
|
SELECT t2.*
|
|
FROM t2
|
|
WHERE t2.col_int_nokey < t2.pk ) AS alias2
|
|
ON (alias2.col_varchar_key = t1.col_varchar_key ) )
|
|
GROUP BY field1, field2
|
|
ORDER BY t1.col_int_key, t1 .pk DESC )
|
|
;
|
|
field1 field2
|
|
c 4
|
|
DROP TABLE t1,t2,t3;
|
|
#
|
|
#
|
|
# Bug#11791705 - CRASH IN JOIN_MATERIALIZE_TABLE OR ASSERTION FAIL:
|
|
# !TAB->SAVE_READ_FIRST_RECORD
|
|
#
|
|
CREATE TABLE t1 (a INTEGER);
|
|
INSERT INTO t1 VALUES (NULL),(NULL);
|
|
SELECT * FROM t1
|
|
WHERE (a, a) NOT IN
|
|
(SELECT * FROM (SELECT 8, 4 UNION SELECT 2, 3) tt) ;
|
|
a
|
|
DROP TABLE t1;
|
|
#
|
|
# Bug#11791649 - ASSERT: FIXED == 0, IN ITEM.CC ON EXPLAIN WITH VIEW
|
|
# IN SUBQUERY
|
|
#
|
|
CREATE TABLE t1 (pk int);
|
|
INSERT INTO t1 VALUES (1);
|
|
CREATE TABLE t2 (col_varchar_nokey varchar(1));
|
|
INSERT INTO t2 VALUES ('m'), ('f');
|
|
EXPLAIN SELECT pk
|
|
FROM t1
|
|
WHERE (2) IN
|
|
( SELECT *
|
|
FROM (SELECT COUNT(col_varchar_nokey) FROM t2) d
|
|
)
|
|
;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 NULL system NULL NULL NULL NULL 1 100.00 NULL
|
|
1 PRIMARY <derived3> NULL ALL NULL NULL NULL NULL 1 100.00 Using where; FirstMatch(t1)
|
|
3 DERIVED t2 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select '1' AS `pk` from <constant table> semi join ((/* select#3 */ select count(`test`.`t2`.`col_varchar_nokey`) AS `COUNT(col_varchar_nokey)` from `test`.`t2`) `d`) where (`d`.`COUNT(col_varchar_nokey)` = 2)
|
|
DROP TABLE t1,t2;
|
|
#
|
|
#
|
|
# Bug#12735934 - Lost LIMIT clause caused wrong result.
|
|
#
|
|
CREATE TABLE t1 (f1 VARCHAR(1), key(f1));
|
|
INSERT INTO t1 VALUES ('a');
|
|
CREATE VIEW v1 AS SELECT f1 FROM t1 ORDER BY 1 LIMIT 0;
|
|
SELECT * FROM v1;
|
|
f1
|
|
DROP VIEW v1;
|
|
DROP TABLE t1;
|
|
#
|
|
#
|
|
# Bug#12726927: An outdated assertion caused server failure.
|
|
#
|
|
CREATE TABLE t1 (
|
|
pk int(11) NOT NULL AUTO_INCREMENT,
|
|
col_int_nokey int(11) NOT NULL,
|
|
col_varchar_key varchar(1) NOT NULL,
|
|
PRIMARY KEY (pk),
|
|
KEY col_varchar_key (col_varchar_key)
|
|
) ENGINE=MyISAM;
|
|
Warnings:
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
INSERT INTO t1 VALUES (10,1,'v'), (24,18,'h');
|
|
CREATE TABLE t2 (
|
|
pk int(11) NOT NULL AUTO_INCREMENT,
|
|
col_date_key date NOT NULL,
|
|
col_date_nokey date NOT NULL,
|
|
col_time_nokey time NOT NULL,
|
|
col_varchar_key varchar(1) NOT NULL,
|
|
col_varchar_nokey varchar(1) NOT NULL,
|
|
PRIMARY KEY (pk),
|
|
KEY col_date_key (col_date_key),
|
|
KEY col_varchar_key (col_varchar_key)
|
|
) ENGINE=MyISAM;
|
|
Warnings:
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
INSERT INTO t2 VALUES (1,'1900-01-01','1900-01-01','00:00:00','k','k');
|
|
SELECT OUTR.col_date_key
|
|
FROM t2 AS OUTR2
|
|
LEFT JOIN t2 AS OUTR ON OUTR2.pk < OUTR.pk
|
|
WHERE ( OUTR.col_varchar_nokey , OUTR.col_varchar_key )
|
|
IN (
|
|
SELECT DISTINCT col_varchar_key , col_varchar_key
|
|
FROM t1
|
|
WHERE col_int_nokey XOR OUTR.col_time_nokey
|
|
)
|
|
XOR OUTR.col_date_nokey IS NULL
|
|
;
|
|
col_date_key
|
|
NULL
|
|
DROP TABLE t1,t2;
|
|
#
|
|
#
|
|
# Bug#12799731 - CRASH IN END_READ_RECORD.
|
|
#
|
|
create table t1(f1 char(255) charset utf8);
|
|
Warnings:
|
|
Warning 3719 'utf8' is currently an alias for the character set UTF8MB3, but will be an alias for UTF8MB4 in a future release. Please consider using UTF8MB4 in order to be unambiguous.
|
|
insert into t1 values('1'),('2'),('3'),('4'),('5'),('6'),('7'),('8'),('9'),('0');
|
|
set @save_internal_tmp_mem_storage_engine= @@internal_tmp_mem_storage_engine;
|
|
set session internal_tmp_mem_storage_engine='memory';
|
|
set @save_heap_size= @@max_heap_table_size;
|
|
set @@max_heap_table_size= 1;
|
|
Warnings:
|
|
Warning 1292 Truncated incorrect max_heap_table_size value: '1'
|
|
SET @optimizer_switch_saved= @@optimizer_switch;
|
|
SET @@optimizer_switch="derived_merge=off";
|
|
flush status;
|
|
select count(*) from t1 join (
|
|
select t1.f1 from t1 join t1 as t2 join t1 as t3) tt on t1.f1 = tt.f1;
|
|
count(*)
|
|
1000
|
|
show status like 'Handler_write';
|
|
Variable_name Value
|
|
Handler_write 1021
|
|
set @@max_heap_table_size= @save_heap_size;
|
|
set session internal_tmp_mem_storage_engine= @save_internal_tmp_mem_storage_engine;
|
|
SET @@optimizer_switch= @optimizer_switch_saved;
|
|
drop table t1;
|
|
#
|
|
#
|
|
# Bug#12896124: Crash on rqg_mdl_stability test
|
|
#
|
|
CREATE TABLE t1(f1 INT);
|
|
INSERT INTO t1 VALUES (1),(2),(3);
|
|
CREATE FUNCTION func1 (param1 INTEGER) RETURNS INT NOT DETERMINISTIC
|
|
return param1;
|
|
CREATE FUNCTION func2 (param1 INTEGER) RETURNS INT
|
|
return param1;
|
|
SET @optimizer_switch_saved= @@optimizer_switch;
|
|
SET @@optimizer_switch="derived_merge=off";
|
|
SELECT * FROM (SELECT * FROM t1) tt WHERE f1 = func1(f1);
|
|
f1
|
|
1
|
|
2
|
|
3
|
|
EXPLAIN SELECT * FROM (SELECT * FROM t1) tt WHERE f1 = func1(f1);
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived2> NULL ALL NULL NULL NULL NULL 3 33.33 Using where
|
|
2 DERIVED t1 NULL ALL NULL NULL NULL NULL 3 100.00 NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `tt`.`f1` AS `f1` from (/* select#2 */ select `test`.`t1`.`f1` AS `f1` from `test`.`t1`) `tt` where (`tt`.`f1` = `func1`(`tt`.`f1`))
|
|
SELECT * FROM (SELECT * FROM t1) tt WHERE f1 = func2(f1);
|
|
f1
|
|
1
|
|
2
|
|
3
|
|
EXPLAIN SELECT * FROM (SELECT * FROM t1) tt WHERE f1 = func2(f1);
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived2> NULL ALL NULL NULL NULL NULL 3 33.33 Using where
|
|
2 DERIVED t1 NULL ALL NULL NULL NULL NULL 3 100.00 NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `tt`.`f1` AS `f1` from (/* select#2 */ select `test`.`t1`.`f1` AS `f1` from `test`.`t1`) `tt` where (`tt`.`f1` = `func2`(`tt`.`f1`))
|
|
SET @@optimizer_switch= @optimizer_switch_saved;
|
|
DROP FUNCTION func1;
|
|
DROP FUNCTION func2;
|
|
DROP TABLE t1;
|
|
#
|
|
#
|
|
# Bug#12909844: Missing type cast caused false assertion
|
|
#
|
|
CREATE TABLE t1 ( fk INT) ENGINE=INNODB;
|
|
CREATE TABLE t2 (
|
|
f1 INT, f2 INT, f3 INT, f4 INT, f5 INT, f6 INT,
|
|
f7 INT, f8 INT, f9 INT, f10 INT, f11 INT, f12 INT,
|
|
f13 INT, f14 INT, f15 INT, f16 INT, f17 INT, f18 INT,
|
|
f19 INT, f20 INT, f21 INT, f22 INT, f23 INT, f24 INT,
|
|
f25 INT, f26 INT, f27 INT, f28 INT, f29 INT, f30 INT,
|
|
f31 INT, f32 TEXT, fk INT) ENGINE=INNODB;
|
|
SET @optimizer_switch_saved= @@optimizer_switch;
|
|
SET @@optimizer_switch="derived_merge=off";
|
|
SELECT alias2.fk AS field1 FROM t1 AS alias1 JOIN
|
|
(SELECT * FROM t2 ) AS alias2 ON alias1.fk = alias2.fk;
|
|
field1
|
|
EXPLAIN
|
|
SELECT alias2.fk AS field1 FROM t1 AS alias1 JOIN
|
|
(SELECT * FROM t2 ) AS alias2 ON alias1.fk = alias2.fk;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY alias1 NULL ALL NULL NULL NULL NULL 1 100.00 Using where
|
|
1 PRIMARY <derived2> NULL ref <auto_key0> <auto_key0> 5 test.alias1.fk 2 100.00 NULL
|
|
2 DERIVED t2 NULL ALL NULL NULL NULL NULL 1 100.00 NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `alias2`.`fk` AS `field1` from `test`.`t1` `alias1` join (/* select#2 */ select `test`.`t2`.`f1` AS `f1`,`test`.`t2`.`f2` AS `f2`,`test`.`t2`.`f3` AS `f3`,`test`.`t2`.`f4` AS `f4`,`test`.`t2`.`f5` AS `f5`,`test`.`t2`.`f6` AS `f6`,`test`.`t2`.`f7` AS `f7`,`test`.`t2`.`f8` AS `f8`,`test`.`t2`.`f9` AS `f9`,`test`.`t2`.`f10` AS `f10`,`test`.`t2`.`f11` AS `f11`,`test`.`t2`.`f12` AS `f12`,`test`.`t2`.`f13` AS `f13`,`test`.`t2`.`f14` AS `f14`,`test`.`t2`.`f15` AS `f15`,`test`.`t2`.`f16` AS `f16`,`test`.`t2`.`f17` AS `f17`,`test`.`t2`.`f18` AS `f18`,`test`.`t2`.`f19` AS `f19`,`test`.`t2`.`f20` AS `f20`,`test`.`t2`.`f21` AS `f21`,`test`.`t2`.`f22` AS `f22`,`test`.`t2`.`f23` AS `f23`,`test`.`t2`.`f24` AS `f24`,`test`.`t2`.`f25` AS `f25`,`test`.`t2`.`f26` AS `f26`,`test`.`t2`.`f27` AS `f27`,`test`.`t2`.`f28` AS `f28`,`test`.`t2`.`f29` AS `f29`,`test`.`t2`.`f30` AS `f30`,`test`.`t2`.`f31` AS `f31`,`test`.`t2`.`f32` AS `f32`,`test`.`t2`.`fk` AS `fk` from `test`.`t2`) `alias2` where (`alias2`.`fk` = `test`.`alias1`.`fk`)
|
|
SET @@optimizer_switch= @optimizer_switch_saved;
|
|
DROP TABLE t1, t2;
|
|
#
|
|
#
|
|
# Bug#12910039: Incorrect merge caused segmentation fault.
|
|
#
|
|
CREATE TABLE t1 (f1 int) ENGINE=myisam;
|
|
CREATE TABLE t2 (f1 text) ENGINE=innodb;
|
|
SELECT 1 FROM (
|
|
( SELECT * FROM ( SELECT * FROM t2 ) AS alias1 ) AS alias1,
|
|
( SELECT * FROM t1 ) AS alias2 );
|
|
1
|
|
DROP TABLE t1,t2;
|
|
#
|
|
#
|
|
# Bug#12910006: MRR initialization on a derived table caused crash.
|
|
#
|
|
SET @save_switch= @@SESSION.optimizer_switch;
|
|
SET @@SESSION.optimizer_switch="batched_key_access=on,derived_merge=off";
|
|
CREATE TABLE t1 ( pk integer auto_increment,
|
|
col_blob_key blob, primary key (pk)) ENGINE=innodb;
|
|
CREATE TABLE t2 (col_tinytext tinytext null,
|
|
pk integer auto_increment, col_text text,
|
|
col_blob blob, primary key (pk)) ENGINE=innodb;
|
|
SELECT alias1.col_text AS field1 ,
|
|
alias1.col_tinytext AS field2
|
|
FROM t2 AS alias1
|
|
LEFT OUTER JOIN ( SELECT * FROM t1 ) AS alias2 ON alias1.pk = alias2.pk
|
|
WHERE alias2.pk >=1 AND alias2.pk < 3
|
|
ORDER BY field1,field2 ASC;
|
|
field1 field2
|
|
SET @@SESSION.optimizer_switch= @save_switch;
|
|
DROP TABLE t1, t2;
|
|
#
|
|
# Bug#13106350: MRR initialization on a derived table caused crash.
|
|
#
|
|
SET @save_switch= @@optimizer_switch;
|
|
SET @@optimizer_switch="materialization=off,derived_merge=off";
|
|
CREATE TABLE t1 (pk INTEGER PRIMARY KEY, vc VARCHAR(20)) charset utf8mb4;
|
|
INSERT INTO t1 VALUES(7, 'seven'), (13, 'thirteen');
|
|
CREATE TABLE t2 (pk INTEGER PRIMARY KEY, vc1 VARCHAR(20), vc2 VARCHAR(20)) charset utf8mb4;
|
|
INSERT INTO t2 VALUES(7, 'seven', 's'), (14, 'fourteen', 'f');
|
|
CREATE TABLE t3 (pk INTEGER PRIMARY KEY, vc VARCHAR(20)) charset utf8mb4;
|
|
INSERT INTO t3 VALUES(5, 'f'), (6, 's'), (7, 's');
|
|
explain SELECT derived.vc
|
|
FROM (SELECT * FROM t1) AS derived
|
|
WHERE derived.vc IN (
|
|
SELECT t2.vc1
|
|
FROM t2 JOIN t3 ON t2.vc2=t3.vc);
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t2 NULL ALL NULL NULL NULL NULL 2 100.00 Using where; Start temporary
|
|
1 PRIMARY t3 NULL ALL NULL NULL NULL NULL 3 33.33 Using where; Using join buffer (Block Nested Loop)
|
|
1 PRIMARY <derived2> NULL ref <auto_key0> <auto_key0> 83 test.t2.vc1 2 100.00 End temporary
|
|
2 DERIVED t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `derived`.`vc` AS `vc` from (/* select#2 */ select `test`.`t1`.`pk` AS `pk`,`test`.`t1`.`vc` AS `vc` from `test`.`t1`) `derived` semi join (`test`.`t2` join `test`.`t3`) where ((`test`.`t3`.`vc` = `test`.`t2`.`vc2`) and (`derived`.`vc` = `test`.`t2`.`vc1`))
|
|
SELECT derived.vc
|
|
FROM (SELECT * FROM t1) AS derived
|
|
WHERE derived.vc IN (
|
|
SELECT t2.vc1
|
|
FROM t2 JOIN t3 ON t2.vc2=t3.vc);
|
|
vc
|
|
seven
|
|
SET @@optimizer_switch= @save_switch;
|
|
DROP TABLE t1, t2, t3;
|
|
#
|
|
#
|
|
# Bug#13107577: Derived table in a semi-join caused failed assertion.
|
|
#
|
|
SET @save_switch= @@optimizer_switch;
|
|
SET @@optimizer_switch="derived_merge=off";
|
|
CREATE TABLE t1 (
|
|
`col_int_key` int(11) NOT NULL,
|
|
`col_varchar_nokey` varchar(1) NOT NULL
|
|
) ENGINE=MyISAM;
|
|
Warnings:
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
INSERT INTO t1 VALUES (8,'m'), (4,'b'), (4,'x'), (7,'g'), (4,'p');
|
|
CREATE VIEW v1 AS SELECT * FROM t1;
|
|
SELECT col_int_key
|
|
FROM t1
|
|
WHERE ( NOT EXISTS (
|
|
SELECT col_varchar_nokey
|
|
FROM t1
|
|
WHERE ( 7 ) IN (
|
|
SELECT v1.col_int_key
|
|
FROM ( v1 JOIN ( SELECT * FROM t1 ) AS d1
|
|
ON ( d1.col_varchar_nokey = v1.col_varchar_nokey ) )
|
|
)
|
|
) )
|
|
;
|
|
col_int_key
|
|
DROP VIEW v1;
|
|
DROP TABLE t1;
|
|
SET @@optimizer_switch= @save_switch;
|
|
#
|
|
# Bug#13105833: Crash when using LooseScan sj-strategy for a view.
|
|
#
|
|
CREATE TABLE t1 (pk int(11)) ENGINE=InnoDB;
|
|
Warnings:
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
INSERT INTO t1 VALUES (1);
|
|
CREATE TABLE t2 (pk int(11)) ENGINE=InnoDB;
|
|
Warnings:
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
INSERT INTO t2 VALUES (1), (2), (3);
|
|
CREATE VIEW v1 AS SELECT DISTINCT pk FROM t1;
|
|
SELECT pk
|
|
FROM t2
|
|
WHERE pk IN ( SELECT * FROM v1 ) ;
|
|
pk
|
|
1
|
|
DROP TABLE t1,t2;
|
|
DROP VIEW v1;
|
|
#
|
|
#
|
|
# Bug#13261277: Unchecked key length caused missing records.
|
|
#
|
|
CREATE TABLE t1 (
|
|
col_varchar varchar(1024) CHARACTER SET utf8 DEFAULT NULL,
|
|
stub1 varchar(1024) CHARACTER SET utf8 DEFAULT NULL,
|
|
stub2 varchar(1024) CHARACTER SET utf8 DEFAULT NULL,
|
|
stub3 varchar(1024) CHARACTER SET utf8 DEFAULT NULL
|
|
);
|
|
Warnings:
|
|
Warning 3719 'utf8' is currently an alias for the character set UTF8MB3, but will be an alias for UTF8MB4 in a future release. Please consider using UTF8MB4 in order to be unambiguous.
|
|
Warning 3719 'utf8' is currently an alias for the character set UTF8MB3, but will be an alias for UTF8MB4 in a future release. Please consider using UTF8MB4 in order to be unambiguous.
|
|
Warning 3719 'utf8' is currently an alias for the character set UTF8MB3, but will be an alias for UTF8MB4 in a future release. Please consider using UTF8MB4 in order to be unambiguous.
|
|
Warning 3719 'utf8' is currently an alias for the character set UTF8MB3, but will be an alias for UTF8MB4 in a future release. Please consider using UTF8MB4 in order to be unambiguous.
|
|
INSERT INTO t1 VALUES
|
|
('d','d','l','ther'),
|
|
(NULL,'s','NJBIQ','trzetuchv'),
|
|
(-715390976,'coul','MYWFB','cfhtrzetu'),
|
|
(1696792576,'f','i\'s','c'),
|
|
(1,'i','ltpemcfhtr','gsltpemcf'),
|
|
(-663027712,'mgsltpemcf','sa','amgsltpem'),
|
|
(-1686700032,'JPRVK','i','vamgsltpe'),
|
|
(NULL,'STUNB','UNVJV','u'),
|
|
(5,'oka','qyihvamgsl','AXSMD'),
|
|
(NULL,'tqwmqyihva','h','yntqwmqyi'),
|
|
(3,'EGMJN','e','e');
|
|
CREATE TABLE t2 (
|
|
col_varchar varchar(10) DEFAULT NULL,
|
|
col_int INT DEFAULT NULL
|
|
) charset utf8mb4;
|
|
INSERT INTO t2 VALUES ('d',9);
|
|
SET @save_heap_size= @@max_heap_table_size;
|
|
SET @@max_heap_table_size= 16384;
|
|
SET @optimizer_switch_saved= @@optimizer_switch;
|
|
SET @@optimizer_switch="derived_merge=off";
|
|
SELECT t2.col_int
|
|
FROM t2
|
|
RIGHT JOIN ( SELECT * FROM t1 ) AS dt
|
|
ON t2.col_varchar = dt.col_varchar
|
|
WHERE t2.col_int IS NOT NULL ;
|
|
col_int
|
|
9
|
|
# Shouldn't use auto_key0 for derived table
|
|
EXPLAIN
|
|
SELECT t2.col_int
|
|
FROM t2
|
|
RIGHT JOIN ( SELECT * FROM t1 ) AS dt
|
|
ON t2.col_varchar = dt.col_varchar
|
|
WHERE t2.col_int IS NOT NULL ;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t2 NULL system NULL NULL NULL NULL 1 100.00 NULL
|
|
1 PRIMARY <derived2> NULL ALL NULL NULL NULL NULL 11 100.00 Using where
|
|
2 DERIVED t1 NULL ALL NULL NULL NULL NULL 11 100.00 NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select '9' AS `col_int` from (/* select#2 */ select `test`.`t1`.`col_varchar` AS `col_varchar`,`test`.`t1`.`stub1` AS `stub1`,`test`.`t1`.`stub2` AS `stub2`,`test`.`t1`.`stub3` AS `stub3` from `test`.`t1`) `dt` where (('9' is not null) and ('d' = convert(`dt`.`col_varchar` using utf8mb4)))
|
|
SET @@max_heap_table_size= @save_heap_size;
|
|
SET @@optimizer_switch= @optimizer_switch_saved;
|
|
DROP TABLE t1,t2;
|
|
#
|
|
#
|
|
# Bug#13383857: Another crash in memcpy from
|
|
# join_cache::write_record_data with semijoin
|
|
#
|
|
CREATE TABLE t1 (
|
|
col_int_key INT DEFAULT NULL,
|
|
col_time_nokey TIME DEFAULT NULL,
|
|
col_varchar_key VARCHAR(1) DEFAULT NULL,
|
|
col_varchar_nokey VARCHAR(1) DEFAULT NULL,
|
|
KEY col_int_key (col_int_key),
|
|
KEY col_varchar_key (col_varchar_key,col_int_key)
|
|
) charset latin1;
|
|
INSERT INTO t1 VALUES
|
|
(8,'22:55:23','x','x'),
|
|
(7,'10:19:31','d','d'),
|
|
(1,'14:40:36','r','r'),
|
|
(7,'04:37:47','f','f'),
|
|
(9,'19:34:06','y','y'),
|
|
(NULL,'20:35:33','u','u'),
|
|
(1,NULL,'m','m'),
|
|
(9,'14:43:37',NULL,NULL),
|
|
(2,'02:23:09','o','o'),
|
|
(9,'01:22:45','w','w'),
|
|
(2,'00:00:00','m','m'),
|
|
(4,'00:13:25','q','q'),
|
|
(0,'03:47:16',NULL,NULL),
|
|
(4,'01:41:48','d','d'),
|
|
(8,'00:00:00','g','g'),
|
|
(NULL,'22:32:04','x','x'),
|
|
(NULL,'16:44:14','f','f'),
|
|
(0,'17:38:37','p','p'),
|
|
(NULL,'08:46:48','j','j'),
|
|
(8,'14:11:27','c','c');
|
|
CREATE TABLE t2 (
|
|
col_int_key INT DEFAULT NULL,
|
|
col_time_nokey TIME DEFAULT NULL,
|
|
col_varchar_key VARCHAR(1) DEFAULT NULL,
|
|
col_varchar_nokey VARCHAR(1) DEFAULT NULL,
|
|
KEY col_int_key (col_int_key),
|
|
KEY col_varchar_key (col_varchar_key,col_int_key)
|
|
) charset latin1;
|
|
INSERT INTO t2 VALUES
|
|
(4,'22:34:09','v','v'),
|
|
(62,'14:26:02','v','v'),
|
|
(7,'14:03:03','c','c'),
|
|
(1,'01:46:09',NULL,NULL),
|
|
(0,'16:21:18','x','x'),
|
|
(7,'18:56:33','i','i'),
|
|
(7,NULL,'e','e'),
|
|
(1,'09:29:08','p','p'),
|
|
(7,'19:11:10','s','s'),
|
|
(1,'11:57:26','j','j'),
|
|
(5,'00:39:46','z','z'),
|
|
(2,'03:28:15','c','c'),
|
|
(0,'06:44:18','a','a'),
|
|
(1,'14:36:39','q','q'),
|
|
(8,'18:42:45','y','y'),
|
|
(1,'02:57:29',NULL,NULL),
|
|
(1,'16:46:13','r','r'),
|
|
(9,'19:39:02','v','v'),
|
|
(1,NULL,NULL,NULL),
|
|
(5,'20:58:33','r','r');
|
|
CREATE TABLE t3 (
|
|
col_int_key INT DEFAULT NULL,
|
|
col_time_nokey TIME DEFAULT NULL,
|
|
col_varchar_key VARCHAR(1) DEFAULT NULL,
|
|
col_varchar_nokey VARCHAR(1) DEFAULT NULL,
|
|
KEY col_int_key (col_int_key),
|
|
KEY col_varchar_key (col_varchar_key,col_int_key)
|
|
) charset latin1;
|
|
INSERT INTO t3 VALUES (8,'04:07:22','g','g');
|
|
SET @optimizer_switch_saved= @@optimizer_switch;
|
|
SET @@optimizer_switch="derived_merge=off";
|
|
explain SELECT col_time_nokey AS x
|
|
FROM (SELECT * FROM t2) AS outr
|
|
WHERE col_varchar_nokey IN (
|
|
SELECT innr.col_varchar_key
|
|
FROM (SELECT * FROM t3) AS innr2
|
|
LEFT JOIN (SELECT * FROM t1) AS innr
|
|
ON innr2.col_varchar_key >= innr.col_varchar_key
|
|
WHERE outr.col_varchar_nokey = 'e'
|
|
)
|
|
AND outr.col_varchar_key <> 'r'
|
|
;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived4> NULL ALL NULL NULL NULL NULL 1 100.00 Using where; Start temporary
|
|
1 PRIMARY <derived5> NULL ref <auto_key0> <auto_key0> 4 const 2 100.00 NULL
|
|
1 PRIMARY <derived2> NULL ALL NULL NULL NULL NULL 20 9.00 Using where; End temporary; Using join buffer (Block Nested Loop)
|
|
5 DERIVED t1 NULL ALL NULL NULL NULL NULL 20 100.00 NULL
|
|
4 DERIVED t3 NULL system NULL NULL NULL NULL 1 100.00 NULL
|
|
2 DERIVED t2 NULL ALL NULL NULL NULL NULL 20 100.00 NULL
|
|
Warnings:
|
|
Note 1276 Field or reference 'outr.col_varchar_nokey' of SELECT #3 was resolved in SELECT #1
|
|
Note 1003 /* select#1 */ select `outr`.`col_time_nokey` AS `x` from (/* select#2 */ select `test`.`t2`.`col_int_key` AS `col_int_key`,`test`.`t2`.`col_time_nokey` AS `col_time_nokey`,`test`.`t2`.`col_varchar_key` AS `col_varchar_key`,`test`.`t2`.`col_varchar_nokey` AS `col_varchar_nokey` from `test`.`t2`) `outr` semi join ((/* select#4 */ select '8' AS `col_int_key`,'04:07:22' AS `col_time_nokey`,'g' AS `col_varchar_key`,'g' AS `col_varchar_nokey` from dual) `innr2` join (/* select#5 */ select `test`.`t1`.`col_int_key` AS `col_int_key`,`test`.`t1`.`col_time_nokey` AS `col_time_nokey`,`test`.`t1`.`col_varchar_key` AS `col_varchar_key`,`test`.`t1`.`col_varchar_nokey` AS `col_varchar_nokey` from `test`.`t1`) `innr`) where ((`innr`.`col_varchar_key` = 'e') and (`outr`.`col_varchar_nokey` = 'e') and (`outr`.`col_varchar_key` <> 'r') and (`innr2`.`col_varchar_key` >= 'e'))
|
|
SELECT col_time_nokey AS x
|
|
FROM (SELECT * FROM t2) AS outr
|
|
WHERE col_varchar_nokey IN (
|
|
SELECT innr.col_varchar_key
|
|
FROM (SELECT * FROM t3) AS innr2
|
|
LEFT JOIN (SELECT * FROM t1) AS innr
|
|
ON innr2.col_varchar_key >= innr.col_varchar_key
|
|
WHERE outr.col_varchar_nokey = 'e'
|
|
)
|
|
AND outr.col_varchar_key <> 'r'
|
|
;
|
|
x
|
|
SET @@optimizer_switch= @optimizer_switch_saved;
|
|
DROP TABLE t1, t2, t3;
|
|
#
|
|
# Bug#13354889: Crash on a derived table with more than 64 fields.
|
|
#
|
|
create table t1 (
|
|
field00 int, field01 int, field02 int, field03 int,
|
|
field04 int, field05 int, field06 int, field07 int,
|
|
field10 int, field11 int, field12 int, field13 int,
|
|
field14 int, field15 int, field16 int, field17 int,
|
|
field20 int, field21 int, field22 int, field23 int,
|
|
field24 int, field25 int, field26 int, field27 int,
|
|
field30 int, field31 int, field32 int, field33 int,
|
|
field34 int, field35 int, field36 int, field37 int,
|
|
field40 int, field41 int, field42 int, field43 int,
|
|
field44 int, field45 int, field46 int, field47 int,
|
|
field50 int, field51 int, field52 int, field53 int,
|
|
field54 int, field55 int, field56 int, field57 int,
|
|
field60 int, field61 int, field62 int, field63 int,
|
|
field64 int, field65 int, field66 int, field67 int,
|
|
field70 int, field71 int, field72 int, field73 int,
|
|
field74 int, field75 int, field76 int, field77 int,
|
|
field100 int
|
|
);
|
|
insert into t1(field100) values (1),(2),(3),(4),(5),(6),(7),(8),(9),(0);
|
|
insert into t1 select * from t1;
|
|
insert into t1 select * from t1;
|
|
insert into t1 select * from t1;
|
|
SET @optimizer_switch_saved= @@optimizer_switch;
|
|
SET @@optimizer_switch="derived_merge=off";
|
|
select tt.field100 from t1 join (select * from t1) tt where t1.field100=tt.field100
|
|
limit 1;
|
|
field100
|
|
1
|
|
Should use auto_key0 and ref access.
|
|
explain
|
|
select tt.field100 from t1 join (select * from t1) tt where t1.field100=tt.field100
|
|
limit 1;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 80 100.00 Using where
|
|
1 PRIMARY <derived2> NULL ref <auto_key0> <auto_key0> 5 test.t1.field100 8 100.00 NULL
|
|
2 DERIVED t1 NULL ALL NULL NULL NULL NULL 80 100.00 NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `tt`.`field100` AS `field100` from `test`.`t1` join (/* select#2 */ select `test`.`t1`.`field00` AS `field00`,`test`.`t1`.`field01` AS `field01`,`test`.`t1`.`field02` AS `field02`,`test`.`t1`.`field03` AS `field03`,`test`.`t1`.`field04` AS `field04`,`test`.`t1`.`field05` AS `field05`,`test`.`t1`.`field06` AS `field06`,`test`.`t1`.`field07` AS `field07`,`test`.`t1`.`field10` AS `field10`,`test`.`t1`.`field11` AS `field11`,`test`.`t1`.`field12` AS `field12`,`test`.`t1`.`field13` AS `field13`,`test`.`t1`.`field14` AS `field14`,`test`.`t1`.`field15` AS `field15`,`test`.`t1`.`field16` AS `field16`,`test`.`t1`.`field17` AS `field17`,`test`.`t1`.`field20` AS `field20`,`test`.`t1`.`field21` AS `field21`,`test`.`t1`.`field22` AS `field22`,`test`.`t1`.`field23` AS `field23`,`test`.`t1`.`field24` AS `field24`,`test`.`t1`.`field25` AS `field25`,`test`.`t1`.`field26` AS `field26`,`test`.`t1`.`field27` AS `field27`,`test`.`t1`.`field30` AS `field30`,`test`.`t1`.`field31` AS `field31`,`test`.`t1`.`field32` AS `field32`,`test`.`t1`.`field33` AS `field33`,`test`.`t1`.`field34` AS `field34`,`test`.`t1`.`field35` AS `field35`,`test`.`t1`.`field36` AS `field36`,`test`.`t1`.`field37` AS `field37`,`test`.`t1`.`field40` AS `field40`,`test`.`t1`.`field41` AS `field41`,`test`.`t1`.`field42` AS `field42`,`test`.`t1`.`field43` AS `field43`,`test`.`t1`.`field44` AS `field44`,`test`.`t1`.`field45` AS `field45`,`test`.`t1`.`field46` AS `field46`,`test`.`t1`.`field47` AS `field47`,`test`.`t1`.`field50` AS `field50`,`test`.`t1`.`field51` AS `field51`,`test`.`t1`.`field52` AS `field52`,`test`.`t1`.`field53` AS `field53`,`test`.`t1`.`field54` AS `field54`,`test`.`t1`.`field55` AS `field55`,`test`.`t1`.`field56` AS `field56`,`test`.`t1`.`field57` AS `field57`,`test`.`t1`.`field60` AS `field60`,`test`.`t1`.`field61` AS `field61`,`test`.`t1`.`field62` AS `field62`,`test`.`t1`.`field63` AS `field63`,`test`.`t1`.`field64` AS `field64`,`test`.`t1`.`field65` AS `field65`,`test`.`t1`.`field66` AS `field66`,`test`.`t1`.`field67` AS `field67`,`test`.`t1`.`field70` AS `field70`,`test`.`t1`.`field71` AS `field71`,`test`.`t1`.`field72` AS `field72`,`test`.`t1`.`field73` AS `field73`,`test`.`t1`.`field74` AS `field74`,`test`.`t1`.`field75` AS `field75`,`test`.`t1`.`field76` AS `field76`,`test`.`t1`.`field77` AS `field77`,`test`.`t1`.`field100` AS `field100` from `test`.`t1`) `tt` where (`tt`.`field100` = `test`.`t1`.`field100`) limit 1
|
|
SET @@optimizer_switch= @optimizer_switch_saved;
|
|
drop table t1;
|
|
#
|
|
#
|
|
# Bug#13390138: crash in memcpy from join_cache::write_record_data
|
|
#
|
|
CREATE TABLE t1 (
|
|
col_varchar_key varchar(1),
|
|
col_varchar_nokey varchar(1),
|
|
KEY col_varchar_key (col_varchar_key)
|
|
) charset utf8mb4 ENGINE=MyISAM;
|
|
INSERT INTO t1 VALUES ('r','r');
|
|
CREATE TABLE t2 (
|
|
col_varchar_key varchar(1),
|
|
col_varchar_nokey varchar(1),
|
|
KEY col_varchar_key (col_varchar_key)
|
|
) charset utf8mb4;
|
|
INSERT INTO t2 VALUES
|
|
(NULL,NULL),
|
|
('r','r');
|
|
CREATE TABLE t3 (
|
|
col_int_key int,
|
|
col_varchar_key varchar(1),
|
|
col_varchar_nokey varchar(1),
|
|
KEY col_int_key (col_int_key),
|
|
KEY col_varchar_key (col_varchar_key, col_int_key)
|
|
) charset utf8mb4;
|
|
INSERT INTO t3 VALUES
|
|
(9,'f','f'),
|
|
(4,'y','y'),
|
|
(3,'u','u'),
|
|
(2,'m','m'),
|
|
(NULL,NULL,NULL),
|
|
(2,'o','o'),
|
|
(NULL,'r','r'),
|
|
(6,'m','m'),
|
|
(7,'q','q'),
|
|
(6,'c','c');
|
|
SET @optimizer_switch_saved= @@optimizer_switch;
|
|
SET @@optimizer_switch="derived_merge=off";
|
|
explain SELECT grandparent.col_varchar_nokey AS g1
|
|
FROM (SELECT * FROM t3) AS grandparent
|
|
WHERE grandparent.col_varchar_nokey IN
|
|
(SELECT parent.col_varchar_key AS p1
|
|
FROM (SELECT * FROM t2) AS parent
|
|
WHERE grandparent.col_varchar_key IN (
|
|
SELECT child1.col_varchar_key AS c1
|
|
FROM (SELECT * FROM t1) AS child1
|
|
LEFT JOIN (SELECT * FROM t2) AS child2
|
|
ON child1.col_varchar_nokey <> child2.col_varchar_key
|
|
)
|
|
AND grandparent.col_int_key IS UNKNOWN
|
|
)
|
|
ORDER BY grandparent.col_varchar_nokey;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived2> NULL ref <auto_key0> <auto_key0> 5 const 2 100.00 Using where; Using index; Using temporary; Using filesort; Start temporary
|
|
1 PRIMARY <derived6> NULL ALL NULL NULL NULL NULL 1 100.00 Using where; Using join buffer (Block Nested Loop)
|
|
1 PRIMARY <derived4> NULL ref <auto_key0> <auto_key0> 7 grandparent.col_varchar_nokey 2 100.00 NULL
|
|
1 PRIMARY <derived7> NULL ALL NULL NULL NULL NULL 2 100.00 Using where; End temporary; Using join buffer (Block Nested Loop)
|
|
7 DERIVED t2 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
|
|
6 DERIVED t1 NULL system NULL NULL NULL NULL 1 100.00 NULL
|
|
4 DERIVED t2 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
|
|
2 DERIVED t3 NULL ALL NULL NULL NULL NULL 10 100.00 NULL
|
|
Warnings:
|
|
Note 1276 Field or reference 'grandparent.col_varchar_key' of SELECT #3 was resolved in SELECT #1
|
|
Note 1276 Field or reference 'grandparent.col_int_key' of SELECT #3 was resolved in SELECT #1
|
|
Note 1003 /* select#1 */ select `grandparent`.`col_varchar_nokey` AS `g1` from (/* select#2 */ select `test`.`t3`.`col_int_key` AS `col_int_key`,`test`.`t3`.`col_varchar_key` AS `col_varchar_key`,`test`.`t3`.`col_varchar_nokey` AS `col_varchar_nokey` from `test`.`t3`) `grandparent` semi join ((/* select#4 */ select `test`.`t2`.`col_varchar_key` AS `col_varchar_key`,`test`.`t2`.`col_varchar_nokey` AS `col_varchar_nokey` from `test`.`t2`) `parent` join (/* select#6 */ select 'r' AS `col_varchar_key`,'r' AS `col_varchar_nokey` from dual) `child1` left join (/* select#7 */ select `test`.`t2`.`col_varchar_key` AS `col_varchar_key`,`test`.`t2`.`col_varchar_nokey` AS `col_varchar_nokey` from `test`.`t2`) `child2` on((`child1`.`col_varchar_nokey` <> `child2`.`col_varchar_key`))) where ((`child1`.`col_varchar_key` = `grandparent`.`col_varchar_key`) and (`parent`.`col_varchar_key` = `grandparent`.`col_varchar_nokey`) and (`grandparent`.`col_int_key` is null)) order by `grandparent`.`col_varchar_nokey`
|
|
SELECT grandparent.col_varchar_nokey AS g1
|
|
FROM (SELECT * FROM t3) AS grandparent
|
|
WHERE grandparent.col_varchar_nokey IN
|
|
(SELECT parent.col_varchar_key AS p1
|
|
FROM (SELECT * FROM t2) AS parent
|
|
WHERE grandparent.col_varchar_key IN (
|
|
SELECT child1.col_varchar_key AS c1
|
|
FROM (SELECT * FROM t1) AS child1
|
|
LEFT JOIN (SELECT * FROM t2) AS child2
|
|
ON child1.col_varchar_nokey <> child2.col_varchar_key
|
|
)
|
|
AND grandparent.col_int_key IS UNKNOWN
|
|
)
|
|
ORDER BY grandparent.col_varchar_nokey;
|
|
g1
|
|
r
|
|
SET @@optimizer_switch= @optimizer_switch_saved;
|
|
DROP TABLE t1, t2, t3;
|
|
#
|
|
# Bug#13457552: Crash on instantiating a derived table in a query with
|
|
# empty result.
|
|
#
|
|
CREATE TABLE t1 ( pk INT, col_blob BLOB ) ENGINE = MyISAM;
|
|
CREATE TABLE t2 ( pk INT, col_blob BLOB ) ENGINE = InnoDB;
|
|
SET @optimizer_switch_saved= @@optimizer_switch;
|
|
SET @@optimizer_switch="derived_merge=off";
|
|
FLUSH STATUS;
|
|
SELECT pk FROM ( SELECT col_blob, pk FROM t2 ) AS A NATURAL JOIN t1;
|
|
pk
|
|
SHOW STATUS LIKE 'Created_tmp_tables';
|
|
Variable_name Value
|
|
Created_tmp_tables 0
|
|
EXPLAIN SELECT pk FROM ( SELECT col_blob, pk FROM t2 ) AS a NATURAL JOIN t1;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
2 DERIVED t2 NULL ALL NULL NULL NULL NULL 1 100.00 NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `a`.`pk` AS `pk` from (/* select#2 */ select `test`.`t2`.`col_blob` AS `col_blob`,`test`.`t2`.`pk` AS `pk` from `test`.`t2`) `a` join `test`.`t1` where (multiple equal(`a`.`col_blob`, NULL) and multiple equal(`a`.`pk`, NULL))
|
|
SET @@optimizer_switch= @optimizer_switch_saved;
|
|
DROP TABLE t1,t2;
|
|
#
|
|
# Bug #13801019 ASSERTION `0' FAILED IN CREATE_MYISAM_TMP_TABLE
|
|
#
|
|
CREATE TABLE t1 (a INT, b BLOB) ENGINE=InnoDB;
|
|
CREATE TABLE t2 (c INT);
|
|
CREATE TABLE t3 (d INT);
|
|
INSERT INTO t3 VALUES (0);
|
|
SET @optimizer_switch_saved= @@optimizer_switch;
|
|
SET @@optimizer_switch="derived_merge=off";
|
|
SELECT * FROM (SELECT * FROM t1) AS a1 RIGHT JOIN t3 LEFT JOIN t2 ON d=c ON a=c;
|
|
a b d c
|
|
NULL NULL 0 NULL
|
|
SET @@optimizer_switch= @optimizer_switch_saved;
|
|
DROP TABLE t1, t2, t3;
|
|
#
|
|
# Bug #17814492 - INVALID RESULTS FROM SUBQUERY WITH IN CLAUSE
|
|
#
|
|
CREATE TABLE t1 (
|
|
a INTEGER NOT NULL,
|
|
b VARCHAR(1000) NOT NULL,
|
|
c TEXT NOT NULL
|
|
)ENGINE=InnoDB;
|
|
INSERT INTO t1 VALUES (1, 'xxx', 'abc');
|
|
INSERT INTO t1 VALUES (2, 'yyy', 'abc');
|
|
INSERT INTO t1 SELECT a, b, c FROM t1 WHERE b='yyy';
|
|
INSERT INTO t1 SELECT a, b, c FROM t1 WHERE b='yyy';
|
|
INSERT INTO t1 SELECT a, b, c FROM t1 WHERE b='yyy';
|
|
CREATE TABLE t2 (
|
|
a INTEGER NOT NULL
|
|
)ENGINE=InnoDB;
|
|
INSERT INTO t2 VALUES (1), (2);
|
|
ANALYZE TABLE t1,t2;
|
|
Table Op Msg_type Msg_text
|
|
test.t1 analyze status OK
|
|
test.t2 analyze status OK
|
|
SET @save_optimizer_switch= @@optimizer_switch;
|
|
SET @@SESSION.optimizer_switch="index_condition_pushdown=on";
|
|
EXPLAIN SELECT a1.a, a1.b, a1.c FROM (SELECT a, b, c FROM t1 ) a1
|
|
JOIN t2 ON a1.a=t2.a WHERE a1.b='xxx';
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 9 11.11 Using where
|
|
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t1`.`c` AS `c` from `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`a` = `test`.`t1`.`a`) and (`test`.`t1`.`b` = 'xxx'))
|
|
SELECT a1.a, a1.b, a1.c FROM (SELECT a, b, c FROM t1 ) a1
|
|
JOIN t2 ON a1.a=t2.a WHERE a1.b='xxx';
|
|
a b c
|
|
1 xxx abc
|
|
SET @@SESSION.optimizer_switch= @save_optimizer_switch;
|
|
DROP TABLE t2, t1;
|
|
# End of test for Bug #17814492
|
|
#
|
|
# WL#5275 Process subqueries in FROM clause in the same way as view
|
|
#
|
|
CREATE TABLE t1(a INTEGER, b INTEGER);
|
|
CREATE TABLE t2(a INTEGER, b INTEGER);
|
|
INSERT INTO t1 VALUES(1, 10), (2, 20);
|
|
INSERT INTO t2 VALUES(1, 100), (2, 200);
|
|
SELECT *
|
|
FROM t1 JOIN (SELECT * FROM t2) AS dt ON t1.a=dt.a;
|
|
a b a b
|
|
1 10 1 100
|
|
2 20 2 200
|
|
explain SELECT *
|
|
FROM t1 JOIN (SELECT * FROM t2) AS dt ON t1.a=dt.a;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
|
|
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t1` join `test`.`t2` where (`test`.`t2`.`a` = `test`.`t1`.`a`)
|
|
SELECT *
|
|
FROM t1, (SELECT * FROM t2) AS dt WHERE t1.a=dt.a;
|
|
a b a b
|
|
1 10 1 100
|
|
2 20 2 200
|
|
explain SELECT *
|
|
FROM t1, (SELECT * FROM t2) AS dt WHERE t1.a=dt.a;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
|
|
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t1` join `test`.`t2` where (`test`.`t2`.`a` = `test`.`t1`.`a`)
|
|
SELECT *
|
|
FROM (t1 JOIN t2 ON t1.a=t2.a) JOIN (SELECT * FROM t2) AS dt ON t1.a=dt.a;
|
|
a b a b a b
|
|
1 10 1 100 1 100
|
|
2 20 2 200 2 200
|
|
explain SELECT *
|
|
FROM (t1 JOIN t2 ON t1.a=t2.a) JOIN (SELECT * FROM t2) AS dt ON t1.a=dt.a;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
|
|
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; Using join buffer (Block Nested Loop)
|
|
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t1` join `test`.`t2` join `test`.`t2` where ((`test`.`t2`.`a` = `test`.`t1`.`a`) and (`test`.`t2`.`a` = `test`.`t1`.`a`))
|
|
SELECT *
|
|
FROM t1 JOIN (SELECT t2.a, t2.b FROM t1 JOIN t2 USING (a)) AS dt ON t1.a=dt.a;
|
|
a b a b
|
|
1 10 1 100
|
|
2 20 2 200
|
|
explain SELECT *
|
|
FROM t1 JOIN (SELECT t2.a, t2.b FROM t1 JOIN t2 USING (a)) AS dt ON t1.a=dt.a;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; Using join buffer (Block Nested Loop)
|
|
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t1` join `test`.`t1` join `test`.`t2` where ((`test`.`t1`.`a` = `test`.`t1`.`a`) and (`test`.`t2`.`a` = `test`.`t1`.`a`))
|
|
SELECT *
|
|
FROM (t1 JOIN t2 USING (a))
|
|
JOIN
|
|
(SELECT t2.a, t2.b FROM t1 JOIN t2 USING (a)) AS dt
|
|
ON t1.a=dt.a;
|
|
a b b a b
|
|
1 10 100 1 100
|
|
2 20 200 2 200
|
|
explain SELECT *
|
|
FROM (t1 JOIN t2 USING (a))
|
|
JOIN
|
|
(SELECT t2.a, t2.b FROM t1 JOIN t2 USING (a)) AS dt
|
|
ON t1.a=dt.a;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
|
|
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; Using join buffer (Block Nested Loop)
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; Using join buffer (Block Nested Loop)
|
|
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t1` join `test`.`t2` join `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`a` = `test`.`t1`.`a`) and (`test`.`t1`.`a` = `test`.`t1`.`a`) and (`test`.`t2`.`a` = `test`.`t1`.`a`))
|
|
SELECT *
|
|
FROM (t1 JOIN t2 USING (a))
|
|
JOIN
|
|
(SELECT t1.a, t2.b FROM t1 JOIN t2 USING (a)) AS dt1
|
|
ON t1.a=dt1.a AND t2.b=dt1.b
|
|
JOIN
|
|
(SELECT t2.a, t2.b FROM t1 JOIN t2 USING (a)) AS dt2
|
|
ON dt1.a=dt2.a;
|
|
a b b a b a b
|
|
1 10 100 1 100 1 100
|
|
2 20 200 2 200 2 200
|
|
explain SELECT *
|
|
FROM (t1 JOIN t2 USING (a))
|
|
JOIN
|
|
(SELECT t1.a, t2.b FROM t1 JOIN t2 USING (a)) AS dt1
|
|
ON t1.a=dt1.a AND t2.b=dt1.b
|
|
JOIN
|
|
(SELECT t2.a, t2.b FROM t1 JOIN t2 USING (a)) AS dt2
|
|
ON dt1.a=dt2.a;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
|
|
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; Using join buffer (Block Nested Loop)
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; Using join buffer (Block Nested Loop)
|
|
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; Using join buffer (Block Nested Loop)
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; Using join buffer (Block Nested Loop)
|
|
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t1` join `test`.`t2` join `test`.`t1` join `test`.`t2` join `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`b` = `test`.`t2`.`b`) and (`test`.`t2`.`a` = `test`.`t1`.`a`) and (`test`.`t1`.`a` = `test`.`t1`.`a`) and (`test`.`t2`.`a` = `test`.`t1`.`a`) and (`test`.`t1`.`a` = `test`.`t1`.`a`) and (`test`.`t2`.`a` = `test`.`t1`.`a`))
|
|
SELECT *
|
|
FROM t1 JOIN (SELECT t2.a, t2.b FROM t1 JOIN t2 USING (a)
|
|
WHERE t1.b > 15) AS dt ON t1.a=dt.a;
|
|
a b a b
|
|
2 20 2 200
|
|
explain SELECT *
|
|
FROM t1 JOIN (SELECT t2.a, t2.b FROM t1 JOIN t2 USING (a)
|
|
WHERE t1.b > 15) AS dt ON t1.a=dt.a;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 50.00 Using where
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; Using join buffer (Block Nested Loop)
|
|
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t1` join `test`.`t1` join `test`.`t2` where ((`test`.`t1`.`a` = `test`.`t1`.`a`) and (`test`.`t2`.`a` = `test`.`t1`.`a`) and (`test`.`t1`.`b` > 15))
|
|
SELECT *
|
|
FROM t1 JOIN (SELECT * FROM t2
|
|
WHERE a IN (SELECT a FROM t1)) AS dt ON t1.a=dt.a;
|
|
a b a b
|
|
1 10 1 100
|
|
2 20 2 200
|
|
explain SELECT *
|
|
FROM t1 JOIN (SELECT * FROM t2
|
|
WHERE a IN (SELECT a FROM t1)) AS dt ON t1.a=dt.a;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
|
|
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; Using join buffer (Block Nested Loop)
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; FirstMatch(t2); Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t1` join `test`.`t2` semi join (`test`.`t1`) where ((`test`.`t2`.`a` = `test`.`t1`.`a`) and (`test`.`t1`.`a` = `test`.`t1`.`a`))
|
|
SELECT *
|
|
FROM t1 JOIN (SELECT * FROM t2 UNION SELECT * FROM t2) AS dt ON t1.a=dt.a;
|
|
a b a b
|
|
1 10 1 100
|
|
2 20 2 200
|
|
explain SELECT *
|
|
FROM t1 JOIN (SELECT * FROM t2 UNION SELECT * FROM t2) AS dt ON t1.a=dt.a;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 2 100.00 Using where
|
|
1 PRIMARY <derived2> NULL ref <auto_key1> <auto_key1> 5 test.t1.a 2 100.00 NULL
|
|
2 DERIVED t2 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
|
|
3 UNION t2 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
|
|
NULL UNION RESULT <union2,3> NULL ALL NULL NULL NULL NULL NULL NULL Using temporary
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`dt`.`a` AS `a`,`dt`.`b` AS `b` from `test`.`t1` join (/* select#2 */ select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` union /* select#3 */ select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2`) `dt` where (`dt`.`a` = `test`.`t1`.`a`)
|
|
SELECT *
|
|
FROM t1 JOIN (SELECT * FROM t2 UNION ALL SELECT * FROM t2) AS dt ON t1.a=dt.a;
|
|
a b a b
|
|
1 10 1 100
|
|
1 10 1 100
|
|
2 20 2 200
|
|
2 20 2 200
|
|
explain SELECT *
|
|
FROM t1 JOIN (SELECT * FROM t2 UNION ALL SELECT * FROM t2) AS dt ON t1.a=dt.a;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 2 100.00 Using where
|
|
1 PRIMARY <derived2> NULL ref <auto_key0> <auto_key0> 5 test.t1.a 2 100.00 NULL
|
|
2 DERIVED t2 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
|
|
3 UNION t2 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`dt`.`a` AS `a`,`dt`.`b` AS `b` from `test`.`t1` join (/* select#2 */ select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` union all /* select#3 */ select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2`) `dt` where (`dt`.`a` = `test`.`t1`.`a`)
|
|
SELECT *
|
|
FROM t1 JOIN (SELECT DISTINCT a, b FROM t2) AS dt ON t1.a=dt.a;
|
|
a b a b
|
|
1 10 1 100
|
|
2 20 2 200
|
|
explain SELECT *
|
|
FROM t1 JOIN (SELECT DISTINCT a, b FROM t2) AS dt ON t1.a=dt.a;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 2 100.00 Using where
|
|
1 PRIMARY <derived2> NULL ref <auto_key0> <auto_key0> 5 test.t1.a 2 100.00 NULL
|
|
2 DERIVED t2 NULL ALL NULL NULL NULL NULL 2 100.00 Using temporary
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`dt`.`a` AS `a`,`dt`.`b` AS `b` from `test`.`t1` join (/* select#2 */ select distinct `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2`) `dt` where (`dt`.`a` = `test`.`t1`.`a`)
|
|
SELECT *
|
|
FROM t1 JOIN (SELECT SUM(a) AS a, SUM(b) AS b FROM t2) AS dt ON t1.a=dt.a;
|
|
a b a b
|
|
explain SELECT *
|
|
FROM t1 JOIN (SELECT SUM(a) AS a, SUM(b) AS b FROM t2) AS dt ON t1.a=dt.a;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived2> NULL system NULL NULL NULL NULL 1 100.00 NULL
|
|
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 2 50.00 Using where
|
|
2 DERIVED t2 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,'3' AS `a`,'300' AS `b` from `test`.`t1` where (`test`.`t1`.`a` = '3')
|
|
SELECT *
|
|
FROM t1 JOIN (SELECT a, SUM(b) AS b FROM t2 GROUP BY a) AS dt ON t1.a=dt.a;
|
|
a b a b
|
|
1 10 1 100
|
|
2 20 2 200
|
|
explain SELECT *
|
|
FROM t1 JOIN (SELECT a, SUM(b) AS b FROM t2 GROUP BY a) AS dt ON t1.a=dt.a;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 2 100.00 Using where
|
|
1 PRIMARY <derived2> NULL ref <auto_key0> <auto_key0> 5 test.t1.a 2 100.00 NULL
|
|
2 DERIVED t2 NULL ALL NULL NULL NULL NULL 2 100.00 Using temporary
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`dt`.`a` AS `a`,`dt`.`b` AS `b` from `test`.`t1` join (/* select#2 */ select `test`.`t2`.`a` AS `a`,sum(`test`.`t2`.`b`) AS `b` from `test`.`t2` group by `test`.`t2`.`a`) `dt` where (`dt`.`a` = `test`.`t1`.`a`)
|
|
SELECT *
|
|
FROM t1 JOIN (SELECT 1 AS a FROM t2 HAVING COUNT(*) > 1) AS dt ON t1.a=dt.a;
|
|
a b a
|
|
1 10 1
|
|
explain SELECT *
|
|
FROM t1 JOIN (SELECT 1 AS a FROM t2 HAVING COUNT(*) > 1) AS dt ON t1.a=dt.a;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,NULL AS `a` from `test`.`t1` join (/* select#2 */ select 1 AS `a` from `test`.`t2` having (count(0) > 1)) `dt` where multiple equal(`test`.`t1`.`a`, NULL)
|
|
SELECT *
|
|
FROM t1 JOIN (SELECT * FROM t2 LIMIT 1) AS dt ON t1.a=dt.a;
|
|
a b a b
|
|
1 10 1 100
|
|
explain SELECT *
|
|
FROM t1 JOIN (SELECT * FROM t2 LIMIT 1) AS dt ON t1.a=dt.a;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived2> NULL system NULL NULL NULL NULL 1 100.00 NULL
|
|
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 2 50.00 Using where
|
|
2 DERIVED t2 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,'1' AS `a`,'100' AS `b` from `test`.`t1` where (`test`.`t1`.`a` = '1')
|
|
SELECT *
|
|
FROM t1 JOIN (SELECT * FROM t2 LIMIT 2 OFFSET 1) AS dt ON t1.a=dt.a;
|
|
a b a b
|
|
2 20 2 200
|
|
explain SELECT *
|
|
FROM t1 JOIN (SELECT * FROM t2 LIMIT 2 OFFSET 1) AS dt ON t1.a=dt.a;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 2 100.00 Using where
|
|
1 PRIMARY <derived2> NULL ref <auto_key0> <auto_key0> 5 test.t1.a 2 100.00 NULL
|
|
2 DERIVED t2 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`dt`.`a` AS `a`,`dt`.`b` AS `b` from `test`.`t1` join (/* select#2 */ select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` limit 1,2) `dt` where (`dt`.`a` = `test`.`t1`.`a`)
|
|
SELECT *
|
|
FROM t1 JOIN (SELECT 1 AS a) AS dt ON t1.a=dt.a;
|
|
a b a
|
|
1 10 1
|
|
explain SELECT *
|
|
FROM t1 JOIN (SELECT 1 AS a) AS dt ON t1.a=dt.a;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived2> NULL system NULL NULL NULL NULL 1 100.00 NULL
|
|
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 2 50.00 Using where
|
|
2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,'1' AS `a` from `test`.`t1` where (`test`.`t1`.`a` = '1')
|
|
SELECT *
|
|
FROM t1 JOIN (SELECT a, b, @c:= a+b FROM t2) AS dt ON t1.a=dt.a;
|
|
a b a b @c:= a+b
|
|
1 10 1 100 101
|
|
2 20 2 200 202
|
|
Warnings:
|
|
Warning 1287 Setting user variables within expressions is deprecated and will be removed in a future release. Consider alternatives: 'SET variable=expression, ...', or 'SELECT expression(s) INTO variables(s)'.
|
|
explain SELECT *
|
|
FROM t1 JOIN (SELECT a, b, @c:= a+b FROM t2) AS dt ON t1.a=dt.a;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 2 100.00 Using where
|
|
1 PRIMARY <derived2> NULL ref <auto_key0> <auto_key0> 5 test.t1.a 2 100.00 NULL
|
|
2 DERIVED t2 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
|
|
Warnings:
|
|
Warning 1287 Setting user variables within expressions is deprecated and will be removed in a future release. Consider alternatives: 'SET variable=expression, ...', or 'SELECT expression(s) INTO variables(s)'.
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`dt`.`a` AS `a`,`dt`.`b` AS `b`,`dt`.`@c:= a+b` AS `@c:= a+b` from `test`.`t1` join (/* select#2 */ select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,(@c:=(`test`.`t2`.`a` + `test`.`t2`.`b`)) AS `@c:= a+b` from `test`.`t2`) `dt` where (`dt`.`a` = `test`.`t1`.`a`)
|
|
SELECT *
|
|
FROM (SELECT * FROM t2 ORDER BY t2.a) AS dt;
|
|
a b
|
|
1 100
|
|
2 200
|
|
explain SELECT *
|
|
FROM (SELECT * FROM t2 ORDER BY t2.a) AS dt;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 2 100.00 Using filesort
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` order by `test`.`t2`.`a`
|
|
SELECT *
|
|
FROM (SELECT * FROM t2 ORDER BY t2.a DESC) AS dt;
|
|
a b
|
|
2 200
|
|
1 100
|
|
explain SELECT *
|
|
FROM (SELECT * FROM t2 ORDER BY t2.a DESC) AS dt;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 2 100.00 Using filesort
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` order by `test`.`t2`.`a` desc
|
|
SELECT *
|
|
FROM (SELECT * FROM t2 ORDER BY t2.a) AS dt
|
|
WHERE dt.a > 0;
|
|
a b
|
|
1 100
|
|
2 200
|
|
explain SELECT *
|
|
FROM (SELECT * FROM t2 ORDER BY t2.a) AS dt
|
|
WHERE dt.a > 0;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; Using filesort
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`a` > 0) order by `test`.`t2`.`a`
|
|
SELECT *
|
|
FROM (SELECT * FROM t2 ORDER BY t2.a DESC) AS dt
|
|
WHERE dt.a > 0;
|
|
a b
|
|
2 200
|
|
1 100
|
|
explain SELECT *
|
|
FROM (SELECT * FROM t2 ORDER BY t2.a DESC) AS dt
|
|
WHERE dt.a > 0;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; Using filesort
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`a` > 0) order by `test`.`t2`.`a` desc
|
|
SELECT *
|
|
FROM t1 JOIN (SELECT * FROM t2 ORDER BY t2.a) AS dt ON t1.a=dt.a;
|
|
a b a b
|
|
1 10 1 100
|
|
2 20 2 200
|
|
explain SELECT *
|
|
FROM t1 JOIN (SELECT * FROM t2 ORDER BY t2.a) AS dt ON t1.a=dt.a;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
|
|
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t1` join `test`.`t2` where (`test`.`t2`.`a` = `test`.`t1`.`a`)
|
|
SELECT *
|
|
FROM t1 JOIN (SELECT * FROM t2 ORDER BY t2.a DESC) AS dt ON t1.a=dt.a;
|
|
a b a b
|
|
1 10 1 100
|
|
2 20 2 200
|
|
explain SELECT *
|
|
FROM t1 JOIN (SELECT * FROM t2 ORDER BY t2.a DESC) AS dt ON t1.a=dt.a;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
|
|
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t1` join `test`.`t2` where (`test`.`t2`.`a` = `test`.`t1`.`a`)
|
|
SELECT dt.a, COUNT(*)
|
|
FROM (SELECT * FROM t2 ORDER BY t2.a) AS dt
|
|
GROUP BY dt.a;
|
|
a COUNT(*)
|
|
1 1
|
|
2 1
|
|
explain SELECT dt.a, COUNT(*)
|
|
FROM (SELECT * FROM t2 ORDER BY t2.a) AS dt
|
|
GROUP BY dt.a;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 2 100.00 Using temporary
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t2`.`a` AS `a`,count(0) AS `COUNT(*)` from `test`.`t2` group by `test`.`t2`.`a`
|
|
SELECT dt.a, COUNT(*)
|
|
FROM (SELECT * FROM t2 ORDER BY t2.a DESC) AS dt
|
|
GROUP BY dt.a;
|
|
a COUNT(*)
|
|
1 1
|
|
2 1
|
|
explain SELECT dt.a, COUNT(*)
|
|
FROM (SELECT * FROM t2 ORDER BY t2.a DESC) AS dt
|
|
GROUP BY dt.a;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 2 100.00 Using temporary
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t2`.`a` AS `a`,count(0) AS `COUNT(*)` from `test`.`t2` group by `test`.`t2`.`a`
|
|
SELECT COUNT(*)
|
|
FROM (SELECT * FROM t2 ORDER BY t2.a) AS dt;
|
|
COUNT(*)
|
|
2
|
|
explain SELECT COUNT(*)
|
|
FROM (SELECT * FROM t2 ORDER BY t2.a) AS dt;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select count(0) AS `COUNT(*)` from `test`.`t2`
|
|
SELECT COUNT(*)
|
|
FROM (SELECT * FROM t2 ORDER BY t2.a DESC) AS dt;
|
|
COUNT(*)
|
|
2
|
|
explain SELECT COUNT(*)
|
|
FROM (SELECT * FROM t2 ORDER BY t2.a DESC) AS dt;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select count(0) AS `COUNT(*)` from `test`.`t2`
|
|
SELECT DISTINCT *
|
|
FROM (SELECT * FROM t2 ORDER BY t2.a) AS dt;
|
|
a b
|
|
1 100
|
|
2 200
|
|
explain SELECT DISTINCT *
|
|
FROM (SELECT * FROM t2 ORDER BY t2.a) AS dt;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 2 100.00 Using temporary
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select distinct `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2`
|
|
SELECT DISTINCT *
|
|
FROM (SELECT * FROM t2 ORDER BY t2.a DESC) AS dt;
|
|
a b
|
|
1 100
|
|
2 200
|
|
explain SELECT DISTINCT *
|
|
FROM (SELECT * FROM t2 ORDER BY t2.a DESC) AS dt;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 2 100.00 Using temporary
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select distinct `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2`
|
|
SELECT *
|
|
FROM t1 JOIN (SELECT * FROM t2 ORDER BY t2.a) AS dt ON t1.a=dt.a
|
|
ORDER BY t1.b;
|
|
a b a b
|
|
1 10 1 100
|
|
2 20 2 200
|
|
explain SELECT *
|
|
FROM t1 JOIN (SELECT * FROM t2 ORDER BY t2.a) AS dt ON t1.a=dt.a
|
|
ORDER BY t1.b;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 100.00 Using temporary; Using filesort
|
|
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t1` join `test`.`t2` where (`test`.`t2`.`a` = `test`.`t1`.`a`) order by `test`.`t1`.`b`
|
|
SELECT *
|
|
FROM t1 JOIN (SELECT * FROM t2 ORDER BY t2.a DESC) AS dt ON t1.a=dt.a
|
|
ORDER BY t1.b;
|
|
a b a b
|
|
1 10 1 100
|
|
2 20 2 200
|
|
explain SELECT *
|
|
FROM t1 JOIN (SELECT * FROM t2 ORDER BY t2.a DESC) AS dt ON t1.a=dt.a
|
|
ORDER BY t1.b;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 100.00 Using temporary; Using filesort
|
|
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t1` join `test`.`t2` where (`test`.`t2`.`a` = `test`.`t1`.`a`) order by `test`.`t1`.`b`
|
|
SELECT *
|
|
FROM t1 JOIN (SELECT a, (SELECT COUNT(*) FROM t1) AS b FROM t2) AS dt
|
|
ON t1.a=dt.a;
|
|
a b a b
|
|
1 10 1 2
|
|
2 20 2 2
|
|
explain SELECT *
|
|
FROM t1 JOIN (SELECT a, (SELECT COUNT(*) FROM t1) AS b FROM t2) AS dt
|
|
ON t1.a=dt.a;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
|
|
1 PRIMARY t2 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; Using join buffer (Block Nested Loop)
|
|
3 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,(/* select#3 */ select count(0) from `test`.`t1`) AS `b` from `test`.`t1` join `test`.`t2` where (`test`.`t2`.`a` = `test`.`t1`.`a`)
|
|
SELECT *
|
|
FROM t1 JOIN (SELECT a, (SELECT b) AS b FROM t2) AS dt ON t1.a=dt.a;
|
|
a b a b
|
|
1 10 1 100
|
|
2 20 2 200
|
|
explain SELECT *
|
|
FROM t1 JOIN (SELECT a, (SELECT b) AS b FROM t2) AS dt ON t1.a=dt.a;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 2 100.00 Using where
|
|
1 PRIMARY <derived2> NULL ref <auto_key0> <auto_key0> 5 test.t1.a 2 100.00 NULL
|
|
2 DERIVED t2 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
|
|
3 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
Warnings:
|
|
Note 1276 Field or reference 'test.t2.b' of SELECT #3 was resolved in SELECT #2
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`dt`.`a` AS `a`,`dt`.`b` AS `b` from `test`.`t1` join (/* select#2 */ select `test`.`t2`.`a` AS `a`,(/* select#3 */ select `test`.`t2`.`b`) AS `b` from `test`.`t2`) `dt` where (`dt`.`a` = `test`.`t1`.`a`)
|
|
SET @optimizer_switch_saved= @@optimizer_switch;
|
|
SET @@optimizer_switch="derived_merge=off";
|
|
SELECT *
|
|
FROM (t1 JOIN t2 USING (a))
|
|
JOIN (SELECT t2.a, t2.b FROM t1 JOIN t2 USING (a)) AS dt
|
|
ON t1.a=dt.a;
|
|
a b b a b
|
|
1 10 100 1 100
|
|
2 20 200 2 200
|
|
explain SELECT *
|
|
FROM (t1 JOIN t2 USING (a))
|
|
JOIN (SELECT t2.a, t2.b FROM t1 JOIN t2 USING (a)) AS dt
|
|
ON t1.a=dt.a;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 2 100.00 Using where
|
|
1 PRIMARY t2 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; Using join buffer (Block Nested Loop)
|
|
1 PRIMARY <derived2> NULL ref <auto_key0> <auto_key0> 5 test.t1.a 2 100.00 NULL
|
|
2 DERIVED t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
|
|
2 DERIVED t2 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`b` AS `b`,`dt`.`a` AS `a`,`dt`.`b` AS `b` from `test`.`t1` join `test`.`t2` join (/* select#2 */ select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t1` join `test`.`t2` where (`test`.`t2`.`a` = `test`.`t1`.`a`)) `dt` where ((`test`.`t2`.`a` = `test`.`t1`.`a`) and (`dt`.`a` = `test`.`t1`.`a`))
|
|
SET @@optimizer_switch="derived_merge=on";
|
|
SELECT *
|
|
FROM (t1 JOIN t2 USING (a))
|
|
JOIN (SELECT t2.a, t2.b FROM t1 JOIN t2 USING (a)) AS dt
|
|
ON t1.a=dt.a;
|
|
a b b a b
|
|
1 10 100 1 100
|
|
2 20 200 2 200
|
|
explain SELECT *
|
|
FROM (t1 JOIN t2 USING (a))
|
|
JOIN (SELECT t2.a, t2.b FROM t1 JOIN t2 USING (a)) AS dt
|
|
ON t1.a=dt.a;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
|
|
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; Using join buffer (Block Nested Loop)
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; Using join buffer (Block Nested Loop)
|
|
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t1` join `test`.`t2` join `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`a` = `test`.`t1`.`a`) and (`test`.`t1`.`a` = `test`.`t1`.`a`) and (`test`.`t2`.`a` = `test`.`t1`.`a`))
|
|
SET @@optimizer_switch= @optimizer_switch_saved;
|
|
INSERT INTO (SELECT * FROM t1) AS dt VALUES(9, 99);
|
|
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '(SELECT * FROM t1) AS dt VALUES(9, 99)' at line 1
|
|
INSERT INTO (SELECT * FROM t1) AS dt SELECT 9, 99;
|
|
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '(SELECT * FROM t1) AS dt SELECT 9, 99' at line 1
|
|
UPDATE (SELECT * FROM t1) AS dt SET b=b+1;
|
|
ERROR HY000: The target table dt of the UPDATE is not updatable
|
|
UPDATE t1 JOIN (SELECT * FROM t2) AS dt ON t1.a=dt.a SET dt.b=dt.b+1;
|
|
ERROR HY000: The target table t2 of the UPDATE is not updatable
|
|
DELETE FROM (SELECT * FROM t1) AS dt WHERE a=1;
|
|
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '(SELECT * FROM t1) AS dt WHERE a=1' at line 1
|
|
DELETE dt FROM t1 JOIN (SELECT * FROM t2) AS dt ON t1.a=dt.a WHERE t1.a=1;
|
|
ERROR HY000: The target table dt of the DELETE is not updatable
|
|
UPDATE t1 JOIN (SELECT * FROM t2) AS dt ON t1.a=dt.a SET t1.b=t1.b+1;
|
|
DELETE t1 FROM t1 JOIN (SELECT * FROM t2) AS dt ON t1.a=dt.a WHERE t1.a=1;
|
|
SELECT * FROM t1;
|
|
a b
|
|
2 21
|
|
SELECT * FROM t2;
|
|
a b
|
|
1 100
|
|
2 200
|
|
DROP TABLE t1, t2;
|
|
# Bug#19791944: Assert fail in subselect_hash_sj_engine::exec
|
|
CREATE TABLE t1 (
|
|
pk int NOT NULL,
|
|
col_int_key int NOT NULL,
|
|
col_varchar_key varchar(1) NOT NULL,
|
|
PRIMARY KEY (pk),
|
|
KEY col_varchar_key (col_varchar_key, col_int_key)
|
|
) charset utf8mb4;
|
|
INSERT INTO t1 VALUES
|
|
(1,4,'j'), (2,6,'v'), (3,3,'c'), (4,5,'m'), (5,3,'d'), (6,246,'d'), (7,2,'y'), (8,9,'t'),
|
|
(9,3,'d'), (10,8,'s'), (11,1,'r'), (12,8,'m'), (13,8,'b'), (14,5,'x'), (15,7,'g'), (16,5,'p'),
|
|
(17,1,'q'), (18,6,'w'), (19,2,'d'), (20,9,'e');
|
|
CREATE TABLE t2 (
|
|
pk int NOT NULL,
|
|
col_int_nokey int NOT NULL,
|
|
col_int_key int NOT NULL,
|
|
col_date_key date NOT NULL,
|
|
col_varchar_nokey varchar(1) NOT NULL,
|
|
PRIMARY KEY (pk),
|
|
KEY col_int_key (col_int_key),
|
|
KEY col_date_key (col_date_key)
|
|
) charset utf8mb4;
|
|
INSERT INTO t2 VALUES (1,1,7,'1900-01-01','k');
|
|
CREATE TABLE t3 (
|
|
pk int NOT NULL ,
|
|
col_date_nokey date NOT NULL,
|
|
col_varchar_nokey varchar(1) NOT NULL,
|
|
PRIMARY KEY (pk)
|
|
) charset utf8mb4;
|
|
INSERT INTO t3 VALUES (10,'1900-01-01','b');
|
|
EXPLAIN SELECT outr.col_date_key AS x
|
|
FROM (SELECT * FROM t1) AS outr2 LEFT JOIN (SELECT * FROM t2) AS outr
|
|
ON outr2.col_varchar_key = outr.col_varchar_nokey
|
|
WHERE (outr.col_int_key, outr.col_int_key) IN
|
|
(SELECT innr.pk AS x, innr.pk AS y
|
|
FROM (SELECT * FROM t3) AS innr
|
|
WHERE innr.col_date_nokey IS NOT NULL XOR
|
|
innr.col_varchar_nokey > 'p'
|
|
ORDER BY innr.col_date_nokey) XOR
|
|
(outr.col_int_nokey < 2 OR
|
|
NOT outr.col_int_key IS NULL)
|
|
ORDER BY outr.col_int_key,
|
|
outr.pk;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 NULL index NULL col_varchar_key 10 NULL 20 100.00 Using index; Using temporary; Using filesort
|
|
1 PRIMARY t2 NULL ALL NULL NULL NULL NULL 1 100.00 Using where; Using join buffer (Block Nested Loop)
|
|
4 DEPENDENT SUBQUERY t3 NULL system PRIMARY NULL NULL NULL 1 100.00 NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t2`.`col_date_key` AS `x` from `test`.`t1` left join (`test`.`t2`) on((`test`.`t2`.`col_varchar_nokey` = `test`.`t1`.`col_varchar_key`)) where (<in_optimizer>((`test`.`t2`.`col_int_key`,`test`.`t2`.`col_int_key`),<exists>(/* select#4 */ select 1,1 from dual where ((true xor ('b' > 'p')) and <if>(outer_field_is_not_null, ((<cache>(`test`.`t2`.`col_int_key`) = '10') or ('10' is null)), true) and <if>(outer_field_is_not_null, ((<cache>(`test`.`t2`.`col_int_key`) = '10') or ('10' is null)), true)) having (<if>(outer_field_is_not_null, <is_not_null_test>('10'), true) and <if>(outer_field_is_not_null, <is_not_null_test>('10'), true)))) xor ((`test`.`t2`.`col_int_nokey` < 2) or (`test`.`t2`.`col_int_key` is not null))) order by `test`.`t2`.`col_int_key`,`test`.`t2`.`pk`
|
|
SELECT outr.col_date_key AS x
|
|
FROM (SELECT * FROM t1) AS outr2 LEFT JOIN (SELECT * FROM t2) AS outr
|
|
ON outr2.col_varchar_key = outr.col_varchar_nokey
|
|
WHERE (outr.col_int_key, outr.col_int_key) IN
|
|
(SELECT innr.pk AS x, innr.pk AS y
|
|
FROM (SELECT * FROM t3) AS innr
|
|
WHERE innr.col_date_nokey IS NOT NULL XOR
|
|
innr.col_varchar_nokey > 'p'
|
|
ORDER BY innr.col_date_nokey) XOR
|
|
(outr.col_int_nokey < 2 OR
|
|
NOT outr.col_int_key IS NULL)
|
|
ORDER BY outr.col_int_key,
|
|
outr.pk;
|
|
x
|
|
DROP TABLE t1, t2, t3;
|
|
# Bug#20087645: Assert fail in subselect_hash_sj_engine::exec
|
|
CREATE TABLE t1 (
|
|
pk int NOT NULL,
|
|
col_int_nokey int NOT NULL,
|
|
col_varchar_key varchar(1) NOT NULL,
|
|
PRIMARY KEY (pk),
|
|
KEY col_varchar_key(col_varchar_key)
|
|
) charset utf8mb4 ENGINE=InnoDB;
|
|
INSERT INTO t1 VALUES
|
|
(10,1,'v'), (11,7,'s'), (12,4,'l'), (13,7,'y'), (14,0,'c'), (15,2,'i');
|
|
CREATE TABLE t2 (
|
|
pk int NOT NULL,
|
|
col_varchar_key varchar(1) NOT NULL,
|
|
col_varchar_nokey varchar(1) NOT NULL,
|
|
PRIMARY KEY (pk),
|
|
KEY col_varchar_key (col_varchar_key)
|
|
) charset utf8mb4 ENGINE=InnoDB;
|
|
INSERT INTO t2 VALUES (1,'k','k');
|
|
CREATE TABLE t3 (
|
|
pk int NOT NULL,
|
|
col_varchar_nokey varchar(1) NOT NULL,
|
|
PRIMARY KEY (pk)
|
|
) charset utf8mb4 ENGINE=InnoDB;
|
|
INSERT INTO t3 VALUES
|
|
(1,'j'), (2,'v'), (3,'c'), (4,'m'), (5,'d');
|
|
ANALYZE TABLE t1, t2, t3;
|
|
Table Op Msg_type Msg_text
|
|
test.t1 analyze status OK
|
|
test.t2 analyze status OK
|
|
test.t3 analyze status OK
|
|
EXPLAIN SELECT table1.pk
|
|
FROM (SELECT * FROM t1) AS table1
|
|
LEFT JOIN
|
|
(SELECT * FROM t1) AS table2
|
|
RIGHT OUTER JOIN
|
|
(SELECT * FROM t2) AS table3
|
|
ON table3.col_varchar_nokey = table2.col_varchar_key
|
|
ON table3.pk = table2.col_int_nokey
|
|
WHERE table3.col_varchar_key <> ALL
|
|
(SELECT sq1_t1.col_varchar_nokey AS sq1_field1
|
|
FROM (SELECT * FROM t3) AS sq1_t1
|
|
LEFT OUTER JOIN
|
|
(SELECT * FROM t1) AS sq1_t2
|
|
ON sq1_t2.col_varchar_key = sq1_t1.col_varchar_nokey
|
|
) OR
|
|
table1.pk = 96;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 NULL index PRIMARY col_varchar_key 6 NULL 6 100.00 Using index
|
|
1 PRIMARY t2 NULL ALL PRIMARY NULL NULL NULL 1 100.00 Using where
|
|
1 PRIMARY t1 NULL ref col_varchar_key col_varchar_key 6 test.t2.col_varchar_nokey 1 100.00 Using where
|
|
5 SUBQUERY t3 NULL ALL NULL NULL NULL NULL 5 100.00 NULL
|
|
5 SUBQUERY t1 NULL ref col_varchar_key col_varchar_key 6 test.t3.col_varchar_nokey 1 100.00 Using index
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`pk` AS `pk` from `test`.`t1` left join (`test`.`t2` join `test`.`t1`) on(((`test`.`t1`.`col_varchar_key` = `test`.`t2`.`col_varchar_nokey`) and (`test`.`t1`.`col_int_nokey` = `test`.`t2`.`pk`))) where (<in_optimizer>(`test`.`t2`.`col_varchar_key`,`test`.`t2`.`col_varchar_key` in ( <materialize> (/* select#5 */ select `test`.`t3`.`col_varchar_nokey` AS `sq1_field1` from `test`.`t3` left join (`test`.`t1`) on((`test`.`t1`.`col_varchar_key` = `test`.`t3`.`col_varchar_nokey`)) where true ), <primary_index_lookup>(`test`.`t2`.`col_varchar_key` in <temporary table> on <auto_distinct_key> where ((`test`.`t2`.`col_varchar_key` = `materialized-subquery`.`sq1_field1`)))) is false) or (`test`.`t1`.`pk` = 96))
|
|
SELECT table1.pk
|
|
FROM (SELECT * FROM t1) AS table1
|
|
LEFT JOIN
|
|
(SELECT * FROM t1) AS table2
|
|
RIGHT OUTER JOIN
|
|
(SELECT * FROM t2) AS table3
|
|
ON table3.col_varchar_nokey = table2.col_varchar_key
|
|
ON table3.pk = table2.col_int_nokey
|
|
WHERE table3.col_varchar_key <> ALL
|
|
(SELECT sq1_t1.col_varchar_nokey AS sq1_field1
|
|
FROM (SELECT * FROM t3) AS sq1_t1
|
|
LEFT OUTER JOIN
|
|
(SELECT * FROM t1) AS sq1_t2
|
|
ON sq1_t2.col_varchar_key = sq1_t1.col_varchar_nokey
|
|
) OR
|
|
table1.pk = 96;
|
|
pk
|
|
DROP TABLE t1, t2, t3;
|
|
# Bug#19812352: Assert fail in subselect_hash_sj_engine::setup
|
|
CREATE TABLE t1 (
|
|
col_time_nokey time NOT NULL
|
|
);
|
|
INSERT INTO t1 VALUES ('00:00:00');
|
|
CREATE TABLE t2 (
|
|
pk int NOT NULL,
|
|
col_int_nokey int NOT NULL,
|
|
col_int_key int NOT NULL,
|
|
col_date_nokey date NOT NULL,
|
|
col_varchar_key varchar(1) NOT NULL,
|
|
col_varchar_nokey varchar(1) NOT NULL,
|
|
PRIMARY KEY (pk),
|
|
KEY col_int_key(col_int_key),
|
|
KEY col_varchar_key(col_varchar_key, col_int_key)
|
|
) charset utf8mb4;
|
|
INSERT INTO t2 VALUES
|
|
(1,4,0,'0001-01-01','j','j'), (2,6,8,'2004-09-18','v','v'),
|
|
(3,3,1,'2009-12-01','c','c'), (4,5,8,'2004-12-17','m','m'),
|
|
(5,3,9,'2000-03-14','d','d'), (6,246,24,'2000-10-08','d','d'),
|
|
(7,2,6,'2006-05-25','y','y'), (8,9,1,'2008-01-23','t','t'),
|
|
(9,3,6,'2007-06-18','d','d'), (10,8,2,'2002-10-13','s','s'),
|
|
(11,1,4,'1900-01-01','r','r'), (12,8,8,'0001-01-01','m','m'),
|
|
(13,8,4,'2006-03-09','b','b'), (14,5,4,'2001-06-05','x','x'),
|
|
(15,7,7,'2006-05-28','g','g'), (16,5,4,'2001-04-19','p','p'),
|
|
(17,1,1,'1900-01-01','q','q'), (18,6,9,'2004-08-20','w','w'),
|
|
(19,2,4,'2004-10-10','d','d'), (20,9,8,'2000-04-02','e','e');
|
|
CREATE TABLE t3 (
|
|
pk int NOT NULL,
|
|
col_int_key int NOT NULL,
|
|
col_varchar_key varchar(1) NOT NULL,
|
|
PRIMARY KEY (pk),
|
|
KEY col_varchar_key (col_varchar_key, col_int_key)
|
|
) charset utf8mb4;
|
|
INSERT INTO t3 VALUES
|
|
(10,1,'v'), (11,7,'s'), (12,4,'l'), (13,7,'y'), (14,0,'c'),
|
|
(15,2,'i'), (16,9,'h'), (17,4,'q'), (18,0,'a'), (19,9,'v'),
|
|
(20,1,'u'), (21,3,'s'), (22,8,'y'), (23,8,'z'), (24,18,'h'),
|
|
(25,84,'p'), (26,6,'e'), (27,3,'i'), (28,6,'y'), (29,6,'w');
|
|
CREATE TABLE t4 (
|
|
pk int NOT NULL,
|
|
col_int_nokey int NOT NULL,
|
|
col_int_key int NOT NULL,
|
|
col_varchar_nokey varchar(1) NOT NULL,
|
|
PRIMARY KEY (pk),
|
|
KEY col_int_key (col_int_key)
|
|
) charset utf8mb4;
|
|
INSERT INTO t4 VALUES (10,8,7,'b');
|
|
EXPLAIN SELECT outr.pk AS x
|
|
FROM (SELECT * FROM t1) AS outr2
|
|
LEFT JOIN (SELECT * FROM t2) AS outr
|
|
ON outr2.col_time_nokey >= outr.col_date_nokey
|
|
WHERE (outr.col_int_nokey, outr.col_int_key) IN
|
|
(SELECT innr.col_int_key AS x,
|
|
innr.col_int_nokey AS y
|
|
FROM (SELECT * FROM t3) AS innr2
|
|
LEFT JOIN (SELECT * FROM t4) AS innr
|
|
ON innr2.col_varchar_key <> innr.col_varchar_nokey
|
|
WHERE innr.col_int_key <> innr.pk OR innr.pk = 9
|
|
) AND
|
|
outr.pk < 7 XOR outr.col_varchar_nokey <> 'i'
|
|
ORDER BY outr.col_varchar_key, outr.pk;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 NULL system NULL NULL NULL NULL 1 100.00 Using filesort
|
|
1 PRIMARY t2 NULL ALL NULL NULL NULL NULL 20 21.11 Using where
|
|
4 DEPENDENT SUBQUERY t4 NULL system PRIMARY,col_int_key NULL NULL NULL 1 100.00 NULL
|
|
4 DEPENDENT SUBQUERY t3 NULL index NULL col_varchar_key 10 NULL 20 90.00 Using where; Using index
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t2`.`pk` AS `x` from `test`.`t2` where (((<in_optimizer>((`test`.`t2`.`col_int_nokey`,`test`.`t2`.`col_int_key`),<exists>(/* select#4 */ select 1,1 from `test`.`t3` where ((('7' <> '10') or false) and <if>(outer_field_is_not_null, ((<cache>(`test`.`t2`.`col_int_nokey`) = '7') or ('7' is null)), true) and <if>(outer_field_is_not_null, ((<cache>(`test`.`t2`.`col_int_key`) = '8') or ('8' is null)), true) and (`test`.`t3`.`col_varchar_key` <> 'b')) having (<if>(outer_field_is_not_null, <is_not_null_test>('7'), true) and <if>(outer_field_is_not_null, <is_not_null_test>('8'), true)))) and (`test`.`t2`.`pk` < 7)) xor (`test`.`t2`.`col_varchar_nokey` <> 'i')) and ('00:00:00' >= `test`.`t2`.`col_date_nokey`)) order by `test`.`t2`.`col_varchar_key`,`test`.`t2`.`pk`
|
|
SELECT outr.pk AS x
|
|
FROM (SELECT * FROM t1) AS outr2
|
|
LEFT JOIN (SELECT * FROM t2) AS outr
|
|
ON outr2.col_time_nokey >= outr.col_date_nokey
|
|
WHERE (outr.col_int_nokey, outr.col_int_key) IN
|
|
(SELECT innr.col_int_key AS x,
|
|
innr.col_int_nokey AS y
|
|
FROM (SELECT * FROM t3) AS innr2
|
|
LEFT JOIN (SELECT * FROM t4) AS innr
|
|
ON innr2.col_varchar_key <> innr.col_varchar_nokey
|
|
WHERE innr.col_int_key <> innr.pk OR innr.pk = 9
|
|
) AND
|
|
outr.pk < 7 XOR outr.col_varchar_nokey <> 'i'
|
|
ORDER BY outr.col_varchar_key, outr.pk;
|
|
x
|
|
13
|
|
3
|
|
5
|
|
6
|
|
9
|
|
19
|
|
20
|
|
15
|
|
1
|
|
4
|
|
12
|
|
16
|
|
17
|
|
11
|
|
10
|
|
8
|
|
2
|
|
18
|
|
14
|
|
7
|
|
DROP TABLE t1, t2, t3, t4;
|
|
# Bug#19811762: Assert fail in JOIN::propagate_dependencies
|
|
CREATE TABLE t1 (
|
|
pk int NOT NULL
|
|
);
|
|
CREATE TABLE t2 (
|
|
pk int NOT NULL,
|
|
col_int_key int DEFAULT NULL,
|
|
col_varchar_key varchar(1) DEFAULT NULL,
|
|
PRIMARY KEY (pk),
|
|
KEY col_int_key (col_int_key),
|
|
KEY col_varchar_key (col_varchar_key, col_int_key)
|
|
);
|
|
CREATE TABLE t3 (
|
|
pk int NOT NULL AUTO_INCREMENT,
|
|
col_int_nokey int DEFAULT NULL,
|
|
col_varchar_nokey varchar(1) DEFAULT NULL,
|
|
PRIMARY KEY (pk)
|
|
);
|
|
EXPLAIN SELECT table1.pk
|
|
FROM t1 AS table1
|
|
RIGHT JOIN
|
|
t2 AS table2
|
|
LEFT OUTER JOIN
|
|
(SELECT sq2_t1.*
|
|
FROM t2 AS sq2_t1 INNER JOIN t3 AS sq2_t2
|
|
ON sq2_t2.col_int_nokey = sq2_t1.col_int_key
|
|
WHERE sq2_t2.col_varchar_nokey <= sq2_t1.col_varchar_key OR
|
|
sq2_t2.col_int_nokey <> 2
|
|
) AS table3
|
|
ON table3.col_int_key = table2.col_int_key
|
|
ON table3.pk = table2.col_int_key
|
|
WHERE table3.pk >= 6 OR
|
|
table1.pk > 68 AND
|
|
table1.pk < ( 68 + 76 );
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select NULL AS `pk` from `test`.`t2` `table2` left join (`test`.`t2` `sq2_t1` join `test`.`t3` `sq2_t2`) on((((`test`.`sq2_t2`.`col_varchar_nokey` <= `test`.`sq2_t1`.`col_varchar_key`) or (`test`.`sq2_t2`.`col_int_nokey` <> 2)) and multiple equal(`test`.`sq2_t1`.`col_int_key`, NULL, `test`.`sq2_t2`.`col_int_nokey`))) where ((`test`.`sq2_t1`.`pk` >= 6) or ((NULL > 68) and (NULL < (68 + 76))))
|
|
SELECT table1.pk
|
|
FROM t1 AS table1
|
|
RIGHT JOIN
|
|
t2 AS table2
|
|
LEFT OUTER JOIN
|
|
(SELECT sq2_t1.*
|
|
FROM t2 AS sq2_t1 INNER JOIN t3 AS sq2_t2
|
|
ON sq2_t2.col_int_nokey = sq2_t1.col_int_key
|
|
WHERE sq2_t2.col_varchar_nokey <= sq2_t1.col_varchar_key OR
|
|
sq2_t2.col_int_nokey <> 2
|
|
) AS table3
|
|
ON table3.col_int_key = table2.col_int_key
|
|
ON table3.pk = table2.col_int_key
|
|
WHERE table3.pk >= 6 OR
|
|
table1.pk > 68 AND
|
|
table1.pk < ( 68 + 76 );
|
|
pk
|
|
DROP TABLE t1, t2, t3;
|
|
#
|
|
# Bug#19793998 ASSERTION FAILED: ROWS >= 0.0 IN
|
|
# HANDLER::INDEX_SCAN_COST()
|
|
#
|
|
SET @optimizer_switch_saved= @@optimizer_switch;
|
|
SET @@optimizer_switch="derived_merge=off";
|
|
CREATE TABLE t1 (
|
|
pk INTEGER PRIMARY KEY
|
|
);
|
|
INSERT INTO t1 VALUES (0),(1),(2);
|
|
CREATE TABLE t2 (
|
|
pk INTEGER PRIMARY KEY
|
|
);
|
|
INSERT INTO t2 VALUES (0),(1),(2);
|
|
explain SELECT SHA(pk) IN (SELECT * FROM (SELECT '' FROM t2) a) FROM t1;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 NULL index NULL PRIMARY 4 NULL 3 100.00 Using index
|
|
2 SUBQUERY <derived3> NULL ALL NULL NULL NULL NULL 3 100.00 NULL
|
|
3 DERIVED t2 NULL index NULL PRIMARY 4 NULL 3 100.00 Using index
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select <in_optimizer>(sha(`test`.`t1`.`pk`),sha(`test`.`t1`.`pk`) in ( <materialize> (/* select#2 */ select `` from (/* select#3 */ select '' AS `` from `test`.`t2`) `a` where true ), <primary_index_lookup>(sha(`test`.`t1`.`pk`) in <temporary table> on <auto_distinct_key> where ((sha(`test`.`t1`.`pk`) = ``))))) AS `SHA(pk) IN (SELECT * FROM (SELECT '' FROM t2) a)` from `test`.`t1`
|
|
SELECT SHA(pk) IN (SELECT * FROM (SELECT '' FROM t2) a) FROM t1;
|
|
SHA(pk) IN (SELECT * FROM (SELECT '' FROM t2) a)
|
|
0
|
|
0
|
|
0
|
|
DROP TABLE t1, t2;
|
|
SET @@optimizer_switch= @optimizer_switch_saved;
|
|
# Bug#20073930 Assert fail in store_top_level_join_columns
|
|
CREATE TABLE t1 (
|
|
pk int NOT NULL,
|
|
col_varchar_key varchar(1) NOT NULL,
|
|
PRIMARY KEY (pk)
|
|
) engine=innodb;
|
|
CREATE TABLE t2 (
|
|
pk int NOT NULL,
|
|
col_int_key int NOT NULL,
|
|
PRIMARY KEY (pk),
|
|
KEY col_int_key (col_int_key)
|
|
) engine=innodb;
|
|
CREATE TABLE t3 (
|
|
pk int NOT NULL,
|
|
PRIMARY KEY (pk)
|
|
) engine=innodb;
|
|
CREATE TABLE t4 (
|
|
pk int NOT NULL ,
|
|
col_varchar_key varchar(1) NOT NULL,
|
|
PRIMARY KEY (pk)
|
|
) engine=innodb;
|
|
explain SELECT table2.pk AS field2
|
|
FROM (SELECT sq1_t2.pk
|
|
FROM t1 AS sq1_t1
|
|
JOIN
|
|
(t1 AS sq1_t2 RIGHT JOIN t2 AS sq1_t3
|
|
ON sq1_t3.pk = sq1_t2.pk
|
|
)
|
|
ON sq1_t3.col_int_key = sq1_t2.pk AND
|
|
sq1_t1.col_varchar_key IN
|
|
(SELECT child_sq1_t2.col_varchar_key AS child_sq1_field1
|
|
FROM t1 AS child_sq1_t2
|
|
)
|
|
) AS table1
|
|
LEFT JOIN
|
|
t1 AS table2
|
|
JOIN
|
|
(SELECT sq2_t1.* FROM t1 AS sq2_t1) AS table3
|
|
ON table3.col_varchar_key = table2.col_varchar_key
|
|
ON table3.col_varchar_key = table2.col_varchar_key;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE sq1_t1 NULL ALL NULL NULL NULL NULL 1 100.00 NULL
|
|
1 SIMPLE sq1_t2 NULL index PRIMARY PRIMARY 4 NULL 1 100.00 Using where; Using index; Using join buffer (Block Nested Loop)
|
|
1 SIMPLE sq1_t3 NULL eq_ref PRIMARY,col_int_key PRIMARY 4 test.sq1_t2.pk 1 100.00 Using where
|
|
1 SIMPLE child_sq1_t2 NULL ALL NULL NULL NULL NULL 1 100.00 Using where; FirstMatch(sq1_t3); Using join buffer (Block Nested Loop)
|
|
1 SIMPLE table2 NULL ALL NULL NULL NULL NULL 1 100.00 Using join buffer (Block Nested Loop)
|
|
1 SIMPLE sq2_t1 NULL ALL NULL NULL NULL NULL 1 100.00 Using where; Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`table2`.`pk` AS `field2` from `test`.`t1` `sq1_t1` join `test`.`t2` `sq1_t3` join `test`.`t1` `sq1_t2` semi join (`test`.`t1` `child_sq1_t2`) left join (`test`.`t1` `table2` join `test`.`t1` `sq2_t1`) on(((`test`.`sq2_t1`.`col_varchar_key` = `test`.`table2`.`col_varchar_key`))) where ((`test`.`child_sq1_t2`.`col_varchar_key` = `test`.`sq1_t1`.`col_varchar_key`) and (`test`.`sq1_t3`.`col_int_key` = `test`.`sq1_t2`.`pk`) and (`test`.`sq1_t3`.`pk` = `test`.`sq1_t2`.`pk`))
|
|
SELECT table2.pk AS field2
|
|
FROM (SELECT sq1_t2.pk
|
|
FROM t1 AS sq1_t1
|
|
JOIN
|
|
(t1 AS sq1_t2 RIGHT JOIN t2 AS sq1_t3
|
|
ON sq1_t3.pk = sq1_t2.pk
|
|
)
|
|
ON sq1_t3.col_int_key = sq1_t2.pk AND
|
|
sq1_t1.col_varchar_key IN
|
|
(SELECT child_sq1_t2.col_varchar_key AS child_sq1_field1
|
|
FROM t1 AS child_sq1_t2
|
|
)
|
|
) AS table1
|
|
LEFT JOIN
|
|
t1 AS table2
|
|
JOIN
|
|
(SELECT sq2_t1.* FROM t1 AS sq2_t1) AS table3
|
|
ON table3.col_varchar_key = table2.col_varchar_key
|
|
ON table3.col_varchar_key = table2.col_varchar_key;
|
|
field2
|
|
DROP TABLE t1, t2, t3, t4;
|
|
# Bug#20118755 Assert fail in JOIN::propagate_dependencies
|
|
CREATE TABLE t1 (
|
|
pk int NOT NULL ,
|
|
col_varchar_key varchar(1) DEFAULT NULL,
|
|
col_varchar_nokey varchar(1) DEFAULT NULL,
|
|
PRIMARY KEY (pk)
|
|
);
|
|
CREATE TABLE t2 (
|
|
pk int NOT NULL,
|
|
col_int_nokey int DEFAULT NULL,
|
|
col_int_key int DEFAULT NULL,
|
|
col_varchar_key varchar(1) DEFAULT NULL,
|
|
col_varchar_nokey varchar(1) DEFAULT NULL,
|
|
PRIMARY KEY (pk)
|
|
);
|
|
explain SELECT table1.pk AS field1,
|
|
table2.pk field2
|
|
FROM (SELECT sq1_t1.*
|
|
FROM t1 AS sq1_t1
|
|
) AS table1
|
|
RIGHT JOIN
|
|
(SELECT sq2_t1.*
|
|
FROM t2 AS sq2_t1
|
|
WHERE sq2_t1.col_int_key NOT IN
|
|
(SELECT child_sq1_t1.col_int_key AS child_sq2_field1
|
|
FROM t2 AS child_sq1_t1
|
|
)
|
|
) AS table2
|
|
RIGHT JOIN t2 AS table3
|
|
ON table3.col_varchar_nokey = table2.col_varchar_key
|
|
ON table3.col_varchar_nokey = table2.col_varchar_key;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
4 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL Not optimized, outer query is empty
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`sq1_t1`.`pk` AS `field1`,`test`.`sq2_t1`.`pk` AS `field2` from `test`.`t2` `table3` left join (`test`.`t2` `sq2_t1`) on((<in_optimizer>(`test`.`sq2_t1`.`col_int_key`,<exists>(/* select#4 */ select `test`.`child_sq1_t1`.`col_int_key` AS `child_sq2_field1` from `test`.`t2` `child_sq1_t1` where <if>(outer_field_is_not_null, ((<cache>(`test`.`sq2_t1`.`col_int_key`) = `test`.`child_sq1_t1`.`col_int_key`) or (`test`.`child_sq1_t1`.`col_int_key` is null)), true) having <if>(outer_field_is_not_null, <is_not_null_test>(`test`.`child_sq1_t1`.`col_int_key`), true)) is false) and multiple equal(NULL, `test`.`sq2_t1`.`col_varchar_key`))) left join (`test`.`t1` `sq1_t1`) on(multiple equal(NULL, `test`.`sq2_t1`.`col_varchar_key`))
|
|
SELECT table1.pk AS field1,
|
|
table2.pk field2
|
|
FROM (SELECT sq1_t1.*
|
|
FROM t1 AS sq1_t1
|
|
) AS table1
|
|
RIGHT JOIN
|
|
(SELECT sq2_t1.*
|
|
FROM t2 AS sq2_t1
|
|
WHERE sq2_t1.col_int_key NOT IN
|
|
(SELECT child_sq1_t1.col_int_key AS child_sq2_field1
|
|
FROM t2 AS child_sq1_t1
|
|
)
|
|
) AS table2
|
|
RIGHT JOIN t2 AS table3
|
|
ON table3.col_varchar_nokey = table2.col_varchar_key
|
|
ON table3.col_varchar_nokey = table2.col_varchar_key;
|
|
field1 field2
|
|
DROP TABLE t1, t2;
|
|
# Bug#20073366 Assert fail in
|
|
# Optimize_table_order::Optimize_straight_join
|
|
CREATE TABLE t1 (
|
|
pk int NOT NULL,
|
|
col_int_nokey int DEFAULT NULL,
|
|
col_int_key int DEFAULT NULL,
|
|
col_date_key date DEFAULT NULL,
|
|
col_varchar_key varchar(1) DEFAULT NULL,
|
|
PRIMARY KEY (pk),
|
|
KEY col_int_key (col_int_key),
|
|
KEY col_date_key (col_date_key),
|
|
KEY col_varchar_key (col_varchar_key, col_int_key)
|
|
) charset utf8mb4;
|
|
CREATE TABLE t2 (
|
|
pk int NOT NULL,
|
|
col_varchar_key varchar(1) DEFAULT NULL,
|
|
PRIMARY KEY (pk)
|
|
) charset utf8mb4;
|
|
CREATE TABLE t3 (
|
|
pk int NOT NULL,
|
|
col_varchar_key varchar(1) DEFAULT NULL,
|
|
col_varchar_nokey varchar(1) DEFAULT NULL,
|
|
PRIMARY KEY (pk)
|
|
) charset utf8mb4;
|
|
explain SELECT STRAIGHT_JOIN alias1.col_date_key AS field1
|
|
FROM t1 AS alias1
|
|
INNER JOIN
|
|
((SELECT sq1_alias1.col_varchar_key
|
|
FROM t1 AS sq1_alias1 RIGHT OUTER JOIN t2 AS sq1_alias2
|
|
ON sq1_alias2.pk = sq1_alias1.col_int_key
|
|
WHERE ('n', 'l') IN
|
|
(SELECT
|
|
c_sq1_alias1.col_varchar_nokey AS c_sq1_field1,
|
|
c_sq1_alias1.col_varchar_key AS c_sq1_field2
|
|
FROM t3 AS c_sq1_alias1
|
|
INNER JOIN
|
|
(t1 AS c_sq1_alias2
|
|
INNER JOIN t1 AS c_sq1_alias3
|
|
ON c_sq1_alias3.col_varchar_key = c_sq1_alias2.col_varchar_key
|
|
)
|
|
ON c_sq1_alias3.pk = c_sq1_alias2.pk
|
|
WHERE c_sq1_alias3.col_int_nokey <> c_sq1_alias2.col_int_nokey
|
|
) AND
|
|
sq1_alias2.col_varchar_key = 't'
|
|
) AS alias2
|
|
INNER JOIN t3 AS alias3
|
|
ON alias3.col_varchar_nokey = alias2.col_varchar_key
|
|
)
|
|
ON alias3.col_varchar_key = alias2.col_varchar_key;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select straight_join NULL AS `field1` from `test`.`t1` `alias1` join (/* select#2 */ select NULL AS `col_varchar_key` from `test`.`t2` `sq1_alias2` semi join (`test`.`t3` `c_sq1_alias1` join `test`.`t1` `c_sq1_alias2` join `test`.`t1` `c_sq1_alias3`) where ((`test`.`c_sq1_alias3`.`col_int_nokey` <> `test`.`c_sq1_alias2`.`col_int_nokey`) and multiple equal('t', NULL) and multiple equal('n', `test`.`c_sq1_alias1`.`col_varchar_nokey`) and multiple equal('l', `test`.`c_sq1_alias1`.`col_varchar_key`) and multiple equal(`test`.`c_sq1_alias3`.`pk`, `test`.`c_sq1_alias2`.`pk`) and multiple equal(`test`.`c_sq1_alias3`.`col_varchar_key`, `test`.`c_sq1_alias2`.`col_varchar_key`))) `alias2` join `test`.`t3` `alias3` where multiple equal(`test`.`alias3`.`col_varchar_key`, `alias2`.`col_varchar_key`, `test`.`alias3`.`col_varchar_nokey`)
|
|
SELECT STRAIGHT_JOIN alias1.col_date_key AS field1
|
|
FROM t1 AS alias1
|
|
INNER JOIN
|
|
((SELECT sq1_alias1.col_varchar_key
|
|
FROM t1 AS sq1_alias1 RIGHT OUTER JOIN t2 AS sq1_alias2
|
|
ON sq1_alias2.pk = sq1_alias1.col_int_key
|
|
WHERE ('n', 'l') IN
|
|
(SELECT
|
|
c_sq1_alias1.col_varchar_nokey AS c_sq1_field1,
|
|
c_sq1_alias1.col_varchar_key AS c_sq1_field2
|
|
FROM t3 AS c_sq1_alias1
|
|
INNER JOIN
|
|
(t1 AS c_sq1_alias2
|
|
INNER JOIN t1 AS c_sq1_alias3
|
|
ON c_sq1_alias3.col_varchar_key = c_sq1_alias2.col_varchar_key
|
|
)
|
|
ON c_sq1_alias3.pk = c_sq1_alias2.pk
|
|
WHERE c_sq1_alias3.col_int_nokey <> c_sq1_alias2.col_int_nokey
|
|
) AND
|
|
sq1_alias2.col_varchar_key = 't'
|
|
) AS alias2
|
|
INNER JOIN t3 AS alias3
|
|
ON alias3.col_varchar_nokey = alias2.col_varchar_key
|
|
)
|
|
ON alias3.col_varchar_key = alias2.col_varchar_key;
|
|
field1
|
|
DROP TABLE t1, t2, t3;
|
|
# Bug#20204415 Assertion failure in TABLE_LIST::set_merged()
|
|
CREATE TABLE t(a INTEGER);
|
|
CREATE VIEW v AS SELECT * FROM t;
|
|
SET optimizer_switch='derived_merge=off';
|
|
PREPARE s1 FROM 'SELECT * FROM v';
|
|
PREPARE s2 FROM 'SELECT * FROM (SELECT * FROM t) AS dt';
|
|
SET optimizer_switch='derived_merge=on';
|
|
EXECUTE s1;
|
|
a
|
|
EXECUTE s2;
|
|
a
|
|
DEALLOCATE PREPARE s1;
|
|
DEALLOCATE PREPARE s2;
|
|
DROP VIEW v;
|
|
DROP TABLE t;
|
|
# Bug#20487336 Assert length > 0 && keyparts != 0 in calc_length_and_key
|
|
CREATE TABLE t1
|
|
(pk INTEGER PRIMARY KEY,
|
|
col_int_nokey INTEGER,
|
|
col_varchar_nokey VARCHAR(1),
|
|
col_varchar_key VARCHAR(1),
|
|
KEY col_varchar_key(col_varchar_key)
|
|
) charset utf8mb4 engine=innodb;
|
|
INSERT INTO t1 (pk) VALUES
|
|
(1), (2), (3), (4), (5), (6), (7), (8), (9), (10),
|
|
(11), (12), (13), (14), (15), (16), (17), (18), (19), (20);
|
|
CREATE TABLE t2
|
|
(pk INTEGER PRIMARY KEY,
|
|
col_varchar_key VARCHAR(1),
|
|
KEY col_varchar_key(col_varchar_key)
|
|
) charset utf8mb4 engine=innodb;
|
|
INSERT INTO t2 (pk) VALUES
|
|
(1), (2), (3), (4), (5), (6), (7), (8), (9), (10),
|
|
(11), (12), (13), (14), (15), (16), (17), (18), (19), (20);
|
|
CREATE TABLE t3
|
|
(pk INTEGER PRIMARY KEY,
|
|
col_varchar_key VARCHAR(1),
|
|
KEY col_varchar_key(col_varchar_key)
|
|
) charset utf8mb4 engine=innodb;
|
|
INSERT INTO t3 (pk) VALUES
|
|
(1), (2);
|
|
ANALYZE TABLE t1, t2, t3;
|
|
Table Op Msg_type Msg_text
|
|
test.t1 analyze status OK
|
|
test.t2 analyze status OK
|
|
test.t3 analyze status OK
|
|
explain SELECT MIN(alias1.col_varchar_nokey) AS field1
|
|
FROM (SELECT sq1_alias1.*
|
|
FROM t1 AS sq1_alias1, t1 AS sq1_alias2
|
|
WHERE sq1_alias1.col_varchar_nokey IN
|
|
(SELECT c_sq1_alias2.col_varchar_key AS c_sq1_field1
|
|
FROM t1 AS c_sq1_alias1 INNER JOIN
|
|
t1 AS c_sq1_alias2
|
|
ON c_sq1_alias2.col_varchar_nokey = c_sq1_alias1.col_varchar_key
|
|
WHERE c_sq1_alias1.col_int_nokey <> c_sq1_alias1.col_int_nokey
|
|
) AND
|
|
sq1_alias2.pk = sq1_alias1.pk
|
|
) AS alias1,
|
|
(SELECT sq2_alias1.*
|
|
FROM t2 AS sq2_alias1 RIGHT JOIN
|
|
t3 AS sq2_alias2
|
|
ON sq2_alias2.col_varchar_key = sq2_alias1.col_varchar_key
|
|
) AS alias2;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE sq2_alias2 NULL index NULL col_varchar_key 7 NULL 2 100.00 Using index
|
|
1 SIMPLE <subquery3> NULL ALL NULL NULL NULL NULL NULL 100.00 Using join buffer (Block Nested Loop)
|
|
1 SIMPLE sq1_alias1 NULL ALL PRIMARY NULL NULL NULL 20 10.00 Using where; Using join buffer (Block Nested Loop)
|
|
1 SIMPLE sq1_alias2 NULL eq_ref PRIMARY PRIMARY 4 test.sq1_alias1.pk 1 100.00 Using index
|
|
1 SIMPLE sq2_alias1 NULL ref col_varchar_key col_varchar_key 7 test.sq2_alias2.col_varchar_key 20 100.00 Using index
|
|
3 MATERIALIZED c_sq1_alias1 NULL ALL col_varchar_key NULL NULL NULL 20 90.00 Using where
|
|
3 MATERIALIZED c_sq1_alias2 NULL ALL col_varchar_key NULL NULL NULL 20 10.00 Using where; Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select min(`test`.`sq1_alias1`.`col_varchar_nokey`) AS `field1` from `test`.`t1` `sq1_alias1` join `test`.`t1` `sq1_alias2` semi join (`test`.`t1` `c_sq1_alias1` join `test`.`t1` `c_sq1_alias2`) join `test`.`t3` `sq2_alias2` left join `test`.`t2` `sq2_alias1` on((`test`.`sq2_alias1`.`col_varchar_key` = `test`.`sq2_alias2`.`col_varchar_key`)) where ((`test`.`c_sq1_alias2`.`col_varchar_nokey` = `test`.`c_sq1_alias1`.`col_varchar_key`) and (`test`.`sq1_alias1`.`col_varchar_nokey` = `<subquery3>`.`c_sq1_field1`) and (`test`.`sq1_alias2`.`pk` = `test`.`sq1_alias1`.`pk`) and (`test`.`c_sq1_alias1`.`col_int_nokey` <> `test`.`c_sq1_alias1`.`col_int_nokey`))
|
|
SELECT MIN(alias1.col_varchar_nokey) AS field1
|
|
FROM (SELECT sq1_alias1.*
|
|
FROM t1 AS sq1_alias1, t1 AS sq1_alias2
|
|
WHERE sq1_alias1.col_varchar_nokey IN
|
|
(SELECT c_sq1_alias2.col_varchar_key AS c_sq1_field1
|
|
FROM t1 AS c_sq1_alias1 INNER JOIN
|
|
t1 AS c_sq1_alias2
|
|
ON c_sq1_alias2.col_varchar_nokey = c_sq1_alias1.col_varchar_key
|
|
WHERE c_sq1_alias1.col_int_nokey <> c_sq1_alias1.col_int_nokey
|
|
) AND
|
|
sq1_alias2.pk = sq1_alias1.pk
|
|
) AS alias1,
|
|
(SELECT sq2_alias1.*
|
|
FROM t2 AS sq2_alias1 RIGHT JOIN
|
|
t3 AS sq2_alias2
|
|
ON sq2_alias2.col_varchar_key = sq2_alias1.col_varchar_key
|
|
) AS alias2;
|
|
field1
|
|
NULL
|
|
DROP TABLE t1, t2, t3;
|
|
#
|
|
# Bug #18607971 : 5.5 TO 5.6 REGRESSION WITH A SUBQUERY IN THE FROM
|
|
# CLAUSE.
|
|
#
|
|
CREATE TABLE t(id INT PRIMARY KEY,
|
|
c1 INT, c2 INT, key(c2)) engine=InnoDB;
|
|
INSERT INTO t(id, c1, c2) VALUES(1, 2, 3), (2, 3, 4), (3, 3, 4), (4, 3, 4);
|
|
ANALYZE TABLE t;
|
|
Table Op Msg_type Msg_text
|
|
test.t analyze status OK
|
|
EXPLAIN SELECT * FROM
|
|
(SELECT t1.c1
|
|
FROM t t1 INNER JOIN t t2 ON t1.c1= 3
|
|
GROUP BY t1.c1) a, t b
|
|
WHERE b.id BETWEEN 1 AND 10;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived2> NULL system NULL NULL NULL NULL 1 100.00 NULL
|
|
1 PRIMARY b NULL range PRIMARY PRIMARY 4 NULL 4 100.00 Using where
|
|
2 DERIVED t1 NULL ALL NULL NULL NULL NULL 4 25.00 Using where
|
|
2 DERIVED t2 NULL index NULL c2 5 NULL 4 100.00 Using index; Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select '3' AS `c1`,`test`.`b`.`id` AS `id`,`test`.`b`.`c1` AS `c1`,`test`.`b`.`c2` AS `c2` from `test`.`t` `b` where (`test`.`b`.`id` between 1 and 10)
|
|
EXPLAIN SELECT * FROM
|
|
(SELECT t1.id
|
|
FROM t t1 INNER JOIN t t2 ON t1.id=1 AND t1.c1=t2.id
|
|
GROUP BY t1.id, t2.c2) a, t b
|
|
WHERE b.id BETWEEN 1 AND 10;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived2> NULL system NULL NULL NULL NULL 1 100.00 NULL
|
|
1 PRIMARY b NULL range PRIMARY PRIMARY 4 NULL 4 100.00 Using where
|
|
2 DERIVED t1 NULL const PRIMARY PRIMARY 4 const 1 100.00 NULL
|
|
2 DERIVED t2 NULL const PRIMARY PRIMARY 4 const 1 100.00 NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select '1' AS `id`,`test`.`b`.`id` AS `id`,`test`.`b`.`c1` AS `c1`,`test`.`b`.`c2` AS `c2` from `test`.`t` `b` where (`test`.`b`.`id` between 1 and 10)
|
|
EXPLAIN SELECT * FROM
|
|
(SELECT t1.c1
|
|
FROM t t1 INNER JOIN t t2 ON t1.c1= 3 AND t2.c2= 3
|
|
GROUP BY t1.c1) a, t b
|
|
WHERE b.id BETWEEN 1 AND 10;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived2> NULL system NULL NULL NULL NULL 1 100.00 NULL
|
|
1 PRIMARY b NULL range PRIMARY PRIMARY 4 NULL 4 100.00 Using where
|
|
2 DERIVED t2 NULL ref c2 c2 5 const 1 100.00 Using index
|
|
2 DERIVED t1 NULL ALL NULL NULL NULL NULL 4 25.00 Using where; Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select '3' AS `c1`,`test`.`b`.`id` AS `id`,`test`.`b`.`c1` AS `c1`,`test`.`b`.`c2` AS `c2` from `test`.`t` `b` where (`test`.`b`.`id` between 1 and 10)
|
|
EXPLAIN SELECT * FROM
|
|
(SELECT t1.c1
|
|
FROM t t1 INNER JOIN t t2 ON t1.c1= 3 AND t2.c2= 3
|
|
GROUP BY t1.c1, t2.c2) a, t b
|
|
WHERE b.id BETWEEN 1 AND 10;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived2> NULL system NULL NULL NULL NULL 1 100.00 NULL
|
|
1 PRIMARY b NULL range PRIMARY PRIMARY 4 NULL 4 100.00 Using where
|
|
2 DERIVED t2 NULL ref c2 c2 5 const 1 100.00 Using index
|
|
2 DERIVED t1 NULL ALL NULL NULL NULL NULL 4 25.00 Using where; Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select '3' AS `c1`,`test`.`b`.`id` AS `id`,`test`.`b`.`c1` AS `c1`,`test`.`b`.`c2` AS `c2` from `test`.`t` `b` where (`test`.`b`.`id` between 1 and 10)
|
|
EXPLAIN SELECT * FROM
|
|
(SELECT t1.c1
|
|
FROM t t1 INNER JOIN t t2 ON t1.c1= 3 AND t2.c2= 3
|
|
GROUP BY t1.c1, t1.id) a, t b
|
|
WHERE b.id BETWEEN 1 AND 10;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY b NULL range PRIMARY PRIMARY 4 NULL 4 100.00 Using where
|
|
1 PRIMARY <derived2> NULL ALL NULL NULL NULL NULL 2 100.00 Using join buffer (Block Nested Loop)
|
|
2 DERIVED t2 NULL ref c2 c2 5 const 1 100.00 Using index; Using temporary
|
|
2 DERIVED t1 NULL ALL NULL NULL NULL NULL 4 25.00 Using where; Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `a`.`c1` AS `c1`,`test`.`b`.`id` AS `id`,`test`.`b`.`c1` AS `c1`,`test`.`b`.`c2` AS `c2` from (/* select#2 */ select `test`.`t1`.`c1` AS `c1` from `test`.`t` `t1` join `test`.`t` `t2` where ((`test`.`t2`.`c2` = 3) and (`test`.`t1`.`c1` = 3)) group by `test`.`t1`.`c1`,`test`.`t1`.`id`) `a` join `test`.`t` `b` where (`test`.`b`.`id` between 1 and 10)
|
|
EXPLAIN SELECT * FROM
|
|
(SELECT t1.id
|
|
FROM t t1 INNER JOIN t t2 ON t1.id=1 AND t1.c1=t2.c1
|
|
GROUP BY t2.c1, t1.id) a, t b
|
|
WHERE b.id BETWEEN 1 AND 10;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived2> NULL system NULL NULL NULL NULL 1 100.00 NULL
|
|
1 PRIMARY b NULL range PRIMARY PRIMARY 4 NULL 4 100.00 Using where
|
|
2 DERIVED t1 NULL const PRIMARY PRIMARY 4 const 1 100.00 NULL
|
|
2 DERIVED t2 NULL ALL NULL NULL NULL NULL 4 25.00 Using where
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select '1' AS `id`,`test`.`b`.`id` AS `id`,`test`.`b`.`c1` AS `c1`,`test`.`b`.`c2` AS `c2` from `test`.`t` `b` where (`test`.`b`.`id` between 1 and 10)
|
|
EXPLAIN SELECT * FROM
|
|
(SELECT t1.id
|
|
FROM t t1 INNER JOIN t t2 ON t1.id=1 AND t1.c1=t2.id
|
|
GROUP BY t2.c1, t1.id) a, t b
|
|
WHERE b.id BETWEEN 1 AND 10;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived2> NULL system NULL NULL NULL NULL 1 100.00 NULL
|
|
1 PRIMARY b NULL range PRIMARY PRIMARY 4 NULL 4 100.00 Using where
|
|
2 DERIVED t1 NULL const PRIMARY PRIMARY 4 const 1 100.00 NULL
|
|
2 DERIVED t2 NULL const PRIMARY PRIMARY 4 const 1 100.00 NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select '1' AS `id`,`test`.`b`.`id` AS `id`,`test`.`b`.`c1` AS `c1`,`test`.`b`.`c2` AS `c2` from `test`.`t` `b` where (`test`.`b`.`id` between 1 and 10)
|
|
EXPLAIN SELECT * FROM
|
|
(SELECT t1.id
|
|
FROM t t1 INNER JOIN t t2 ON t1.id=1 AND t1.c1=t2.id
|
|
GROUP BY t2.c2, t1.id) a, t b
|
|
WHERE b.id BETWEEN 1 AND 10;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived2> NULL system NULL NULL NULL NULL 1 100.00 NULL
|
|
1 PRIMARY b NULL range PRIMARY PRIMARY 4 NULL 4 100.00 Using where
|
|
2 DERIVED t1 NULL const PRIMARY PRIMARY 4 const 1 100.00 NULL
|
|
2 DERIVED t2 NULL const PRIMARY PRIMARY 4 const 1 100.00 NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select '1' AS `id`,`test`.`b`.`id` AS `id`,`test`.`b`.`c1` AS `c1`,`test`.`b`.`c2` AS `c2` from `test`.`t` `b` where (`test`.`b`.`id` between 1 and 10)
|
|
EXPLAIN SELECT * FROM
|
|
(SELECT t1.id
|
|
FROM t t1 INNER JOIN t t2 ON t1.id=1 AND t1.c1=t2.id
|
|
GROUP BY t1.id, t2.c2) a, t b
|
|
WHERE b.id BETWEEN 1 AND 10;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived2> NULL system NULL NULL NULL NULL 1 100.00 NULL
|
|
1 PRIMARY b NULL range PRIMARY PRIMARY 4 NULL 4 100.00 Using where
|
|
2 DERIVED t1 NULL const PRIMARY PRIMARY 4 const 1 100.00 NULL
|
|
2 DERIVED t2 NULL const PRIMARY PRIMARY 4 const 1 100.00 NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select '1' AS `id`,`test`.`b`.`id` AS `id`,`test`.`b`.`c1` AS `c1`,`test`.`b`.`c2` AS `c2` from `test`.`t` `b` where (`test`.`b`.`id` between 1 and 10)
|
|
EXPLAIN SELECT * FROM
|
|
(SELECT t1.id
|
|
FROM t t1 INNER JOIN t t2 INNER JOIN t t3 ON t1.id=1 AND t1.c1=t2.id AND t2.c1=t3.id
|
|
GROUP BY t1.id, t2.c2, t3.c2) a, t b
|
|
WHERE b.id BETWEEN 1 AND 10;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived2> NULL system NULL NULL NULL NULL 1 100.00 NULL
|
|
1 PRIMARY b NULL range PRIMARY PRIMARY 4 NULL 4 100.00 Using where
|
|
2 DERIVED t1 NULL const PRIMARY PRIMARY 4 const 1 100.00 NULL
|
|
2 DERIVED t2 NULL const PRIMARY PRIMARY 4 const 1 100.00 NULL
|
|
2 DERIVED t3 NULL const PRIMARY PRIMARY 4 const 1 100.00 NULL
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select '1' AS `id`,`test`.`b`.`id` AS `id`,`test`.`b`.`c1` AS `c1`,`test`.`b`.`c2` AS `c2` from `test`.`t` `b` where (`test`.`b`.`id` between 1 and 10)
|
|
EXPLAIN SELECT * FROM
|
|
(SELECT DISTINCT t1.id
|
|
FROM t t1
|
|
WHERE t1.id= 1) a, t b
|
|
WHERE b.id BETWEEN 1 AND 10;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived2> NULL system NULL NULL NULL NULL 1 100.00 NULL
|
|
1 PRIMARY b NULL range PRIMARY PRIMARY 4 NULL 4 100.00 Using where
|
|
2 DERIVED t1 NULL const PRIMARY PRIMARY 4 const 1 100.00 Using index
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select '1' AS `id`,`test`.`b`.`id` AS `id`,`test`.`b`.`c1` AS `c1`,`test`.`b`.`c2` AS `c2` from `test`.`t` `b` where (`test`.`b`.`id` between 1 and 10)
|
|
EXPLAIN SELECT * FROM
|
|
(SELECT t1.id + 1
|
|
FROM t t1 INNER JOIN t t2 ON t1.id= 1
|
|
GROUP BY t1.id + 1) a, t b
|
|
WHERE b.id BETWEEN 1 AND 10;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived2> NULL system NULL NULL NULL NULL 1 100.00 NULL
|
|
1 PRIMARY b NULL range PRIMARY PRIMARY 4 NULL 4 100.00 Using where
|
|
2 DERIVED t1 NULL const PRIMARY PRIMARY 4 const 1 100.00 Using index
|
|
2 DERIVED t2 NULL index NULL c2 5 NULL 4 100.00 Using index
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select '2' AS `t1.id + 1`,`test`.`b`.`id` AS `id`,`test`.`b`.`c1` AS `c1`,`test`.`b`.`c2` AS `c2` from `test`.`t` `b` where (`test`.`b`.`id` between 1 and 10)
|
|
EXPLAIN SELECT * FROM
|
|
(SELECT t1.c1
|
|
FROM t t1 INNER JOIN t t2 ON t1.c1= 3
|
|
GROUP BY 1.5) a, t b
|
|
WHERE b.id BETWEEN 1 AND 10;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived2> NULL system NULL NULL NULL NULL 1 100.00 NULL
|
|
1 PRIMARY b NULL range PRIMARY PRIMARY 4 NULL 4 100.00 Using where
|
|
2 DERIVED t1 NULL ALL NULL NULL NULL NULL 4 25.00 Using where
|
|
2 DERIVED t2 NULL index NULL c2 5 NULL 4 100.00 Using index; Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select '3' AS `c1`,`test`.`b`.`id` AS `id`,`test`.`b`.`c1` AS `c1`,`test`.`b`.`c2` AS `c2` from `test`.`t` `b` where (`test`.`b`.`id` between 1 and 10)
|
|
EXPLAIN SELECT * FROM
|
|
(SELECT t1.id
|
|
FROM t t1 INNER JOIN t t2 ON mod(t1.id,1000)= 1
|
|
GROUP BY t1.id) a, t b
|
|
WHERE b.id BETWEEN 1 AND 10;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY b NULL range PRIMARY PRIMARY 4 NULL 4 100.00 Using where
|
|
1 PRIMARY <derived2> NULL ALL NULL NULL NULL NULL 16 100.00 Using join buffer (Block Nested Loop)
|
|
2 DERIVED t1 NULL index PRIMARY,c2 c2 5 NULL 4 100.00 Using where; Using index; Using temporary
|
|
2 DERIVED t2 NULL index NULL c2 5 NULL 4 100.00 Using index; Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `a`.`id` AS `id`,`test`.`b`.`id` AS `id`,`test`.`b`.`c1` AS `c1`,`test`.`b`.`c2` AS `c2` from (/* select#2 */ select `test`.`t1`.`id` AS `id` from `test`.`t` `t1` join `test`.`t` `t2` where ((`test`.`t1`.`id` % 1000) = 1) group by `test`.`t1`.`id`) `a` join `test`.`t` `b` where (`test`.`b`.`id` between 1 and 10)
|
|
EXPLAIN SELECT * FROM
|
|
(SELECT t1.id + 1
|
|
FROM t t1 INNER JOIN t t2 ON t1.id + 1= 2
|
|
GROUP BY t1.id + 1) a, t b
|
|
WHERE b.id BETWEEN 1 AND 10;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived2> NULL system NULL NULL NULL NULL 1 100.00 NULL
|
|
1 PRIMARY b NULL range PRIMARY PRIMARY 4 NULL 4 100.00 Using where
|
|
2 DERIVED t1 NULL index PRIMARY,c2 c2 5 NULL 4 100.00 Using where; Using index
|
|
2 DERIVED t2 NULL index NULL c2 5 NULL 4 100.00 Using index; Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select '2' AS `t1.id + 1`,`test`.`b`.`id` AS `id`,`test`.`b`.`c1` AS `c1`,`test`.`b`.`c2` AS `c2` from `test`.`t` `b` where (`test`.`b`.`id` between 1 and 10)
|
|
CREATE VIEW v1 AS SELECT c1 a FROM t WHERE c1 = 3;
|
|
CREATE VIEW v2 AS SELECT c2 b FROM t WHERE c2 > 3;
|
|
EXPLAIN SELECT * FROM (SELECT v1.a
|
|
FROM v1 LEFT OUTER JOIN v2 ON v1.a = v2.b
|
|
GROUP BY v1.a) p, t q
|
|
WHERE q.id BETWEEN 1 AND 10;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived2> NULL system NULL NULL NULL NULL 1 100.00 NULL
|
|
1 PRIMARY q NULL range PRIMARY PRIMARY 4 NULL 4 100.00 Using where
|
|
2 DERIVED t NULL ALL NULL NULL NULL NULL 4 25.00 Using where
|
|
2 DERIVED t NULL ref c2 c2 5 const 2 100.00 Using where; Using index
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select '3' AS `a`,`test`.`q`.`id` AS `id`,`test`.`q`.`c1` AS `c1`,`test`.`q`.`c2` AS `c2` from `test`.`t` `q` where (`test`.`q`.`id` between 1 and 10)
|
|
DROP VIEW v1;
|
|
CREATE VIEW v1 AS SELECT c1 a FROM t;
|
|
EXPLAIN SELECT * FROM (SELECT v1.a
|
|
FROM v1 LEFT OUTER JOIN v2 ON v1.a = v2.b AND v1.a = 10
|
|
GROUP BY v1.a) p, t q
|
|
WHERE q.id BETWEEN 1 AND 10;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY q NULL range PRIMARY PRIMARY 4 NULL 4 100.00 Using where
|
|
1 PRIMARY <derived2> NULL ALL NULL NULL NULL NULL 8 100.00 Using join buffer (Block Nested Loop)
|
|
2 DERIVED t NULL ALL NULL NULL NULL NULL 4 100.00 Using temporary
|
|
2 DERIVED t NULL ref c2 c2 5 const 2 100.00 Using where; Using index
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `p`.`a` AS `a`,`test`.`q`.`id` AS `id`,`test`.`q`.`c1` AS `c1`,`test`.`q`.`c2` AS `c2` from (/* select#2 */ select `test`.`t`.`c1` AS `a` from `test`.`t` left join (`test`.`t`) on(((`test`.`t`.`c1` = 10) and (`test`.`t`.`c2` = 10) and (10 > 3))) where true group by `test`.`t`.`c1`) `p` join `test`.`t` `q` where (`test`.`q`.`id` between 1 and 10)
|
|
EXPLAIN SELECT * FROM (SELECT v1.a
|
|
FROM v1 LEFT OUTER JOIN v2 ON v1.a = v2.b
|
|
WHERE v1.a = 3
|
|
GROUP BY v1.a) p, t q
|
|
WHERE q.id BETWEEN 1 AND 10;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived2> NULL system NULL NULL NULL NULL 1 100.00 NULL
|
|
1 PRIMARY q NULL range PRIMARY PRIMARY 4 NULL 4 100.00 Using where
|
|
2 DERIVED t NULL ALL NULL NULL NULL NULL 4 25.00 Using where
|
|
2 DERIVED t NULL ref c2 c2 5 const 2 100.00 Using where; Using index
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select '3' AS `a`,`test`.`q`.`id` AS `id`,`test`.`q`.`c1` AS `c1`,`test`.`q`.`c2` AS `c2` from `test`.`t` `q` where (`test`.`q`.`id` between 1 and 10)
|
|
DROP VIEW v1, v2;
|
|
DROP TABLE t;
|
|
# Bug #20443457 : Assert fail in calc_length_and_keyparts
|
|
CREATE TABLE t1(
|
|
pk INTEGER PRIMARY KEY,
|
|
k INTEGER,
|
|
KEY k(k),
|
|
nk INTEGER);
|
|
INSERT INTO t1 VALUES(1, 10, 100), (2, 20, 200);
|
|
set @optimizer_switch_saved=@@optimizer_switch;
|
|
set @@optimizer_switch='firstmatch=off';
|
|
explain SELECT t1.k
|
|
FROM t1 RIGHT JOIN
|
|
(SELECT t2.*
|
|
FROM t1 AS t2 JOIN t1 AS t3
|
|
ON TRUE
|
|
WHERE t3.k IN (SELECT k FROM t1 AS t4 WHERE k>1)
|
|
) AS dt
|
|
ON t1.pk = dt.pk;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t2 NULL index NULL PRIMARY 4 NULL 2 100.00 Using index
|
|
1 SIMPLE t1 NULL eq_ref PRIMARY PRIMARY 4 test.t2.pk 1 100.00 NULL
|
|
1 SIMPLE t4 NULL index k k 5 NULL 2 100.00 Using where; Using index; LooseScan
|
|
1 SIMPLE t3 NULL index k k 5 NULL 2 100.00 Using where; Using index; Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`k` AS `k` from `test`.`t1` `t2` join `test`.`t1` `t3` semi join (`test`.`t1` `t4`) left join `test`.`t1` on((`test`.`t1`.`pk` = `test`.`t2`.`pk`)) where ((`test`.`t3`.`k` = `test`.`t4`.`k`) and (`test`.`t4`.`k` > 1))
|
|
SELECT t1.k
|
|
FROM t1 RIGHT JOIN
|
|
(SELECT t2.*
|
|
FROM t1 AS t2 JOIN t1 AS t3
|
|
ON TRUE
|
|
WHERE t3.k IN (SELECT k FROM t1 AS t4 WHERE k>1)
|
|
) AS dt
|
|
ON t1.pk = dt.pk;
|
|
k
|
|
10
|
|
10
|
|
20
|
|
20
|
|
SET @@optimizer_switch=@optimizer_switch_saved;
|
|
DROP TABLE t1;
|
|
# Bug#20733540: Assertion failed: !table || (!table->read_set ...)
|
|
CREATE TABLE t1(a INTEGER, b VARCHAR(10));
|
|
INSERT INTO t1 VALUES (1,'a');
|
|
CREATE TABLE t2(c INTEGER);
|
|
INSERT INTO t2 VALUES(0);
|
|
SELECT 1
|
|
FROM (SELECT b FROM t1 WHERE a) AS dt1
|
|
RIGHT JOIN t2
|
|
ON c NOT BETWEEN 1 AND 2
|
|
NATURAL JOIN t1 AS t3;
|
|
1
|
|
1
|
|
DROP TABLE t1, t2;
|
|
# Bug#21512842: Sig 11 in check_column_grant_in_table_ref
|
|
CREATE TABLE t1 (
|
|
pk INTEGER,
|
|
col_varchar JSON NOT NULL,
|
|
PRIMARY KEY (pk)
|
|
);
|
|
CREATE TABLE t2 (
|
|
pk INTEGER,
|
|
col_date_key DATE NOT NULL,
|
|
PRIMARY KEY (pk)
|
|
);
|
|
set sql_mode='';
|
|
SELECT *
|
|
FROM (SELECT alias2.pk AS field1
|
|
FROM t1 AS alias1
|
|
LEFT OUTER JOIN t2 AS alias2
|
|
ON JSON_UNQUOTE(JSON_EXTRACT(alias1.col_varchar,'$.varc'))
|
|
COLLATE utf8mb4_general_ci = alias2.col_date_key
|
|
GROUP BY JSON_QUOTE(JSON_EXTRACT(field1,'$.intc'))
|
|
) AS dt;
|
|
field1
|
|
set sql_mode=default;
|
|
DROP TABLE t1, t2;
|
|
# Bug#21350125: Wrong results when ORDER BY is removed
|
|
CREATE TABLE t1 (
|
|
c1n varchar(1) NOT NULL,
|
|
c1k varchar(2) DEFAULT NULL,
|
|
KEY c1k (c1k)
|
|
);
|
|
INSERT INTO t1 VALUES ('j','jj'),('r','rr');
|
|
CREATE TABLE t2 (
|
|
c2k varchar(1) NOT NULL,
|
|
c2n varchar(2) DEFAULT NULL,
|
|
KEY c2k (c2k)
|
|
);
|
|
INSERT INTO t2 VALUES
|
|
('f','ff'),('t','tt'),('c','cc'),('c','cc'),('r','rr'),('k','kk');
|
|
CREATE TABLE `empty` (dummy INTEGER);
|
|
CREATE VIEW vr AS
|
|
SELECT t2.c2n AS v_field
|
|
FROM t1 RIGHT JOIN t2
|
|
ON t2.c2k = t1.c1k;
|
|
CREATE VIEW vl AS
|
|
SELECT t2.c2n AS v_field
|
|
FROM t2 LEFT JOIN t1
|
|
ON t2.c2k = t1.c1k;
|
|
SELECT alias1.dt_field AS field1
|
|
FROM (SELECT t2.c2n AS dt_field
|
|
FROM t1 RIGHT JOIN t2
|
|
ON t2.c2k = t1.c1k
|
|
) AS alias1
|
|
RIGHT JOIN t2 AS alias2
|
|
ON alias2.c2n = alias1.dt_field;
|
|
field1
|
|
ff
|
|
tt
|
|
cc
|
|
cc
|
|
cc
|
|
cc
|
|
rr
|
|
kk
|
|
prepare s from 'SELECT alias1.dt_field AS field1
|
|
FROM (SELECT t2.c2n AS dt_field
|
|
FROM t1 RIGHT JOIN t2
|
|
ON t2.c2k = t1.c1k
|
|
) AS alias1
|
|
RIGHT JOIN t2 AS alias2
|
|
ON alias2.c2n = alias1.dt_field';
|
|
execute s;
|
|
field1
|
|
ff
|
|
tt
|
|
cc
|
|
cc
|
|
cc
|
|
cc
|
|
rr
|
|
kk
|
|
deallocate prepare s;
|
|
SELECT alias1.dt_field AS field1
|
|
FROM (SELECT t2.c2n AS dt_field
|
|
FROM t2 LEFT JOIN t1
|
|
ON t2.c2k = t1.c1k
|
|
) AS alias1
|
|
RIGHT JOIN t2 AS alias2
|
|
ON alias2.c2n = alias1.dt_field;
|
|
field1
|
|
ff
|
|
tt
|
|
cc
|
|
cc
|
|
cc
|
|
cc
|
|
rr
|
|
kk
|
|
prepare s from 'SELECT alias1.dt_field AS field1
|
|
FROM (SELECT t2.c2n AS dt_field
|
|
FROM t2 LEFT JOIN t1
|
|
ON t2.c2k = t1.c1k
|
|
) AS alias1
|
|
RIGHT JOIN t2 AS alias2
|
|
ON alias2.c2n = alias1.dt_field';
|
|
execute s;
|
|
field1
|
|
ff
|
|
tt
|
|
cc
|
|
cc
|
|
cc
|
|
cc
|
|
rr
|
|
kk
|
|
deallocate prepare s;
|
|
SELECT alias1.v_field AS field1
|
|
FROM vl AS alias1
|
|
RIGHT JOIN t2 AS alias2
|
|
ON alias2.c2n = alias1.v_field;
|
|
field1
|
|
ff
|
|
tt
|
|
cc
|
|
cc
|
|
cc
|
|
cc
|
|
rr
|
|
kk
|
|
SELECT alias1.v_field AS field1
|
|
FROM vr AS alias1
|
|
RIGHT JOIN t2 AS alias2
|
|
ON alias2.c2n = alias1.v_field;
|
|
field1
|
|
ff
|
|
tt
|
|
cc
|
|
cc
|
|
cc
|
|
cc
|
|
rr
|
|
kk
|
|
SELECT alias1.dt_field AS field1
|
|
FROM (SELECT t2.c2n AS dt_field
|
|
FROM t1 RIGHT JOIN
|
|
(`empty` RIGHT JOIN t2
|
|
ON TRUE)
|
|
ON t2.c2k = t1.c1k
|
|
) AS alias1
|
|
RIGHT JOIN t2 AS alias2
|
|
ON alias2.c2n = alias1.dt_field;
|
|
field1
|
|
ff
|
|
tt
|
|
cc
|
|
cc
|
|
cc
|
|
cc
|
|
rr
|
|
kk
|
|
SELECT alias1.dt_field AS field1
|
|
FROM (SELECT t2.c2n AS dt_field
|
|
FROM t1 RIGHT JOIN
|
|
(t2 LEFT JOIN `empty`
|
|
ON TRUE)
|
|
ON t2.c2k = t1.c1k
|
|
) AS alias1
|
|
RIGHT JOIN t2 AS alias2
|
|
ON alias2.c2n = alias1.dt_field;
|
|
field1
|
|
ff
|
|
tt
|
|
cc
|
|
cc
|
|
cc
|
|
cc
|
|
rr
|
|
kk
|
|
DROP VIEW vl, vr;
|
|
DROP TABLE t1, t2, `empty`;
|
|
# Bug#22239474: Unexpected error 1093 on nested subquery for update
|
|
CREATE TABLE t1 (id INTEGER PRIMARY KEY, d INTEGER);
|
|
INSERT INTO t1 VALUES(1, 10), (2, 20);
|
|
explain DELETE FROM t1
|
|
WHERE id IN (SELECT * FROM (SELECT id FROM t1) AS dt);
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 DELETE t1 NULL ALL NULL NULL NULL NULL 2 100.00 Using where
|
|
2 DEPENDENT SUBQUERY <derived3> NULL index_subquery <auto_key0> <auto_key0> 4 func 2 100.00 Using index
|
|
3 DERIVED t1 NULL index NULL PRIMARY 4 NULL 2 100.00 Using index
|
|
Warnings:
|
|
Note 1003 delete from `test`.`t1` where <in_optimizer>(`test`.`t1`.`id`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`id`) in dt on <auto_key0>)))
|
|
DELETE FROM t1
|
|
WHERE id IN (SELECT * FROM (SELECT id FROM t1) AS dt);
|
|
INSERT INTO t1 VALUES(1, 10), (2, 20);
|
|
explain UPDATE t1 SET d= NULL
|
|
WHERE id IN (SELECT * FROM (SELECT id FROM t1) AS dt);
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 UPDATE t1 NULL ALL NULL NULL NULL NULL 2 100.00 Using where
|
|
2 DEPENDENT SUBQUERY <derived3> NULL index_subquery <auto_key0> <auto_key0> 4 func 2 100.00 Using index
|
|
3 DERIVED t1 NULL index NULL PRIMARY 4 NULL 2 100.00 Using index
|
|
Warnings:
|
|
Note 1003 update `test`.`t1` set `test`.`t1`.`d` = NULL where <in_optimizer>(`test`.`t1`.`id`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`id`) in dt on <auto_key0>)))
|
|
UPDATE t1 SET d= NULL
|
|
WHERE id IN (SELECT * FROM (SELECT id FROM t1) AS dt);
|
|
explain INSERT INTO t1 SELECT id+10, d FROM t1;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 INSERT t1 NULL ALL NULL NULL NULL NULL NULL NULL NULL
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 100.00 Using temporary
|
|
Warnings:
|
|
Note 1003 insert into `test`.`t1` /* select#1 */ select sql_buffer_result (`test`.`t1`.`id` + 10) AS `id+10`,`test`.`t1`.`d` AS `d` from `test`.`t1`
|
|
INSERT INTO t1 SELECT id+10, d FROM t1;
|
|
explain INSERT INTO t1 SELECT id+20, d FROM (SELECT * FROM t1) AS dt;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 INSERT t1 NULL ALL NULL NULL NULL NULL NULL NULL NULL
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 4 100.00 Using temporary
|
|
Warnings:
|
|
Note 1003 insert into `test`.`t1` /* select#1 */ select sql_buffer_result (`test`.`t1`.`id` + 20) AS `id+20`,`test`.`t1`.`d` AS `d` from `test`.`t1`
|
|
INSERT INTO t1 SELECT id+20, d FROM (SELECT * FROM t1) AS dt;
|
|
DROP TABLE t1;
|
|
# Bug#22223202: Query with double nested subquery much slower in 5.7
|
|
CREATE TABLE t1 (
|
|
t1_rowid bigint unsigned NOT NULL,
|
|
t1_co varchar(1) NOT NULL,
|
|
t1_inv_date char(3) NOT NULL,
|
|
UNIQUE KEY rowid (t1_rowid),
|
|
KEY invdate (t1_co, t1_inv_date)
|
|
) charset latin1;
|
|
INSERT INTO t1 VALUES (505975,'D','s:1'),(505981,'D','s:1'),(505869,'D','s:3');
|
|
CREATE TABLE t2 (
|
|
t2_rowid bigint unsigned NOT NULL,
|
|
t2_end_date char(3) NOT NULL,
|
|
UNIQUE KEY rowid (t2_rowid),
|
|
KEY end_date (t2_end_date)
|
|
) charset latin1;
|
|
INSERT INTO t2 VALUES (9,'_:L'), (10,'_<2'), (11,'_<N');
|
|
explain SELECT t1_inv_date
|
|
FROM t1 LEFT JOIN
|
|
(SELECT curr.t2_end_date As end_date,
|
|
(SELECT prev.t2_end_date
|
|
FROM t2 AS prev
|
|
WHERE prev.t2_end_date < curr.t2_end_date
|
|
ORDER BY prev.t2_end_date DESC LIMIT 1) AS prev_end_date
|
|
FROM t2 AS curr
|
|
WHERE curr.t2_end_date >= 's:1'
|
|
) AS periods
|
|
ON periods.prev_end_date < t1_inv_date AND
|
|
periods.end_date >= t1_inv_date;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 NULL index NULL invdate 6 NULL 3 100.00 Using index
|
|
1 PRIMARY <derived2> NULL ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (Block Nested Loop)
|
|
2 DERIVED curr NULL index end_date end_date 3 NULL 3 100.00 Using where; Using index
|
|
3 DEPENDENT SUBQUERY prev NULL index end_date end_date 3 NULL 1 33.33 Using where; Backward index scan; Using index
|
|
Warnings:
|
|
Note 1276 Field or reference 'test.curr.t2_end_date' of SELECT #3 was resolved in SELECT #2
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`t1_inv_date` AS `t1_inv_date` from `test`.`t1` left join (/* select#2 */ select `test`.`curr`.`t2_end_date` AS `end_date`,(/* select#3 */ select `test`.`prev`.`t2_end_date` from `test`.`t2` `prev` where (`test`.`prev`.`t2_end_date` < `test`.`curr`.`t2_end_date`) order by `test`.`prev`.`t2_end_date` desc limit 1) AS `prev_end_date` from `test`.`t2` `curr` where (`test`.`curr`.`t2_end_date` >= 's:1')) `periods` on(((`periods`.`prev_end_date` < `test`.`t1`.`t1_inv_date`) and (`periods`.`end_date` >= `test`.`t1`.`t1_inv_date`))) where true
|
|
SELECT t1_inv_date
|
|
FROM t1 LEFT JOIN
|
|
(SELECT curr.t2_end_date As end_date,
|
|
(SELECT prev.t2_end_date
|
|
FROM t2 AS prev
|
|
WHERE prev.t2_end_date < curr.t2_end_date
|
|
ORDER BY prev.t2_end_date DESC LIMIT 1) AS prev_end_date
|
|
FROM t2 AS curr
|
|
WHERE curr.t2_end_date >= 's:1'
|
|
) AS periods
|
|
ON periods.prev_end_date < t1_inv_date AND
|
|
periods.end_date >= t1_inv_date;
|
|
t1_inv_date
|
|
s:1
|
|
s:1
|
|
s:3
|
|
explain SELECT /*+ MERGE(periods) */ t1_inv_date
|
|
FROM t1 LEFT JOIN
|
|
(SELECT curr.t2_end_date As end_date,
|
|
(SELECT prev.t2_end_date
|
|
FROM t2 AS prev
|
|
WHERE prev.t2_end_date < curr.t2_end_date
|
|
ORDER BY prev.t2_end_date DESC LIMIT 1) AS prev_end_date
|
|
FROM t2 AS curr
|
|
WHERE curr.t2_end_date >= 's:1'
|
|
) AS periods
|
|
ON periods.prev_end_date < t1_inv_date AND
|
|
periods.end_date >= t1_inv_date;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 NULL index NULL invdate 6 NULL 3 100.00 Using index
|
|
1 PRIMARY curr NULL index end_date end_date 3 NULL 3 100.00 Using where; Using index; Using join buffer (Block Nested Loop)
|
|
3 DEPENDENT SUBQUERY prev NULL index end_date end_date 3 NULL 1 33.33 Using where; Backward index scan; Using index
|
|
Warnings:
|
|
Note 1276 Field or reference 'test.curr.t2_end_date' of SELECT #3 was resolved in SELECT #2
|
|
Note 1003 /* select#1 */ select /*+ MERGE(`periods`@`select#1`) */ `test`.`t1`.`t1_inv_date` AS `t1_inv_date` from `test`.`t1` left join (`test`.`t2` `curr`) on((((/* select#3 */ select `test`.`prev`.`t2_end_date` from `test`.`t2` `prev` where (`test`.`prev`.`t2_end_date` < `test`.`curr`.`t2_end_date`) order by `test`.`prev`.`t2_end_date` desc limit 1) < `test`.`t1`.`t1_inv_date`) and (`test`.`curr`.`t2_end_date` >= `test`.`t1`.`t1_inv_date`) and (`test`.`curr`.`t2_end_date` >= 's:1'))) where true
|
|
SELECT /*+ MERGE(periods) */ t1_inv_date
|
|
FROM t1 LEFT JOIN
|
|
(SELECT curr.t2_end_date As end_date,
|
|
(SELECT prev.t2_end_date
|
|
FROM t2 AS prev
|
|
WHERE prev.t2_end_date < curr.t2_end_date
|
|
ORDER BY prev.t2_end_date DESC LIMIT 1) AS prev_end_date
|
|
FROM t2 AS curr
|
|
WHERE curr.t2_end_date >= 's:1'
|
|
) AS periods
|
|
ON periods.prev_end_date < t1_inv_date AND
|
|
periods.end_date >= t1_inv_date;
|
|
t1_inv_date
|
|
s:1
|
|
s:1
|
|
s:3
|
|
DROP TABLE t1, t2;
|
|
# Bug#22176604: Wrong result on outer join with uncorrelated subquery
|
|
CREATE TABLE t1 (a INT, KEY(a));
|
|
INSERT INTO t1 VALUES (1), (NULL);
|
|
CREATE TABLE t2 (b INT, KEY(b));
|
|
INSERT INTO t2 VALUES (7), (NULL), (1), (5), (8), (6), (4), (0), (3), (NULL);
|
|
CREATE TABLE t3 (c INT);
|
|
INSERT INTO t3 VALUES (NULL), (1), (5);
|
|
explain SELECT * FROM t1 LEFT JOIN (
|
|
SELECT t3.* FROM t2 INNER JOIN t3 ON b = c
|
|
) AS sq ON a <= sq.c;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 NULL index NULL a 5 NULL 2 100.00 Using index
|
|
1 SIMPLE t3 NULL ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
1 SIMPLE t2 NULL ref b b 5 test.t3.c 2 100.00 Using index
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t3`.`c` AS `c` from `test`.`t1` left join (`test`.`t2` join `test`.`t3`) on(((`test`.`t2`.`b` = `test`.`t3`.`c`) and (`test`.`t1`.`a` <= `test`.`t3`.`c`))) where true
|
|
SELECT * FROM t1 LEFT JOIN (
|
|
SELECT t3.* FROM t2 INNER JOIN t3 ON b = c
|
|
) AS sq ON a <= sq.c;
|
|
a c
|
|
NULL NULL
|
|
1 1
|
|
1 5
|
|
DROP TABLE t1, t2, t3;
|
|
# Bug#22343301: Error 1093 (HY000): You can't specify target table'.'
|
|
# for update in FROM clause
|
|
CREATE TABLE users (
|
|
id int unsigned AUTO_INCREMENT,
|
|
name varchar(255),
|
|
position int DEFAULT NULL,
|
|
PRIMARY KEY (id));
|
|
INSERT INTO users (name, position) VALUES
|
|
('user1','1'), ('user2','2'), ('user3','3'), ('user4','4'), ('user5','5');
|
|
# Single-table update with non-mergeable derived table
|
|
UPDATE users
|
|
SET position = (SELECT COUNT(pos) + 1
|
|
FROM (SELECT DISTINCT position AS pos FROM users) AS t2
|
|
WHERE t2.pos < users.position)
|
|
WHERE id = 3;
|
|
# Single-table update with mergeable derived table
|
|
# (but not merged due to being used in a subquery of an UPDATE statement)
|
|
UPDATE users
|
|
SET position = (SELECT COUNT(pos) + 1
|
|
FROM (SELECT position AS pos FROM users) AS t2
|
|
WHERE t2.pos < users.position)
|
|
WHERE id = 3;
|
|
# Multi-table update with non-mergeable derived table
|
|
UPDATE users, (SELECT 1) AS dummy
|
|
SET position = (SELECT COUNT(pos) + 1
|
|
FROM (SELECT DISTINCT position AS pos FROM users) AS t2
|
|
WHERE t2.pos < users.position)
|
|
WHERE id = 3;
|
|
# Multi-table update with mergeable derived table
|
|
UPDATE users, (SELECT 1) AS dummy
|
|
SET position = (SELECT COUNT(pos) + 1
|
|
FROM (SELECT position AS pos FROM users) AS t2
|
|
WHERE t2.pos < users.position)
|
|
WHERE id = 3;
|
|
UPDATE users
|
|
SET position = (SELECT COUNT(t2.position) + 1
|
|
FROM users AS t2
|
|
WHERE t2.position < users.position)
|
|
WHERE id = 3;
|
|
ERROR HY000: You can't specify target table 'users' for update in FROM clause
|
|
UPDATE users, (SELECT 1) AS dummy
|
|
SET position = (SELECT COUNT(t2.position) + 1
|
|
FROM users AS t2
|
|
WHERE t2.position < users.position)
|
|
WHERE id = 3;
|
|
ERROR HY000: You can't specify target table 'users' for update in FROM clause
|
|
DROP TABLE users;
|
|
# Bug#22783011 assertion failed: base_select != removed_select &&
|
|
# aggr_select != removed_select
|
|
CREATE TABLE t(a INTEGER) engine=innodb;
|
|
INSERT INTO t VALUES(1);
|
|
# Per MySQL rules, SUM(1) is aggregated in top query
|
|
# (can't be in WHERE, in FROM)
|
|
SELECT (SELECT 1 FROM (SELECT 1 FROM t WHERE SUM(1)) AS t);
|
|
(SELECT 1 FROM (SELECT 1 FROM t WHERE SUM(1)) AS t)
|
|
1
|
|
SELECT (SELECT 1 FROM (SELECT 1 FROM t WHERE SUM(0)) AS t);
|
|
(SELECT 1 FROM (SELECT 1 FROM t WHERE SUM(0)) AS t)
|
|
NULL
|
|
DROP TABLE t;
|
|
# Bug#23074801: Delete from joined tables with where using derived table
|
|
# fails with error 1093
|
|
CREATE TABLE t1 (id INTEGER, d1 INTEGER);
|
|
CREATE TABLE t2 (id INTEGER, d2 INTEGER);
|
|
DELETE t1, t2
|
|
FROM t1 LEFT JOIN t2 ON t1.id = t2.id
|
|
WHERE t1.id IN (SELECT * FROM (SELECT id FROM t1) AS t1sub);
|
|
DROP TABLE t1, t2;
|
|
# Bug#22967439: Mysql 5.7 vs 5.6 incorrect SELECT statement result
|
|
CREATE TABLE t1
|
|
(integer1 INTEGER NULL,
|
|
integer2 INTEGER NULL,
|
|
varchar1 VARCHAR(255) NULL);
|
|
CREATE TABLE t2
|
|
(integer1 INTEGER NULL,
|
|
integer2 INTEGER NULL,
|
|
varchar1 VARCHAR(255) NULL,
|
|
varchar2 VARCHAR(255) NULL);
|
|
INSERT INTO t1 VALUES
|
|
(11,12,'test1'), (21,22,'test2'), (31,32,'test3');
|
|
INSERT INTO t2 VALUES
|
|
(11,12,'test1','test12'), (21,22,'test2','test22'), (31,32,'test3','test32');
|
|
SELECT g_t3.g_f1, g_t3.g_f2, g_t3.g_f3
|
|
FROM (SELECT g_t0.integer1 AS g_f1,
|
|
g_t0.integer2 AS g_f2,
|
|
g_t0.varchar1 AS g_f3
|
|
FROM t1 g_t0
|
|
) g_t3
|
|
GROUP BY g_t3.g_f1, g_t3.g_f2, g_t3.g_f3
|
|
HAVING g_t3.g_f3 = (select varchar1
|
|
from t2
|
|
where integer1 = g_t3.g_f1
|
|
);
|
|
g_f1 g_f2 g_f3
|
|
11 12 test1
|
|
21 22 test2
|
|
31 32 test3
|
|
DROP TABLE t1, t2;
|
|
# Bug#24364448: Assert m_opr_handle != null in
|
|
# ha_innobase_inmem::keys_to_use_for_scanning
|
|
CREATE TABLE K (col_int int(11), col_varchar varchar(255)) charset latin1;
|
|
Warnings:
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
INSERT INTO K VALUES (NULL,'m'), (NULL,'z');
|
|
CREATE TABLE H (col_varchar varchar(255)) charset latin1;
|
|
INSERT INTO H VALUES ('m'), ('z');
|
|
SET @optimizer_switch_saved= @@optimizer_switch;
|
|
SET @@optimizer_switch="derived_merge=off";
|
|
FLUSH STATUS;
|
|
SELECT t1.col_int
|
|
FROM (SELECT * FROM K) t1 JOIN (SELECT * FROM H) t2 USING(col_varchar)
|
|
WHERE t1.col_int IS NULL
|
|
ORDER BY t1.col_int;
|
|
col_int
|
|
NULL
|
|
NULL
|
|
SHOW STATUS LIKE 'Created_tmp%';
|
|
Variable_name Value
|
|
Created_tmp_disk_tables 0
|
|
Created_tmp_files 0
|
|
Created_tmp_tables 2
|
|
SET @@optimizer_switch=@optimizer_switch_saved;
|
|
DROP TABLE K, H;
|
|
#
|
|
# Bug #25343335: DERIVED TABLE SELECT LIST'S REFERENCE TO ALIAS CAUSES
|
|
# INCORRECT BEHAVIOR
|
|
#
|
|
CREATE TABLE t1 (c11 int);
|
|
INSERT INTO t1 VALUES (1);
|
|
EXPLAIN SELECT *
|
|
FROM (SELECT (1) alias1,
|
|
(SELECT alias1) alias2
|
|
FROM t1) X ;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 NULL system NULL NULL NULL NULL 1 100.00 NULL
|
|
Warnings:
|
|
Note 1249 Select 3 was reduced during optimization
|
|
Note 1003 /* select#1 */ select 1 AS `alias1`,`alias1` AS `alias2` from dual
|
|
SELECT *
|
|
FROM (SELECT (1) alias1,
|
|
(SELECT alias1) alias2
|
|
FROM t1) X ;
|
|
alias1 alias2
|
|
1 1
|
|
PREPARE xx FROM 'SELECT *
|
|
FROM (SELECT (1) alias1,
|
|
(SELECT alias1) alias2
|
|
FROM t1) X ';
|
|
EXECUTE xx;
|
|
alias1 alias2
|
|
1 1
|
|
EXECUTE xx;
|
|
alias1 alias2
|
|
1 1
|
|
EXECUTE xx;
|
|
alias1 alias2
|
|
1 1
|
|
EXPLAIN SELECT alias2
|
|
FROM (SELECT (1) alias1,
|
|
(SELECT alias1) alias2
|
|
FROM t1) X ;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 NULL system NULL NULL NULL NULL 1 100.00 NULL
|
|
Warnings:
|
|
Note 1249 Select 3 was reduced during optimization
|
|
Note 1003 /* select#1 */ select `alias1` AS `alias2` from dual
|
|
SELECT alias2
|
|
FROM (SELECT (1) alias1,
|
|
(SELECT alias1) alias2
|
|
FROM t1) X ;
|
|
alias2
|
|
1
|
|
PREPARE yy FROM 'SELECT alias2
|
|
FROM (SELECT (1) alias1,
|
|
(SELECT alias1) alias2
|
|
FROM t1) X ';
|
|
EXECUTE yy;
|
|
alias2
|
|
1
|
|
EXECUTE yy;
|
|
alias2
|
|
1
|
|
EXECUTE yy;
|
|
alias2
|
|
1
|
|
DROP TABLE t1;
|
|
#
|
|
# Bug#26596977: ASSERT `!(USED_TABS & (~READ_TABLES & ~FILTER_FOR_TABLE))'
|
|
# FAILED IN ITEM_FUNC
|
|
#
|
|
CREATE TABLE t1 (
|
|
col_varchar_key varchar(1) ,
|
|
pk int(11) NOT NULL AUTO_INCREMENT,
|
|
PRIMARY KEY (pk),
|
|
KEY col_varchar_key (col_varchar_key)
|
|
) ENGINE=MyISAM;
|
|
Warnings:
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
CREATE TABLE t2 (
|
|
col_int int(11) ,
|
|
pk int(11) NOT NULL AUTO_INCREMENT,
|
|
col_varchar varchar(1) ,
|
|
col_varchar_key varchar(1) ,
|
|
PRIMARY KEY (pk)
|
|
) ENGINE=MyISAM;
|
|
Warnings:
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
INSERT INTO t2 VALUES (4,1,'s','r'), (9,19,'p','a');
|
|
CREATE TABLE t3 (
|
|
pk int(11) NOT NULL AUTO_INCREMENT,
|
|
col_int int(11) ,
|
|
col_varchar_key varchar(1) ,
|
|
col_varchar varchar(1) ,
|
|
PRIMARY KEY (pk),
|
|
KEY col_varchar_key (col_varchar_key)
|
|
) ENGINE=MyISAM;
|
|
Warnings:
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
INSERT INTO t3 VALUES (100,2,'g',NULL);
|
|
EXPLAIN SELECT table1.col_int
|
|
FROM t3 AS table1
|
|
LEFT JOIN (
|
|
SELECT subquery1_t1.*
|
|
FROM t1 AS subquery1_t1
|
|
RIGHT JOIN t2 AS subquery1_t2
|
|
ON (subquery1_t2.col_varchar_key = subquery1_t1.col_varchar_key)
|
|
) AS table3
|
|
ON (table3.col_varchar_key = table1.col_varchar_key)
|
|
WHERE table3.col_varchar_key IN (
|
|
SELECT subquery2_t3.col_varchar
|
|
FROM t3 AS subquery2_t3
|
|
WHERE subquery2_t3.pk < table3.pk
|
|
);
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
|
Warnings:
|
|
Note 1276 Field or reference 'table3.pk' of SELECT #3 was resolved in SELECT #1
|
|
Note 1003 /* select#1 */ select '2' AS `col_int` from `test`.`t2` `subquery1_t2` join `test`.`t1` `subquery1_t1` semi join (`test`.`t3` `subquery2_t3`) where ((`test`.`subquery2_t3`.`pk` < NULL) and multiple equal('g', NULL, `test`.`subquery2_t3`.`col_varchar`, `test`.`subquery1_t2`.`col_varchar_key`))
|
|
SELECT table1.col_int
|
|
FROM t3 AS table1
|
|
LEFT JOIN (
|
|
SELECT subquery1_t1.*
|
|
FROM t1 AS subquery1_t1
|
|
RIGHT JOIN t2 AS subquery1_t2
|
|
ON (subquery1_t2.col_varchar_key = subquery1_t1.col_varchar_key)
|
|
) AS table3
|
|
ON (table3.col_varchar_key = table1.col_varchar_key)
|
|
WHERE table3.col_varchar_key IN (
|
|
SELECT subquery2_t3.col_varchar
|
|
FROM t3 AS subquery2_t3
|
|
WHERE subquery2_t3.pk < table3.pk
|
|
);
|
|
col_int
|
|
DROP TABLE t1, t2, t3;
|
|
#
|
|
# Bug #26618455: ASSERT 'KEYPARTS > 0' IN CALC_LENGTH_AND_KEYPARTS()
|
|
# WITHOUT FIRSTMATCH
|
|
#
|
|
CREATE TABLE t1 (
|
|
col_int int(11) DEFAULT NULL,
|
|
pk int(11) NOT NULL AUTO_INCREMENT,
|
|
col_varchar_key varchar(1) DEFAULT NULL,
|
|
col_varchar varchar(1) DEFAULT NULL,
|
|
col_int_key int(11) DEFAULT NULL,
|
|
PRIMARY KEY (pk),
|
|
KEY col_int_key (col_int_key)
|
|
) ENGINE=MyISAM;
|
|
Warnings:
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
INSERT INTO t1 VALUES (0,1,'i','n',125);
|
|
INSERT INTO t1 VALUES (3,20,'b','o',0);
|
|
CREATE TABLE t2 (
|
|
col_int_key int(11) DEFAULT NULL,
|
|
col_varchar_key varchar(1) DEFAULT NULL,
|
|
col_varchar varchar(1) DEFAULT NULL,
|
|
col_int int(11) DEFAULT NULL,
|
|
pk int(11) NOT NULL AUTO_INCREMENT,
|
|
PRIMARY KEY (pk),
|
|
KEY col_varchar_key (col_varchar_key)
|
|
) ENGINE=MyISAM;
|
|
Warnings:
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
INSERT INTO t2 VALUES (3,'y','p',4,1);
|
|
CREATE TABLE t3 (
|
|
col_int int(11) DEFAULT NULL,
|
|
col_varchar varchar(1) DEFAULT NULL,
|
|
pk int(11) NOT NULL AUTO_INCREMENT,
|
|
col_varchar_key varchar(1) DEFAULT NULL,
|
|
col_int_key int(11) DEFAULT NULL,
|
|
PRIMARY KEY (pk),
|
|
KEY col_int_key (col_int_key)
|
|
) ENGINE=MyISAM;
|
|
Warnings:
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
CREATE TABLE t4 ( col_int int(11) DEFAULT NULL,
|
|
col_varchar varchar(1) DEFAULT NULL,
|
|
col_int_key int(11) DEFAULT NULL,
|
|
col_varchar_key varchar(1) DEFAULT NULL,
|
|
pk int(11) NOT NULL AUTO_INCREMENT,
|
|
PRIMARY KEY (pk),
|
|
KEY col_varchar_key (col_varchar_key)
|
|
) ENGINE=MyISAM
|
|
;
|
|
Warnings:
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
INSERT INTO t4 VALUES (7,'k',9,'z',20);
|
|
SET optimizer_switch = 'firstmatch=off';
|
|
EXPLAIN SELECT
|
|
table2.col_int_key AS field3
|
|
FROM
|
|
(
|
|
SELECT subquery2_t2.*
|
|
FROM t1 AS subquery2_t1
|
|
INNER JOIN t2 AS subquery2_t2
|
|
ON (subquery2_t2.pk = subquery2_t1.col_int)
|
|
) AS table1
|
|
RIGHT OUTER JOIN (
|
|
SELECT subquery3_t1.*
|
|
FROM t2 AS subquery3_t1
|
|
) AS table2
|
|
ON (table1.col_varchar_key = table2.col_varchar_key)
|
|
WHERE table1.col_varchar_key IN (
|
|
SELECT subquery4_t1.col_varchar AS subquery4_field1
|
|
FROM t3 AS subquery4_t1);
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE subquery2_t2 NULL system PRIMARY,col_varchar_key NULL NULL NULL 1 100.00 NULL
|
|
1 SIMPLE subquery3_t1 NULL system col_varchar_key NULL NULL NULL 1 100.00 NULL
|
|
1 SIMPLE <subquery4> NULL eq_ref <auto_distinct_key> <auto_distinct_key> 7 const 1 100.00 Using where
|
|
1 SIMPLE subquery2_t1 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; Using join buffer (Block Nested Loop)
|
|
4 MATERIALIZED subquery4_t1 NULL ALL NULL NULL NULL NULL 0 0.00 Using where
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select '3' AS `field3` from `test`.`t1` `subquery2_t1` semi join (`test`.`t3` `subquery4_t1`) where ((`test`.`subquery2_t1`.`col_int` = '1') and (`<subquery4>`.`subquery4_field1` = 'y') and (`test`.`subquery4_t1`.`col_varchar` = 'y'))
|
|
SELECT
|
|
table2.col_int_key AS field3
|
|
FROM
|
|
(
|
|
SELECT subquery2_t2.*
|
|
FROM t1 AS subquery2_t1
|
|
INNER JOIN t2 AS subquery2_t2
|
|
ON (subquery2_t2.pk = subquery2_t1.col_int)
|
|
) AS table1
|
|
RIGHT OUTER JOIN (
|
|
SELECT subquery3_t1.*
|
|
FROM t2 AS subquery3_t1
|
|
) AS table2
|
|
ON (table1.col_varchar_key = table2.col_varchar_key)
|
|
WHERE table1.col_varchar_key IN (
|
|
SELECT subquery4_t1.col_varchar AS subquery4_field1
|
|
FROM t3 AS subquery4_t1);
|
|
field3
|
|
SET optimizer_switch = default;
|
|
DROP TABLE t1, t2, t3, t4;
|
|
# Bug#26798989: Sig 11 in find_table_in_global_list
|
|
CREATE TABLE t1(a INTEGER);
|
|
CREATE TABLE t2(a INTEGER);
|
|
UPDATE t1
|
|
SET a=5
|
|
WHERE a IN (SELECT a FROM t2
|
|
ORDER BY (SELECT a FROM (SELECT SUM(a) FROM t1) AS dt));
|
|
DROP TABLE t1, t2;
|
|
|