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- Merged the fix for bug lp:1009187, mdev-373.

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- Performed some refactoring and simplification that was enabled and required by the merge.
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2012-09-17 11:13:46 +03:00
parent 83bdf56ebd b917fb63a6
commit 0bc89929ef
4 changed files with 244 additions and 212 deletions
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84
mysql-test/r/subselect4.result
View File

@ -205,6 +205,90 @@ default(a)
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
DROP TABLE t;
#
# LP BUG#1009187, MDEV-373, MYSQL bug#58628
# Wrong result for a query with [NOT] IN subquery predicate if
# the left part of the predicate is explicit NULL
#
CREATE TABLE t1 (pk INT NOT NULL, i INT NOT NULL);
INSERT INTO t1 VALUES (0,10), (1,20), (2,30), (3,40);
CREATE TABLE t2a (pk INT NOT NULL, i INT NOT NULL, PRIMARY KEY(i,pk));
INSERT INTO t2a VALUES (0,0), (1,1), (2,2), (3,3);
CREATE TABLE t2b (pk INT, i INT);
INSERT INTO t2b VALUES (0,0), (1,1), (2,2), (3,3);
CREATE TABLE t2c (pk INT NOT NULL, i INT NOT NULL);
INSERT INTO t2c VALUES (0,0), (1,1), (2,2), (3,3);
create index it2c on t2c (i,pk);
EXPLAIN
SELECT * FROM t1 WHERE NULL NOT IN (SELECT t2a.i FROM t2a WHERE t2a.pk = t1.pk);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Using where
2 DEPENDENT SUBQUERY t2a unique_subquery PRIMARY PRIMARY 8 const,test.t1.pk 1 Using index; Using where; Full scan on NULL key
SELECT * FROM t1 WHERE NULL NOT IN (SELECT t2a.i FROM t2a WHERE t2a.pk = t1.pk);
pk i
SELECT * FROM t1 WHERE 1+NULL NOT IN (SELECT t2a.i FROM t2a WHERE t2a.pk = t1.pk);
pk i
SELECT * FROM t1 WHERE NULL IN (SELECT t2a.i FROM t2a WHERE t2a.pk = t1.pk) IS UNKNOWN;
pk i
0 10
1 20
2 30
3 40
SELECT t1.pk, NULL NOT IN (SELECT t2a.i FROM t2a WHERE t2a.pk = t1.pk) FROM t1;
pk NULL NOT IN (SELECT t2a.i FROM t2a WHERE t2a.pk = t1.pk)
0 NULL
1 NULL
2 NULL
3 NULL
EXPLAIN
SELECT * FROM t1 WHERE NULL NOT IN (SELECT t2b.i FROM t2b WHERE t2b.pk = t1.pk);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Using where
2 DEPENDENT SUBQUERY t2b ALL NULL NULL NULL NULL 4 Using where
SELECT * FROM t1 WHERE NULL NOT IN (SELECT t2b.i FROM t2b WHERE t2b.pk = t1.pk);
pk i
SELECT * FROM t1 WHERE NULL IN (SELECT t2b.i FROM t2b WHERE t2b.pk = t1.pk) IS UNKNOWN;
pk i
0 10
1 20
2 30
3 40
SELECT t1.pk, NULL NOT IN (SELECT t2b.i FROM t2b WHERE t2b.pk = t1.pk) FROM t1;
pk NULL NOT IN (SELECT t2b.i FROM t2b WHERE t2b.pk = t1.pk)
0 NULL
1 NULL
2 NULL
3 NULL
EXPLAIN
SELECT * FROM t1 WHERE NULL NOT IN (SELECT t2c.i FROM t2c WHERE t2c.pk = t1.pk);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Using where
2 DEPENDENT SUBQUERY t2c index_subquery it2c it2c 8 const,test.t1.pk 2 Using index; Using where; Full scan on NULL key
SELECT * FROM t1 WHERE NULL NOT IN (SELECT t2c.i FROM t2c WHERE t2c.pk = t1.pk);
pk i
SELECT * FROM t1 WHERE NULL IN (SELECT t2c.i FROM t2c WHERE t2c.pk = t1.pk) IS UNKNOWN;
pk i
0 10
1 20
2 30
3 40
SELECT t1.pk, NULL NOT IN (SELECT t2c.i FROM t2c WHERE t2c.pk = t1.pk) FROM t1;
pk NULL NOT IN (SELECT t2c.i FROM t2c WHERE t2c.pk = t1.pk)
0 NULL
1 NULL
2 NULL
3 NULL
EXPLAIN
SELECT * FROM t1 WHERE (NULL, 1) NOT IN (SELECT t2a.i, t2a.pk FROM t2a WHERE t2a.pk = t1.pk);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Using where
2 DEPENDENT SUBQUERY t2a eq_ref PRIMARY PRIMARY 8 const,test.t1.pk 1 Using where; Using index; Full scan on NULL key
SELECT * FROM t1 WHERE (NULL, 1) NOT IN (SELECT t2a.i, t2a.pk FROM t2a WHERE t2a.pk = t1.pk);
pk i
0 10
2 30
3 40
drop table t1, t2a, t2b, t2c;
#
# End of 5.1 tests.
#
#

44
mysql-test/t/subselect4.test
View File

@ -183,6 +183,50 @@ INSERT INTO t VALUES (''),(''),(''),(''),(''),(''),(''),(''),(''),(''),('');
SELECT * FROM (SELECT default(a) FROM t GROUP BY a) d;
DROP TABLE t;
--echo #
--echo # LP BUG#1009187, MDEV-373, MYSQL bug#58628
--echo # Wrong result for a query with [NOT] IN subquery predicate if
--echo # the left part of the predicate is explicit NULL
--echo #
CREATE TABLE t1 (pk INT NOT NULL, i INT NOT NULL);
INSERT INTO t1 VALUES (0,10), (1,20), (2,30), (3,40);
CREATE TABLE t2a (pk INT NOT NULL, i INT NOT NULL, PRIMARY KEY(i,pk));
INSERT INTO t2a VALUES (0,0), (1,1), (2,2), (3,3);
CREATE TABLE t2b (pk INT, i INT);
INSERT INTO t2b VALUES (0,0), (1,1), (2,2), (3,3);
CREATE TABLE t2c (pk INT NOT NULL, i INT NOT NULL);
INSERT INTO t2c VALUES (0,0), (1,1), (2,2), (3,3);
create index it2c on t2c (i,pk);
EXPLAIN
SELECT * FROM t1 WHERE NULL NOT IN (SELECT t2a.i FROM t2a WHERE t2a.pk = t1.pk);
SELECT * FROM t1 WHERE NULL NOT IN (SELECT t2a.i FROM t2a WHERE t2a.pk = t1.pk);
SELECT * FROM t1 WHERE 1+NULL NOT IN (SELECT t2a.i FROM t2a WHERE t2a.pk = t1.pk);
SELECT * FROM t1 WHERE NULL IN (SELECT t2a.i FROM t2a WHERE t2a.pk = t1.pk) IS UNKNOWN;
SELECT t1.pk, NULL NOT IN (SELECT t2a.i FROM t2a WHERE t2a.pk = t1.pk) FROM t1;
EXPLAIN
SELECT * FROM t1 WHERE NULL NOT IN (SELECT t2b.i FROM t2b WHERE t2b.pk = t1.pk);
SELECT * FROM t1 WHERE NULL NOT IN (SELECT t2b.i FROM t2b WHERE t2b.pk = t1.pk);
SELECT * FROM t1 WHERE NULL IN (SELECT t2b.i FROM t2b WHERE t2b.pk = t1.pk) IS UNKNOWN;
SELECT t1.pk, NULL NOT IN (SELECT t2b.i FROM t2b WHERE t2b.pk = t1.pk) FROM t1;
EXPLAIN
SELECT * FROM t1 WHERE NULL NOT IN (SELECT t2c.i FROM t2c WHERE t2c.pk = t1.pk);
SELECT * FROM t1 WHERE NULL NOT IN (SELECT t2c.i FROM t2c WHERE t2c.pk = t1.pk);
SELECT * FROM t1 WHERE NULL IN (SELECT t2c.i FROM t2c WHERE t2c.pk = t1.pk) IS UNKNOWN;
SELECT t1.pk, NULL NOT IN (SELECT t2c.i FROM t2c WHERE t2c.pk = t1.pk) FROM t1;
EXPLAIN
SELECT * FROM t1 WHERE (NULL, 1) NOT IN (SELECT t2a.i, t2a.pk FROM t2a WHERE t2a.pk = t1.pk);
SELECT * FROM t1 WHERE (NULL, 1) NOT IN (SELECT t2a.i, t2a.pk FROM t2a WHERE t2a.pk = t1.pk);
drop table t1, t2a, t2b, t2c;
--echo #
--echo # End of 5.1 tests.
--echo #