mirror of
https://github.com/MariaDB/server.git
synced 2025-01-16 20:12:31 +01:00
545 lines
14 KiB
Text
545 lines
14 KiB
Text
#
|
|
# Test cases for bugs related to the implementation of
|
|
# MWL#89 cost-based choice between the materialization and in-to-exists
|
|
#
|
|
--source include/default_optimizer_switch.inc
|
|
|
|
--echo #
|
|
--echo # LP BUG#643424 valgrind warning in choose_subquery_plan()
|
|
--echo #
|
|
|
|
CREATE TABLE t1 (
|
|
pk int(11) NOT NULL AUTO_INCREMENT,
|
|
c1 int(11) DEFAULT NULL,
|
|
c2 int(11) DEFAULT NULL,
|
|
PRIMARY KEY (pk),
|
|
KEY c2 (c2));
|
|
|
|
INSERT INTO t1 VALUES (1,NULL,2);
|
|
INSERT INTO t1 VALUES (2,7,9);
|
|
INSERT INTO t1 VALUES (9,NULL,8);
|
|
|
|
CREATE TABLE t2 (
|
|
pk int(11) NOT NULL AUTO_INCREMENT,
|
|
c1 int(11) DEFAULT NULL,
|
|
c2 int(11) DEFAULT NULL,
|
|
PRIMARY KEY (pk),
|
|
KEY c2 (c2));
|
|
|
|
INSERT INTO t2 VALUES (1,1,7);
|
|
|
|
set @save_optimizer_switch=@@optimizer_switch;
|
|
set @@optimizer_switch='materialization=on,in_to_exists=on,semijoin=off';
|
|
|
|
SELECT pk FROM t1 WHERE (c2, c1) IN (SELECT c2, c2 FROM t2);
|
|
|
|
set session optimizer_switch=@save_optimizer_switch;
|
|
|
|
drop table t1, t2;
|
|
|
|
|
|
--echo #
|
|
--echo # LP BUG#652727 Crash in create_ref_for_key()
|
|
--echo #
|
|
|
|
CREATE TABLE t2 (
|
|
pk int(11) NOT NULL AUTO_INCREMENT,
|
|
c1 int(11) DEFAULT NULL,
|
|
PRIMARY KEY (pk));
|
|
|
|
INSERT INTO t2 VALUES (10,7);
|
|
INSERT INTO t2 VALUES (11,1);
|
|
INSERT INTO t2 VALUES (17,NULL);
|
|
|
|
CREATE TABLE t1 (
|
|
pk int(11) NOT NULL AUTO_INCREMENT,
|
|
c1 int(11) DEFAULT NULL,
|
|
PRIMARY KEY (pk));
|
|
|
|
INSERT INTO t1 VALUES (15,1);
|
|
INSERT INTO t1 VALUES (19,NULL);
|
|
|
|
CREATE TABLE t3 (c2 int(11) DEFAULT NULL, KEY c2 (c2));
|
|
INSERT INTO t3 VALUES (1);
|
|
|
|
set @save_optimizer_switch=@@optimizer_switch;
|
|
set @@optimizer_switch='materialization=on,in_to_exists=on,semijoin=off';
|
|
|
|
SELECT c2
|
|
FROM t3
|
|
WHERE (2, 6) IN (SELECT t1.c1, t1.c1 FROM t1 STRAIGHT_JOIN t2 ON t2.pk = t1.pk);
|
|
|
|
set session optimizer_switch=@save_optimizer_switch;
|
|
drop table t1, t2, t3;
|
|
|
|
|
|
--echo #
|
|
--echo # LP BUG#641245 Crash in Item_equal::contains
|
|
--echo #
|
|
|
|
CREATE TABLE t1 (
|
|
pk int(11) NOT NULL AUTO_INCREMENT,
|
|
c1 int(11) DEFAULT NULL,
|
|
c2 int(11) DEFAULT NULL,
|
|
c3 varchar(1) DEFAULT NULL,
|
|
c4 varchar(1) DEFAULT NULL,
|
|
PRIMARY KEY (pk),
|
|
KEY c2 (c2),
|
|
KEY c3 (c3,c2));
|
|
|
|
INSERT INTO t1 VALUES (10,7,8,'v','v');
|
|
INSERT INTO t1 VALUES (11,1,9,'r','r');
|
|
INSERT INTO t1 VALUES (12,5,9,'a','a');
|
|
INSERT INTO t1 VALUES (13,7,18,'v','v');
|
|
INSERT INTO t1 VALUES (14,1,19,'r','r');
|
|
INSERT INTO t1 VALUES (15,5,29,'a','a');
|
|
INSERT INTO t1 VALUES (17,7,38,'v','v');
|
|
INSERT INTO t1 VALUES (18,1,39,'r','r');
|
|
INSERT INTO t1 VALUES (19,5,49,'a','a');
|
|
|
|
create table t1a like t1;
|
|
insert into t1a select * from t1;
|
|
|
|
create table t1b like t1;
|
|
insert into t1b select * from t1;
|
|
|
|
CREATE TABLE t2 (
|
|
pk int(11) NOT NULL AUTO_INCREMENT,
|
|
c1 int(11) DEFAULT NULL,
|
|
c2 int(11) DEFAULT NULL,
|
|
c3 varchar(1) DEFAULT NULL,
|
|
c4 varchar(1) DEFAULT NULL,
|
|
PRIMARY KEY (pk),
|
|
KEY c2 (c2),
|
|
KEY c3 (c3,c2));
|
|
|
|
INSERT INTO t2 VALUES (1,NULL,2,'w','w');
|
|
INSERT INTO t2 VALUES (2,7,9,'m','m');
|
|
|
|
set @@optimizer_switch='materialization=off,in_to_exists=on,semijoin=off';
|
|
|
|
let $query=
|
|
SELECT pk
|
|
FROM t1
|
|
WHERE c1 IN
|
|
(SELECT t1a.c1
|
|
FROM (t1b JOIN t2 ON t2.c3 = t1b.c4) LEFT JOIN
|
|
t1a ON (t1a.c2 = t1b.pk AND 2)
|
|
WHERE t1.pk) ;
|
|
eval EXPLAIN EXTENDED $query;
|
|
eval $query;
|
|
|
|
DROP TABLE t1, t1a, t1b, t2;
|
|
|
|
--echo #
|
|
--echo # LP BUG#714808 Assertion `outer_lookup_keys <= outer_record_count'
|
|
--echo # failed with materialization
|
|
|
|
CREATE TABLE t1 ( pk int(11), PRIMARY KEY (pk)) ;
|
|
CREATE TABLE t2 ( f2 int(11)) ;
|
|
CREATE TABLE t3 ( f1 int(11), f3 varchar(1), KEY (f1)) ;
|
|
INSERT INTO t3 VALUES (7,'f');
|
|
|
|
set @@optimizer_switch='materialization=on,in_to_exists=on,semijoin=off';
|
|
|
|
EXPLAIN
|
|
SELECT t1.*
|
|
FROM t3 RIGHT JOIN t1 ON t1.pk = t3.f1
|
|
WHERE t3.f3 OR ( 3 ) IN ( SELECT f2 FROM t2 );
|
|
|
|
SELECT t1.*
|
|
FROM t3 RIGHT JOIN t1 ON t1.pk = t3.f1
|
|
WHERE t3.f3 OR ( 3 ) IN ( SELECT f2 FROM t2 );
|
|
|
|
drop table t1,t2,t3;
|
|
|
|
--echo #
|
|
--echo # LP BUG#714999 Second crash in select_describe() with nested subqueries
|
|
--echo #
|
|
|
|
CREATE TABLE t1 ( pk int(11)) ;
|
|
INSERT INTO t1 VALUES (29);
|
|
|
|
CREATE TABLE t2 ( f1 varchar(1)) ;
|
|
INSERT INTO t2 VALUES ('f'),('d');
|
|
|
|
CREATE TABLE t3 ( f2 varchar(1)) ;
|
|
|
|
EXPLAIN SELECT f2 FROM t3 WHERE (
|
|
SELECT MAX( pk ) FROM t1
|
|
WHERE EXISTS (
|
|
SELECT max(f1)
|
|
FROM t2 GROUP BY f1
|
|
)
|
|
) IS NULL ;
|
|
|
|
drop table t1, t2, t3;
|
|
|
|
--echo #
|
|
--echo # LP BUG#715034 Item_sum_distinct::clear(): Assertion `tree != 0' failed
|
|
--echo #
|
|
|
|
CREATE TABLE t2 ( f2 int(11)) ;
|
|
|
|
CREATE TABLE t1 ( f3 int(11), KEY (f3)) ;
|
|
INSERT INTO t1 VALUES (6),(4);
|
|
|
|
set @tmp_optimizer_switch=@@optimizer_switch;
|
|
set optimizer_switch='derived_merge=off,derived_with_keys=off';
|
|
|
|
EXPLAIN
|
|
SELECT * FROM (SELECT * FROM t2) AS a2
|
|
WHERE (SELECT distinct SUM(distinct f3 ) FROM t1);
|
|
|
|
insert into t2 values (1),(2);
|
|
EXPLAIN
|
|
SELECT * FROM (SELECT * FROM t2) AS a2
|
|
WHERE (SELECT distinct SUM(distinct f3 ) FROM t1);
|
|
|
|
set optimizer_switch=@tmp_optimizer_switch;
|
|
drop table t1,t2;
|
|
|
|
--echo #
|
|
--echo # LP BUG#715027 Assertion `!table || (!table->read_set || bitmap_is_set(table->read_set, field_index))' failed
|
|
--echo #
|
|
|
|
CREATE TABLE t1 ( f1 int(11), PRIMARY KEY (f1)) ;
|
|
INSERT INTO t1 VALUES (28),(29);
|
|
|
|
CREATE TABLE t2 ( f2 int(11), f3 int(11), f10 varchar(1)) ;
|
|
INSERT INTO t2 VALUES (NULL,6,'f'),(4,2,'d');
|
|
|
|
set @tmp_optimizer_switch=@@optimizer_switch;
|
|
set optimizer_switch='derived_merge=off,derived_with_keys=off';
|
|
|
|
EXPLAIN
|
|
SELECT alias2.f2 AS field1
|
|
FROM t1 AS alias1 JOIN ( SELECT * FROM t2 ) AS alias2 ON alias2.f3 = alias1.f1
|
|
WHERE (
|
|
SELECT t2.f2
|
|
FROM t2 JOIN t1 ON t1.f1
|
|
WHERE t1.f1 AND alias2.f10
|
|
)
|
|
ORDER BY field1 ;
|
|
|
|
SELECT alias2.f2 AS field1
|
|
FROM t1 AS alias1 JOIN ( SELECT * FROM t2 ) AS alias2 ON alias2.f3 = alias1.f1
|
|
WHERE (
|
|
SELECT t2.f2
|
|
FROM t2 JOIN t1 ON t1.f1
|
|
WHERE t1.f1 AND alias2.f10
|
|
)
|
|
ORDER BY field1 ;
|
|
|
|
set optimizer_switch=@tmp_optimizer_switch;
|
|
drop table t1,t2;
|
|
|
|
--echo #
|
|
--echo # LP BUG#718578 Yet another Assertion `!table ||
|
|
--echo # (!table->read_set || bitmap_is_set(table->read_set, field_index))'
|
|
|
|
CREATE TABLE t1 ( f1 int(11), f2 int(11), f3 int(11)) ;
|
|
INSERT IGNORE INTO t1 VALUES (28,5,6),(29,NULL,4);
|
|
|
|
CREATE TABLE t2 ( f10 varchar(1) );
|
|
INSERT IGNORE INTO t2 VALUES (NULL);
|
|
|
|
SELECT f1 AS field1
|
|
FROM ( SELECT * FROM t1 ) AS alias1
|
|
WHERE (SELECT t1.f1
|
|
FROM t2 JOIN t1 ON t1.f2
|
|
WHERE alias1.f3 AND t1.f3) AND f2
|
|
ORDER BY field1;
|
|
|
|
drop table t1,t2;
|
|
|
|
--echo #
|
|
--echo # LP BUG#601124 Bug in eliminate_item_equal
|
|
--echo # leads to crash in Item_func::Item_func
|
|
|
|
CREATE TABLE t1 ( f1 int(11), f3 varchar(1)) ;
|
|
INSERT INTO t1 VALUES (5,'m'),(NULL,'c');
|
|
|
|
CREATE TABLE t2 ( f2 int(11), f3 varchar(1)) ;
|
|
INSERT INTO t2 VALUES (6,'f'),(2,'d');
|
|
|
|
CREATE TABLE t3 ( f2 int(11), f3 varchar(1)) ;
|
|
INSERT INTO t3 VALUES (6,'f'),(2,'d');
|
|
|
|
SELECT * FROM t3
|
|
WHERE ( f2 ) IN (SELECT t1.f1
|
|
FROM t1 STRAIGHT_JOIN t2 ON t2.f3 = t1.f3
|
|
WHERE t2.f3 = 'c');
|
|
drop table t1,t2,t3;
|
|
|
|
|
|
--echo #
|
|
--echo # LP BUG#718593 Crash in substitute_for_best_equal_field -> eliminate_item_equal ->
|
|
--echo # Item_field::find_item_equal -> Item_equal::contains
|
|
--echo #
|
|
|
|
set @save_optimizer_switch=@@optimizer_switch;
|
|
SET @@optimizer_switch = 'semijoin=off';
|
|
|
|
CREATE TABLE t1 ( f3 int(11), f10 varchar(1), f11 varchar(1)) ;
|
|
INSERT IGNORE INTO t1 VALUES (6,'f','f'),(2,'d','d');
|
|
|
|
CREATE TABLE t2 ( f12 int(11), f13 int(11)) ;
|
|
insert into t2 values (1,2), (3,4);
|
|
|
|
EXPLAIN
|
|
SELECT * FROM t2
|
|
WHERE ( f12 ) IN (
|
|
SELECT alias2.f3
|
|
FROM t1 AS alias1 JOIN t1 AS alias2 ON alias2.f10 = alias1.f11
|
|
WHERE alias1.f11 OR alias1.f3 = 50 AND alias1.f10
|
|
);
|
|
SELECT * FROM t2
|
|
WHERE ( f12 ) IN (
|
|
SELECT alias2.f3
|
|
FROM t1 AS alias1 JOIN t1 AS alias2 ON alias2.f10 = alias1.f11
|
|
WHERE alias1.f11 OR alias1.f3 = 50 AND alias1.f10
|
|
);
|
|
|
|
EXPLAIN
|
|
SELECT * FROM t2
|
|
WHERE ( f12 ) IN (
|
|
SELECT alias2.f3
|
|
FROM t1 AS alias1, t1 AS alias2
|
|
WHERE (alias2.f10 = alias1.f11) AND (alias1.f11 OR alias1.f3 = 50 AND alias1.f10));
|
|
SELECT * FROM t2
|
|
WHERE ( f12 ) IN (
|
|
SELECT alias2.f3
|
|
FROM t1 AS alias1, t1 AS alias2
|
|
WHERE (alias2.f10 = alias1.f11) AND (alias1.f11 OR alias1.f3 = 50 AND alias1.f10));
|
|
|
|
set @@optimizer_switch=@save_optimizer_switch;
|
|
drop table t1, t2;
|
|
|
|
|
|
--echo #
|
|
--echo # MWL#89: test introduced after Sergey Petrunia's review - test that
|
|
--echo # keyparts wihtout index prefix are used with the IN-EXISTS strategy.
|
|
--echo #
|
|
|
|
create table t1 (c1 int);
|
|
insert into t1 values (1), (2), (3);
|
|
|
|
create table t2 (kp1 int, kp2 int, c2 int, filler char(100));
|
|
insert into t2 values (0,0,0,'filler'),(0,1,1,'filler'),(0,2,2,'filler'),(0,3,3,'filler');
|
|
|
|
create index key1 on t2 (kp1, kp2);
|
|
create index key2 on t2 (kp1);
|
|
create index key3 on t2 (kp2);
|
|
|
|
SET @@optimizer_switch='materialization=off,semijoin=off,in_to_exists=on';
|
|
|
|
analyze table t2;
|
|
|
|
explain
|
|
select c1 from t1 where c1 in (select kp1 from t2 where kp2 = 10 and c2 = 4) or c1 > 7;
|
|
select c1 from t1 where c1 in (select kp1 from t2 where kp2 = 10 and c2 = 4) or c1 > 7;
|
|
|
|
set @@optimizer_switch='default';
|
|
|
|
drop table t1, t2;
|
|
|
|
--echo #
|
|
--echo # LP BUG#800679: Assertion `outer_join->table_count > 0' failed in
|
|
--echo # JOIN::choose_subquery_plan() with materialization=on,semijoin=off
|
|
--echo #
|
|
|
|
CREATE TABLE t1 ( f1 int);
|
|
insert into t1 values (1),(2);
|
|
CREATE TABLE t2 ( f1 int);
|
|
insert into t2 values (1),(2);
|
|
|
|
SET @@optimizer_switch='materialization=on,semijoin=off';
|
|
|
|
EXPLAIN
|
|
SELECT * FROM t1
|
|
WHERE (f1) IN (SELECT f1 FROM t2)
|
|
LIMIT 0;
|
|
|
|
SELECT * FROM t1
|
|
WHERE (f1) IN (SELECT f1 FROM t2)
|
|
LIMIT 0;
|
|
|
|
set @@optimizer_switch='default';
|
|
drop table t1, t2;
|
|
|
|
--echo #
|
|
--echo # LP BUG#834492: Crash in fix_semijoin_strategies_for_picked_join_order
|
|
--echo # with nested subqueries and LooseScan=ON
|
|
--echo #
|
|
|
|
CREATE TABLE t3 (b int) ;
|
|
INSERT INTO t3 VALUES (0),(0);
|
|
|
|
CREATE TABLE t4 (a int, b int, c int, d int, PRIMARY KEY (a)) ;
|
|
INSERT INTO t4 VALUES (28,0,0,0),(29,3,0,0);
|
|
|
|
CREATE TABLE t5 (a int, b int, c int, d int, KEY (c,b)) ;
|
|
INSERT INTO t5 VALUES (28,0,0,0),(29,3,0,0);
|
|
|
|
SET @@optimizer_switch='semijoin=ON,loosescan=ON,firstmatch=OFF,materialization=OFF';
|
|
|
|
EXPLAIN SELECT *
|
|
FROM t3
|
|
WHERE t3.b > ALL (
|
|
SELECT c
|
|
FROM t4
|
|
WHERE t4.a >= t3.b
|
|
AND a = SOME (SELECT b FROM t5));
|
|
|
|
SELECT *
|
|
FROM t3
|
|
WHERE t3.b > ALL (
|
|
SELECT c
|
|
FROM t4
|
|
WHERE t4.a >= t3.b
|
|
AND a = SOME (SELECT b FROM t5));
|
|
|
|
set @@optimizer_switch='default';
|
|
drop table t3, t4, t5;
|
|
|
|
--echo #
|
|
--echo # LP BUG#858038 The result of a query with NOT IN subquery depends on the state of the optimizer switch
|
|
--echo #
|
|
|
|
set @optimizer_switch_save= @@optimizer_switch;
|
|
|
|
create table t1 (c1 char(2) not null, c2 char(2));
|
|
create table t2 (c3 char(2), c4 char(2));
|
|
|
|
insert into t1 values ('a1', 'b1');
|
|
insert into t1 values ('a2', 'b2');
|
|
|
|
insert into t2 values ('x1', 'y1');
|
|
insert into t2 values ('a2', null);
|
|
|
|
set @@optimizer_switch='in_to_exists=off,materialization=on,partial_match_rowid_merge=off,partial_match_table_scan=on';
|
|
explain select * from t1 where c1 = 'a2' and (c1, c2) not in (select * from t2);
|
|
select * from t1 where c1 = 'a2' and (c1, c2) not in (select * from t2);
|
|
|
|
set @@optimizer_switch='in_to_exists=off,materialization=on,partial_match_rowid_merge=on,partial_match_table_scan=off';
|
|
explain select * from t1 where c1 = 'a2' and (c1, c2) not in (select * from t2);
|
|
select * from t1 where c1 = 'a2' and (c1, c2) not in (select * from t2);
|
|
|
|
drop table t1, t2;
|
|
|
|
set optimizer_switch= @optimizer_switch_save;
|
|
|
|
--echo #
|
|
--echo # MDEV-12673: cost-based choice between materialization and in-to-exists
|
|
--echo #
|
|
|
|
CREATE TABLE t1 (
|
|
pk1 int, a1 varchar(3), b1 varchar(3), PRIMARY KEY (pk1), KEY(a1), KEY(b1)
|
|
) ENGINE=MyISAM;
|
|
INSERT INTO t1 VALUES (1,'foo','bar'),(2,'bar','foo');
|
|
|
|
CREATE TABLE t2 (pk2 INT PRIMARY KEY, a2 VARCHAR(3), KEY(a2)) ENGINE=MyISAM;
|
|
INSERT INTO t2 VALUES (1,'abc'),(2,'xyz'),(3,'foo');
|
|
|
|
SELECT 'qux' IN ( SELECT a1 FROM t1 INNER JOIN t2 WHERE a2 = b1 AND pk2 = 3 );
|
|
SELECT 'bar' IN ( SELECT a1 FROM t1 INNER JOIN t2 WHERE a2 = b1 AND pk2 = 3 );
|
|
EXPLAIN
|
|
SELECT 'bar' IN ( SELECT a1 FROM t1 INNER JOIN t2 WHERE a2 = b1 AND pk2 = 3 );
|
|
|
|
DROP TABLE t1,t2;
|
|
|
|
CREATE TABLE t1 (i1 INT) ENGINE=MyISAM;
|
|
INSERT INTO t1 VALUES (1);
|
|
|
|
CREATE TABLE t2 (i2 int, c2 varchar(3), KEY(i2,c2)) ENGINE=MyISAM;
|
|
INSERT INTO t2 VALUES (1,'abc'),(2,'foo');
|
|
|
|
CREATE TABLE t3 (pk3 int PRIMARY KEY, c3 varchar(3)) ENGINE=MyISAM;
|
|
INSERT INTO t3 VALUES (1,'foo'),(2,'bar');
|
|
|
|
SELECT * FROM t1 WHERE i1 NOT IN (
|
|
SELECT i2 FROM t2 RIGHT JOIN t3 ON (c3 = c2) WHERE pk3 = i1
|
|
);
|
|
|
|
EXPLAIN
|
|
SELECT * FROM t1 WHERE i1 NOT IN (
|
|
SELECT i2 FROM t2 RIGHT JOIN t3 ON (c3 = c2) WHERE pk3 = i1
|
|
);
|
|
|
|
DROP TABLE t1,t2,t3;
|
|
|
|
--echo #
|
|
--echo # MDEV-7599: in-to-exists chosen after min/max optimization
|
|
--echo #
|
|
|
|
set @optimizer_switch_save= @@optimizer_switch;
|
|
|
|
CREATE TABLE t1 (a INT, KEY(a)) ENGINE=MyISAM;
|
|
INSERT INTO t1 VALUES (1),(2);
|
|
|
|
CREATE TABLE t2 (b INT, c INT) ENGINE=MyISAM;
|
|
INSERT INTO t2 VALUES (1,6),(2,4), (8,9);
|
|
|
|
let $q=
|
|
SELECT * FROM t2 WHERE b != ALL (SELECT MIN(a) FROM t1, t2 WHERE t2.c = t2.b);
|
|
|
|
eval $q;
|
|
eval EXPLAIN EXTENDED $q;
|
|
set optimizer_switch= 'materialization=off';
|
|
eval $q;
|
|
eval EXPLAIN EXTENDED $q;
|
|
set optimizer_switch= @optimizer_switch_save;
|
|
|
|
DROP TABLE t1,t2;
|
|
|
|
CREATE TABLE t1 (f1 varchar(10)) ENGINE=MyISAM;
|
|
INSERT INTO t1 VALUES ('foo'),('bar');
|
|
|
|
CREATE TABLE t2 (f2 varchar(10), key(f2)) ENGINE=MyISAM;
|
|
INSERT INTO t2 VALUES ('baz'),('qux');
|
|
|
|
CREATE TABLE t3 (f3 varchar(10)) ENGINE=MyISAM;
|
|
INSERT INTO t3 VALUES ('abc'),('def');
|
|
|
|
SELECT * FROM t1
|
|
WHERE f1 = ALL( SELECT MAX(t2a.f2)
|
|
FROM t2 AS t2a INNER JOIN t2 t2b INNER JOIN t3
|
|
ON (f3 = t2b.f2) );
|
|
|
|
DROP TABLE t1,t2,t3;
|
|
|
|
--echo #
|
|
--echo # MDEV-12963: min/max optimization optimizing away all tables employed
|
|
--echo # for uncorrelated IN subquery used in a disjunct of WHERE
|
|
--echo #
|
|
|
|
create table t1 (a int, index idx(a)) engine=myisam;
|
|
insert into t1 values (4),(7),(1),(3),(9);
|
|
|
|
select * from t1 where a in (select max(a) from t1 where a < 4) or a > 5;
|
|
explain
|
|
select * from t1 where a in (select max(a) from t1 where a < 4) or a > 5;
|
|
|
|
drop table t1;
|
|
|
|
--echo #
|
|
--echo # MDEV-13135: subquery with ON expression subject to
|
|
--echo # semi-join optimizations
|
|
--echo #
|
|
|
|
CREATE TABLE t1 (a INT);
|
|
CREATE ALGORITHM=MERGE VIEW v1 AS SELECT a AS v_a FROM t1;
|
|
INSERT INTO t1 VALUES (1),(3);
|
|
|
|
CREATE TABLE t2 (b INT, KEY(b));
|
|
INSERT INTO t2 VALUES (3),(4);
|
|
|
|
SELECT * FROM t1 WHERE a NOT IN (
|
|
SELECT b FROM t2 INNER JOIN v1 ON (b IN ( SELECT a FROM t1 ))
|
|
WHERE v_a = b
|
|
);
|
|
|
|
DROP VIEW v1;
|
|
DROP TABLE t1,t2;
|
|
|