Commit 64351fea authored by Sergey Petrunya's avatar Sergey Petrunya

Merge

parents e6d01ad3 47861a65
......@@ -989,10 +989,10 @@ SELECT * FROM t2 RIGHT JOIN (SELECT * FROM t1) AS t ON t.a != 0
WHERE t.a IN (SELECT b FROM t1);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1 100.00
1 PRIMARY t1 system NULL NULL NULL NULL 1 100.00
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00 Using where
3 DEPENDENT SUBQUERY t1 system NULL NULL NULL NULL 1 100.00
Warnings:
Note 1003 select `test`.`t2`.`a` AS `a`,0 AS `a`,0 AS `b` from `test`.`t1` left join `test`.`t2` on((0 <> 0)) where <expr_cache><0>(<in_optimizer>(0,<exists>(select 0 from `test`.`t1` where (<cache>(0) = 0))))
Note 1003 select `test`.`t2`.`a` AS `a`,0 AS `a`,0 AS `b` from `test`.`t1` semi join (`test`.`t1`) left join `test`.`t2` on((0 <> 0)) where 1
SELECT * FROM t2 RIGHT JOIN v1 AS t ON t.a != 0
WHERE t.a IN (SELECT b FROM t1);
a a b
......@@ -1002,10 +1002,10 @@ SELECT * FROM t2 RIGHT JOIN v1 AS t ON t.a != 0
WHERE t.a IN (SELECT b FROM t1);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1 100.00
1 PRIMARY t1 system NULL NULL NULL NULL 1 100.00
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00 Using where
2 DEPENDENT SUBQUERY t1 system NULL NULL NULL NULL 1 100.00
Warnings:
Note 1003 select `test`.`t2`.`a` AS `a`,0 AS `a`,0 AS `b` from `test`.`t1` left join `test`.`t2` on((0 <> 0)) where <expr_cache><0>(<in_optimizer>(0,<exists>(select 0 from `test`.`t1` where (<cache>(0) = 0))))
Note 1003 select `test`.`t2`.`a` AS `a`,0 AS `a`,0 AS `b` from `test`.`t1` semi join (`test`.`t1`) left join `test`.`t2` on((0 <> 0)) where 1
DROP VIEW v1;
DROP TABLE t1,t2;
#
......@@ -1147,7 +1147,7 @@ EXPLAIN
SELECT a FROM t1 WHERE (a,b) IN (SELECT * FROM v1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
2 DEPENDENT SUBQUERY <derived3> index_subquery key0 key0 10 func,func 2 Using where
1 PRIMARY <derived3> ref key0 key0 10 test.t1.a,test.t1.b 2 FirstMatch(t1)
3 DERIVED t2 ALL NULL NULL NULL NULL 6 Using temporary; Using filesort
SELECT * FROM v2;
a b
......@@ -1167,7 +1167,7 @@ EXPLAIN
SELECT a FROM t1 WHERE (a,b) IN (SELECT * FROM v2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
2 DEPENDENT SUBQUERY <derived3> index_subquery key0 key0 10 func,func 2 Using where
1 PRIMARY <derived3> ref key0 key0 10 test.t1.a,test.t1.b 2 FirstMatch(t1)
3 DERIVED t2 ALL NULL NULL NULL NULL 6
4 UNION t3 ALL NULL NULL NULL NULL 4
NULL UNION RESULT <union3,4> ALL NULL NULL NULL NULL NULL
......@@ -1478,9 +1478,9 @@ SELECT * FROM t3
WHERE t3.b IN (SELECT v1.b FROM v1, t2
WHERE t2.c = v1.c AND t2.c = v1.b AND v1.b = t3.c);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where
2 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 1
2 DEPENDENT SUBQUERY <derived3> ALL NULL NULL NULL NULL 3 Using where
1 PRIMARY t2 system NULL NULL NULL NULL 1
1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; Start temporary
1 PRIMARY <derived3> ALL NULL NULL NULL NULL 3 Using where; End temporary; Using join buffer (flat, BNL join)
3 DERIVED t1 ALL NULL NULL NULL NULL 3
SELECT * FROM t3
WHERE t3.b IN (SELECT v1.b FROM v1, t2
......@@ -1493,9 +1493,9 @@ SELECT * FROM t3
WHERE t3.b IN (SELECT v1.b FROM v1, t2
WHERE t2.c = v1.c AND t2.c = v1.b AND v1.b = t3.c);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where
2 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 1
2 DEPENDENT SUBQUERY <derived3> ref key1 key1 10 const,const 0 Using where
1 PRIMARY t2 system NULL NULL NULL NULL 1
1 PRIMARY <derived3> ref key1 key1 10 const,const 0 Start temporary
1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (flat, BNL join)
3 DERIVED t1 ALL NULL NULL NULL NULL 3
SELECT * FROM t3
WHERE t3.b IN (SELECT v1.b FROM v1, t2
......@@ -1517,7 +1517,7 @@ EXPLAIN
SELECT * FROM t1 WHERE t1.b IN (SELECT v2.a FROM v2 WHERE v2.b = t1.a);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
2 DEPENDENT SUBQUERY <derived3> ref key0 key0 5 test.t1.a 2 Using where
1 PRIMARY <derived3> ref key0 key0 10 test.t1.b,test.t1.a 2 FirstMatch(t1)
3 DERIVED t2 ALL NULL NULL NULL NULL 2
SELECT * FROM t1 WHERE t1.b IN (SELECT v2.a FROM v2 WHERE v2.b = t1.a);
a b
......
......@@ -199,16 +199,16 @@ insert into t2 values ('2001-01-01 1:1:1'), ('2001-01-01 1:1:1');
flush tables;
EXPLAIN SELECT OUTR.dt FROM t1 AS OUTR WHERE OUTR.dt IN (SELECT INNR.dt FROM t2 AS INNR WHERE OUTR.dt IS NULL );
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY OUTR ALL NULL NULL NULL NULL 2 Using where
2 DEPENDENT SUBQUERY INNR ALL NULL NULL NULL NULL 2 Using where
1 PRIMARY OUTR ALL NULL NULL NULL NULL 2 Using where; Start temporary
1 PRIMARY INNR ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (flat, BNL join)
flush tables;
SELECT OUTR.dt FROM t1 AS OUTR WHERE OUTR.dt IN (SELECT INNR.dt FROM t2 AS INNR WHERE OUTR.dt IS NULL );
dt
flush tables;
EXPLAIN SELECT OUTR.dt FROM t1 AS OUTR WHERE OUTR.dt IN ( SELECT INNR.dt FROM t2 AS INNR WHERE OUTR.t < '2005-11-13 7:41:31' );
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY OUTR ALL NULL NULL NULL NULL 2 Using where
2 DEPENDENT SUBQUERY INNR ALL NULL NULL NULL NULL 2 Using where
1 PRIMARY OUTR ALL NULL NULL NULL NULL 2 Using where; Start temporary
1 PRIMARY INNR ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (flat, BNL join)
flush tables;
SELECT OUTR.dt FROM t1 AS OUTR WHERE OUTR.dt IN ( SELECT INNR.dt FROM t2 AS INNR WHERE OUTR.t < '2005-11-13 7:41:31' );
dt
......
......@@ -1542,8 +1542,8 @@ id select_type table type possible_keys key key_len ref rows Extra
EXPLAIN SELECT 1 FROM t1 WHERE a IN
(SELECT a FROM t1 USE INDEX (i2) IGNORE INDEX (i2));
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 index NULL PRIMARY 4 NULL 144 Using where; Using index
2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 144 Using where
1 PRIMARY t1 index PRIMARY,i2 PRIMARY 4 NULL 144 Using index
1 PRIMARY t1 ALL NULL NULL NULL NULL 144 Using where; FirstMatch(t1)
CREATE TABLE t2 (a INT, b INT, KEY(a));
INSERT INTO t2 VALUES (1, 1), (2, 2), (3,3), (4,4);
EXPLAIN SELECT a, SUM(b) FROM t2 GROUP BY a LIMIT 2;
......@@ -1555,8 +1555,8 @@ id select_type table type possible_keys key key_len ref rows Extra
EXPLAIN SELECT 1 FROM t2 WHERE a IN
(SELECT a FROM t1 USE INDEX (i2) IGNORE INDEX (i2));
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 index NULL a 5 NULL 4 Using where; Using index
2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 144 Using where
1 PRIMARY t2 index a a 5 NULL 4 Using index
1 PRIMARY t1 ALL NULL NULL NULL NULL 144 Using where; FirstMatch(t2)
SHOW VARIABLES LIKE 'old';
Variable_name Value
old OFF
......
......@@ -1432,7 +1432,7 @@ group by a1,a2,b;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 range NULL idx_t1_1 147 NULL 17 Using where; Using index for group-by
2 DEPENDENT SUBQUERY t2 index NULL idx_t2_1 163 NULL 164 Using where; Using index
3 DEPENDENT SUBQUERY t3 index NULL idx_t3_1 10 NULL 192 Using where; Using index
2 DEPENDENT SUBQUERY t3 index NULL idx_t3_1 10 NULL 192 Using where; Using index; FirstMatch(t2)
select a1,a2,b,c,min(c), max(c) from t1
where exists ( select * from t2
where t2.c in (select c from t3 where t3.c > t1.b) and
......@@ -1489,7 +1489,7 @@ group by a1,a2,b;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 index NULL idx_t1_1 163 NULL 128 Using where; Using index
2 DEPENDENT SUBQUERY t2 index NULL idx_t2_1 163 NULL 164 Using where; Using index
3 DEPENDENT SUBQUERY t3 index NULL idx_t3_1 10 NULL 192 Using where; Using index
2 DEPENDENT SUBQUERY t3 index NULL idx_t3_1 10 NULL 192 Using where; Using index; FirstMatch(t2)
select a1,a2,b,c,min(c), max(c) from t1
where exists ( select * from t2
where t2.c in (select c from t3 where t3.c > t1.c) and
......
This diff is collapsed.
......@@ -2113,7 +2113,7 @@ CREATE TABLE t3 (a int, b int) ;
INSERT INTO t3 VALUES (5,0),(7,0);
CREATE TABLE t4 (a int);
INSERT INTO t4 VALUES (2),(8);
set @@optimizer_switch='in_to_exists=on,materialization=off,subquery_cache=off';
set @@optimizer_switch='semijoin=off,in_to_exists=on,materialization=off,subquery_cache=off';
SELECT * FROM t2
WHERE t2.b IN (SELECT b FROM t3 WHERE t3.a = t2.a AND a < SOME (SELECT * FROM t4))
OR ( t2.c > 242 );
......
drop table if exists t1,t2,t3,t4;
set @subselect_extra_tmp=@@optimizer_switch;
set optimizer_switch='semijoin=on,firstmatch=on,loosescan=on';
drop view if exists v1,v2,v3;
# From explain.test:
#
# Bug#37870: Usage of uninitialized value caused failed assertion.
......@@ -320,4 +319,157 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 index a a 5 NULL 4 Using index
1 PRIMARY t1 ALL NULL NULL NULL NULL 144 Using where; FirstMatch(t2)
DROP TABLE t1, t2;
set optimizer_switch= @subselect_extra_tmp;
#
# From derived_view.test
#
set @tmp_subselect_extra_derived=@@optimizer_switch;
set optimizer_switch='derived_merge=on,derived_with_keys=on';
#
# LP bug #806504: right join over a view/derived table
#
CREATE TABLE t1 (a int, b int) ;
INSERT INTO t1 VALUES (0,0);
CREATE TABLE t2 (a int) ;
INSERT INTO t2 VALUES (0), (0);
CREATE VIEW v1 AS SELECT * FROM t1;
SELECT * FROM t2 RIGHT JOIN (SELECT * FROM t1) AS t ON t.a != 0
WHERE t.a IN (SELECT b FROM t1);
a a b
NULL 0 0
EXPLAIN EXTENDED
SELECT * FROM t2 RIGHT JOIN (SELECT * FROM t1) AS t ON t.a != 0
WHERE t.a IN (SELECT b FROM t1);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1 100.00
1 PRIMARY t1 system NULL NULL NULL NULL 1 100.00
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00 Using where
Warnings:
Note 1003 select `test`.`t2`.`a` AS `a`,0 AS `a`,0 AS `b` from `test`.`t1` semi join (`test`.`t1`) left join `test`.`t2` on((0 <> 0)) where 1
SELECT * FROM t2 RIGHT JOIN v1 AS t ON t.a != 0
WHERE t.a IN (SELECT b FROM t1);
a a b
NULL 0 0
EXPLAIN EXTENDED
SELECT * FROM t2 RIGHT JOIN v1 AS t ON t.a != 0
WHERE t.a IN (SELECT b FROM t1);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1 100.00
1 PRIMARY t1 system NULL NULL NULL NULL 1 100.00
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00 Using where
Warnings:
Note 1003 select `test`.`t2`.`a` AS `a`,0 AS `a`,0 AS `b` from `test`.`t1` semi join (`test`.`t1`) left join `test`.`t2` on((0 <> 0)) where 1
DROP VIEW v1;
DROP TABLE t1,t2;
#
# LP bug #793448: materialized view accessed by two-component key
#
CREATE TABLE t1 (a int, b int);
INSERT INTO t1 VALUES (9,3), (2,5);
CREATE TABLE t2 (a int, b int);
INSERT INTO t2 VALUES (9,3), (3,7), (9,1), (2,5), (2,4), (3,8);
CREATE TABLE t3 (a int, b int);
INSERT INTO t3 VALUES (10,3), (9,7), (9,1), (2,4);
CREATE VIEW v1(a,b) AS SELECT a, MAX(b) FROM t2 GROUP BY a;
CREATE VIEW v2(a,b) AS SELECT a,b FROM t2 UNION SELECT a,b FROM t3;
SELECT * FROM v1;
a b
2 5
3 8
9 3
SELECT a FROM t1 WHERE (a,b) IN (SELECT * FROM v1);
a
9
2
EXPLAIN
SELECT a FROM t1 WHERE (a,b) IN (SELECT * FROM v1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
1 PRIMARY <derived3> ref key0 key0 10 test.t1.a,test.t1.b 2 FirstMatch(t1)
3 DERIVED t2 ALL NULL NULL NULL NULL 6 Using temporary; Using filesort
SELECT * FROM v2;
a b
9 3
3 7
9 1
2 5
2 4
3 8
10 3
9 7
SELECT a FROM t1 WHERE (a,b) IN (SELECT * FROM v2);
a
9
2
EXPLAIN
SELECT a FROM t1 WHERE (a,b) IN (SELECT * FROM v2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
1 PRIMARY <derived3> ref key0 key0 10 test.t1.a,test.t1.b 2 FirstMatch(t1)
3 DERIVED t2 ALL NULL NULL NULL NULL 6
4 UNION t3 ALL NULL NULL NULL NULL 4
NULL UNION RESULT <union3,4> ALL NULL NULL NULL NULL NULL
DROP VIEW v1,v2;
DROP TABLE t1,t2,t3;
#
# LP bug #874006: materialized view used in IN subquery
#
CREATE TABLE t3 (a int NOT NULL, b varchar(1), c varchar(1));
INSERT INTO t3 VALUES (19,NULL,NULL), (20,'r','r');
CREATE TABLE t1 (a int, b varchar(1) , c varchar(1));
INSERT INTO t1 VALUES (1,NULL,NULL), (5,'r','r'), (7,'y','y');
CREATE TABLE t2 (a int NOT NULL , b int, c varchar(1));
INSERT INTO t2 VALUES (4,3,'r');
CREATE ALGORITHM=TEMPTABLE VIEW v1 AS SELECT * FROM t1;
SET SESSION optimizer_switch='derived_with_keys=off';
EXPLAIN
SELECT * FROM t3
WHERE t3.b IN (SELECT v1.b FROM v1, t2
WHERE t2.c = v1.c AND t2.c = v1.b AND v1.b = t3.c);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 system NULL NULL NULL NULL 1
1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; Start temporary
1 PRIMARY <derived3> ALL NULL NULL NULL NULL 3 Using where; End temporary; Using join buffer (flat, BNL join)
3 DERIVED t1 ALL NULL NULL NULL NULL 3
SELECT * FROM t3
WHERE t3.b IN (SELECT v1.b FROM v1, t2
WHERE t2.c = v1.c AND t2.c = v1.b AND v1.b = t3.c);
a b c
20 r r
SET SESSION optimizer_switch='derived_with_keys=on';
EXPLAIN
SELECT * FROM t3
WHERE t3.b IN (SELECT v1.b FROM v1, t2
WHERE t2.c = v1.c AND t2.c = v1.b AND v1.b = t3.c);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 system NULL NULL NULL NULL 1
1 PRIMARY <derived3> ref key1 key1 10 const,const 0 Start temporary
1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (flat, BNL join)
3 DERIVED t1 ALL NULL NULL NULL NULL 3
SELECT * FROM t3
WHERE t3.b IN (SELECT v1.b FROM v1, t2
WHERE t2.c = v1.c AND t2.c = v1.b AND v1.b = t3.c);
a b c
20 r r
DROP VIEW v1;
DROP TABLE t1,t2,t3;
#
# LP bug #873263: materialized view used in correlated IN subquery
#
CREATE TABLE t1 (a int, b int) ;
INSERT INTO t1 VALUES (5,4), (9,8);
CREATE TABLE t2 (a int, b int) ;
INSERT INTO t2 VALUES (4,5), (5,1);
CREATE ALGORITHM=TEMPTABLE VIEW v2 AS SELECT * FROM t2;
SET SESSION optimizer_switch='derived_with_keys=on';
EXPLAIN
SELECT * FROM t1 WHERE t1.b IN (SELECT v2.a FROM v2 WHERE v2.b = t1.a);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
1 PRIMARY <derived3> ref key0 key0 10 test.t1.b,test.t1.a 2 FirstMatch(t1)
3 DERIVED t2 ALL NULL NULL NULL NULL 2
SELECT * FROM t1 WHERE t1.b IN (SELECT v2.a FROM v2 WHERE v2.b = t1.a);
a b
5 4
DROP VIEW v2;
DROP TABLE t1,t2;
set optimizer_switch= @tmp_subselect_extra_derived;
This diff is collapsed.
drop table if exists x1;
drop table if exists x2;
set @tmp_subselect_nulls=@@optimizer_switch;
set optimizer_switch='semijoin=off';
create table x1(k int primary key, d1 int, d2 int);
create table x2(k int primary key, d1 int, d2 int);
insert into x1 values
......@@ -110,5 +112,6 @@ where x1.d1=x2.d1 and x1.d2=x2.d2);
k d1 d2
10 10 10
20 20 20
set optimizer_switch= @tmp_subselect_nulls;
drop table x1;
drop table x2;
......@@ -514,11 +514,10 @@ explain extended
select * from t1
where id in (select id from t1 as x1 where (t1.cur_date is null));
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1 100.00
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
Warnings:
Note 1276 Field or reference 'test.t1.cur_date' of SELECT #2 was resolved in SELECT #1
Note 1003 select 1 AS `id`,'2007-04-25 18:30:22' AS `cur_date` from `test`.`t1` where <expr_cache><1>(<in_optimizer>(1,<exists>(select `test`.`x1`.`id` from `test`.`t1` `x1` where 0)))
Note 1003 select 1 AS `id`,'2007-04-25 18:30:22' AS `cur_date` from `test`.`t1` semi join (`test`.`t1` `x1`) where (('2007-04-25 18:30:22' = 0))
select * from t1
where id in (select id from t1 as x1 where (t1.cur_date is null));
id cur_date
......@@ -526,11 +525,10 @@ explain extended
select * from t2
where id in (select id from t2 as x1 where (t2.cur_date is null));
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t2 system NULL NULL NULL NULL 1 100.00
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
Warnings:
Note 1276 Field or reference 'test.t2.cur_date' of SELECT #2 was resolved in SELECT #1
Note 1003 select 1 AS `id`,'2007-04-25' AS `cur_date` from `test`.`t2` where <expr_cache><1>(<in_optimizer>(1,<exists>(select `test`.`x1`.`id` from `test`.`t2` `x1` where 0)))
Note 1003 select 1 AS `id`,'2007-04-25' AS `cur_date` from `test`.`t2` semi join (`test`.`t2` `x1`) where (('2007-04-25' = 0))
select * from t2
where id in (select id from t2 as x1 where (t2.cur_date is null));
id cur_date
......@@ -540,11 +538,11 @@ explain extended
select * from t1
where id in (select id from t1 as x1 where (t1.cur_date is null));
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 Using where
2 DEPENDENT SUBQUERY x1 ALL NULL NULL NULL NULL 2 100.00 Using where
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 Using where; Start temporary
1 PRIMARY x1 ALL NULL NULL NULL NULL 2 100.00 Using where; End temporary; Using join buffer (flat, BNL join)
Warnings:
Note 1276 Field or reference 'test.t1.cur_date' of SELECT #2 was resolved in SELECT #1
Note 1003 select `test`.`t1`.`id` AS `id`,`test`.`t1`.`cur_date` AS `cur_date` from `test`.`t1` where <expr_cache><`test`.`t1`.`id`,`test`.`t1`.`cur_date`>(<in_optimizer>(`test`.`t1`.`id`,<exists>(select `test`.`x1`.`id` from `test`.`t1` `x1` where ((`test`.`t1`.`cur_date` = 0) and (<cache>(`test`.`t1`.`id`) = `test`.`x1`.`id`)))))
Note 1003 select `test`.`t1`.`id` AS `id`,`test`.`t1`.`cur_date` AS `cur_date` from `test`.`t1` semi join (`test`.`t1` `x1`) where ((`test`.`x1`.`id` = `test`.`t1`.`id`) and (`test`.`t1`.`cur_date` = 0))
select * from t1
where id in (select id from t1 as x1 where (t1.cur_date is null));
id cur_date
......@@ -552,11 +550,11 @@ explain extended
select * from t2
where id in (select id from t2 as x1 where (t2.cur_date is null));
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00 Using where
2 DEPENDENT SUBQUERY x1 ALL NULL NULL NULL NULL 2 100.00 Using where
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00 Using where; Start temporary
1 PRIMARY x1 ALL NULL NULL NULL NULL 2 100.00 Using where; End temporary; Using join buffer (flat, BNL join)
Warnings:
Note 1276 Field or reference 'test.t2.cur_date' of SELECT #2 was resolved in SELECT #1
Note 1003 select `test`.`t2`.`id` AS `id`,`test`.`t2`.`cur_date` AS `cur_date` from `test`.`t2` where <expr_cache><`test`.`t2`.`id`,`test`.`t2`.`cur_date`>(<in_optimizer>(`test`.`t2`.`id`,<exists>(select `test`.`x1`.`id` from `test`.`t2` `x1` where ((`test`.`t2`.`cur_date` = 0) and (<cache>(`test`.`t2`.`id`) = `test`.`x1`.`id`)))))
Note 1003 select `test`.`t2`.`id` AS `id`,`test`.`t2`.`cur_date` AS `cur_date` from `test`.`t2` semi join (`test`.`t2` `x1`) where ((`test`.`x1`.`id` = `test`.`t2`.`id`) and (`test`.`t2`.`cur_date` = 0))
select * from t2
where id in (select id from t2 as x1 where (t2.cur_date is null));
id cur_date
......
This diff is collapsed.
......@@ -1749,7 +1749,7 @@ INSERT INTO t3 VALUES (5,0),(7,0);
CREATE TABLE t4 (a int);
INSERT INTO t4 VALUES (2),(8);
set @@optimizer_switch='in_to_exists=on,materialization=off,subquery_cache=off';
set @@optimizer_switch='semijoin=off,in_to_exists=on,materialization=off,subquery_cache=off';
SELECT * FROM t2
WHERE t2.b IN (SELECT b FROM t3 WHERE t3.a = t2.a AND a < SOME (SELECT * FROM t4))
......
......@@ -9,11 +9,9 @@
--disable_warnings
drop table if exists t1,t2,t3,t4;
drop view if exists v1,v2,v3;
--enable_warnings
set @subselect_extra_tmp=@@optimizer_switch;
set optimizer_switch='semijoin=on,firstmatch=on,loosescan=on';
--echo # From explain.test:
--echo #
......@@ -273,6 +271,123 @@ EXPLAIN SELECT 1 FROM t2 WHERE a IN
(SELECT a FROM t1 USE INDEX (i2) IGNORE INDEX (i2));
DROP TABLE t1, t2;
--echo #
--echo # From derived_view.test
--echo #
set @tmp_subselect_extra_derived=@@optimizer_switch;
set optimizer_switch='derived_merge=on,derived_with_keys=on';
--echo #
--echo # LP bug #806504: right join over a view/derived table
--echo #
CREATE TABLE t1 (a int, b int) ;
INSERT INTO t1 VALUES (0,0);
CREATE TABLE t2 (a int) ;
INSERT INTO t2 VALUES (0), (0);
CREATE VIEW v1 AS SELECT * FROM t1;
SELECT * FROM t2 RIGHT JOIN (SELECT * FROM t1) AS t ON t.a != 0
WHERE t.a IN (SELECT b FROM t1);
EXPLAIN EXTENDED
SELECT * FROM t2 RIGHT JOIN (SELECT * FROM t1) AS t ON t.a != 0
WHERE t.a IN (SELECT b FROM t1);
SELECT * FROM t2 RIGHT JOIN v1 AS t ON t.a != 0
WHERE t.a IN (SELECT b FROM t1);
EXPLAIN EXTENDED
SELECT * FROM t2 RIGHT JOIN v1 AS t ON t.a != 0
WHERE t.a IN (SELECT b FROM t1);
DROP VIEW v1;
DROP TABLE t1,t2;
--echo #
--echo # LP bug #793448: materialized view accessed by two-component key
--echo #
CREATE TABLE t1 (a int, b int);
INSERT INTO t1 VALUES (9,3), (2,5);
CREATE TABLE t2 (a int, b int);
INSERT INTO t2 VALUES (9,3), (3,7), (9,1), (2,5), (2,4), (3,8);
CREATE TABLE t3 (a int, b int);
INSERT INTO t3 VALUES (10,3), (9,7), (9,1), (2,4);
CREATE VIEW v1(a,b) AS SELECT a, MAX(b) FROM t2 GROUP BY a;
CREATE VIEW v2(a,b) AS SELECT a,b FROM t2 UNION SELECT a,b FROM t3;
SELECT * FROM v1;
SELECT a FROM t1 WHERE (a,b) IN (SELECT * FROM v1);
EXPLAIN
SELECT a FROM t1 WHERE (a,b) IN (SELECT * FROM v1);
SELECT * FROM v2;
SELECT a FROM t1 WHERE (a,b) IN (SELECT * FROM v2);
EXPLAIN
SELECT a FROM t1 WHERE (a,b) IN (SELECT * FROM v2);
DROP VIEW v1,v2;
DROP TABLE t1,t2,t3;
--echo #
--echo # LP bug #874006: materialized view used in IN subquery
--echo #
CREATE TABLE t3 (a int NOT NULL, b varchar(1), c varchar(1));
INSERT INTO t3 VALUES (19,NULL,NULL), (20,'r','r');
CREATE TABLE t1 (a int, b varchar(1) , c varchar(1));
INSERT INTO t1 VALUES (1,NULL,NULL), (5,'r','r'), (7,'y','y');
CREATE TABLE t2 (a int NOT NULL , b int, c varchar(1));
INSERT INTO t2 VALUES (4,3,'r');
CREATE ALGORITHM=TEMPTABLE VIEW v1 AS SELECT * FROM t1;
SET SESSION optimizer_switch='derived_with_keys=off';
EXPLAIN
SELECT * FROM t3
WHERE t3.b IN (SELECT v1.b FROM v1, t2
WHERE t2.c = v1.c AND t2.c = v1.b AND v1.b = t3.c);
SELECT * FROM t3
WHERE t3.b IN (SELECT v1.b FROM v1, t2
WHERE t2.c = v1.c AND t2.c = v1.b AND v1.b = t3.c);
SET SESSION optimizer_switch='derived_with_keys=on';
EXPLAIN
SELECT * FROM t3
WHERE t3.b IN (SELECT v1.b FROM v1, t2
WHERE t2.c = v1.c AND t2.c = v1.b AND v1.b = t3.c);
SELECT * FROM t3
WHERE t3.b IN (SELECT v1.b FROM v1, t2
WHERE t2.c = v1.c AND t2.c = v1.b AND v1.b = t3.c);
DROP VIEW v1;
DROP TABLE t1,t2,t3;
--echo #
--echo # LP bug #873263: materialized view used in correlated IN subquery
--echo #
CREATE TABLE t1 (a int, b int) ;
INSERT INTO t1 VALUES (5,4), (9,8);
CREATE TABLE t2 (a int, b int) ;
INSERT INTO t2 VALUES (4,5), (5,1);
CREATE ALGORITHM=TEMPTABLE VIEW v2 AS SELECT * FROM t2;
SET SESSION optimizer_switch='derived_with_keys=on';
EXPLAIN
SELECT * FROM t1 WHERE t1.b IN (SELECT v2.a FROM v2 WHERE v2.b = t1.a);
SELECT * FROM t1 WHERE t1.b IN (SELECT v2.a FROM v2 WHERE v2.b = t1.a);
DROP VIEW v2;
DROP TABLE t1,t2;
set optimizer_switch= @subselect_extra_tmp;
set optimizer_switch= @tmp_subselect_extra_derived;
set @subselect_extra_no_sj_tmp=@@optimizer_switch;
set optimizer_switch='semijoin=on,firstmatch=on,loosescan=on';
--source t/subselect_extra.test
set optimizer_switch= @subselect_extra_no_sj_tmp;
-- source include/have_innodb.inc
# Note: the tests uses only non-semijoin subqueries so semi-join switch
# settings are not relevant.
set @subselect_innodb_tmp=@@optimizer_switch;
set optimizer_switch='mrr=on,mrr_sort_keys=on,index_condition_pushdown=on';
--disable_warnings
......
......@@ -5,6 +5,9 @@ drop table if exists x1;
drop table if exists x2;
--enable_warnings
set @tmp_subselect_nulls=@@optimizer_switch;
set optimizer_switch='semijoin=off';
create table x1(k int primary key, d1 int, d2 int);
create table x2(k int primary key, d1 int, d2 int);
......@@ -90,5 +93,7 @@ where exists (select *
from x2
where x1.d1=x2.d1 and x1.d2=x2.d2);
set optimizer_switch= @tmp_subselect_nulls;
drop table x1;
drop table x2;
......@@ -609,7 +609,10 @@ enabled by default, add OPTIMIZER_SWITCH_MATERIALIZATION
OPTIMIZER_SWITCH_JOIN_CACHE_INCREMENTAL | \
OPTIMIZER_SWITCH_JOIN_CACHE_HASHED | \
OPTIMIZER_SWITCH_JOIN_CACHE_BKA | \
OPTIMIZER_SWITCH_SUBQUERY_CACHE)
OPTIMIZER_SWITCH_SUBQUERY_CACHE |\
OPTIMIZER_SWITCH_SEMIJOIN | \
OPTIMIZER_SWITCH_FIRSTMATCH | \
OPTIMIZER_SWITCH_LOOSE_SCAN )
/*
Replication uses 8 bytes to store SQL_MODE in the binary log. The day you
......
......@@ -484,11 +484,11 @@ static const char *optimizer_switch_str="index_merge=on,index_merge_union=on,"
"index_condition_pushdown=off,"
"derived_merge=off,"
"derived_with_keys=off,"
"firstmatch=off,"
"loosescan=off,"
"firstmatch=on,"
"loosescan=on,"
"materialization=off,"
"in_to_exists=on,"
"semijoin=off,"
"semijoin=on,"
"partial_match_rowid_merge=on,"
"partial_match_table_scan=on,"
"subquery_cache=on,"
......
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