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This commit is contained in:
Sergey Petrunya 2012-03-26 21:38:24 +04:00
commit ff731f39ca
5 changed files with 183 additions and 5 deletions
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44
mysql-test/t/subselect_sj2.test
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@ -1174,5 +1174,49 @@ SELECT * FROM t2
DROP VIEW v1;
DROP TABLE t1, t2;
--echo #
--echo # BUG#951283: Wrong result (missing rows) with semijoin+firstmatch, IN/ANY subquery
--echo #
set @tmp_951283=@@optimizer_prune_level;
SET optimizer_prune_level=0;
CREATE TABLE t1 ( a INT ) ENGINE=InnoDB;
INSERT INTO t1 VALUES
(10),(11),(12),(13),(14),(15),(16),
(17),(18),(19),(20),(21),(22),(23);
CREATE TABLE t2 (
b INT PRIMARY KEY,
c VARCHAR(1),
d VARCHAR(1),
KEY(c)
) ENGINE=InnoDB;
INSERT INTO t2 VALUES
(1,'j','j'),(2,'v','v'),(3,'c','c'),(4,'m','m'),
(5,'d','d'),(6,'d','d'),(7,'y','y'),(8,'t','t'),
(9,'d','d'),(10,'s','s'),(11,'r','r'),(12,'m','m'),
(13,'b','b'),(14,'x','x'),(15,'g','g'),(16,'p','p'),
(17,'q','q'),(18,'w','w'),(19,'d','d');
EXPLAIN
SELECT COUNT(*) FROM t1 AS alias1, t1 AS alias2, t2 AS alias3
WHERE alias3.d IN (
SELECT alias4.c FROM t2 AS alias4, t2 AS alias5
WHERE alias5.b = alias4.b
AND ( alias5.b >= alias3.b OR alias5.c != alias3.c )
);
SELECT COUNT(*) FROM t1 AS alias1, t1 AS alias2, t2 AS alias3
WHERE alias3.d IN (
SELECT alias4.c FROM t2 AS alias4, t2 AS alias5
WHERE alias5.b = alias4.b
AND ( alias5.b >= alias3.b OR alias5.c != alias3.c )
);
set optimizer_prune_level=@tmp_951283;
DROP TABLE t1,t2;
--echo # This must be the last in the file:
set optimizer_switch=@subselect_sj2_tmp;