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Merge neptunus.(none):/home/msvensson/mysql/mysql-5.1

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into  neptunus.(none):/home/msvensson/mysql/mysql-5.1-maint
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msvensson@neptunus.(none)
2007-02-06 15:46:17 +01:00
parent 72fbdf2933 4a6770e06e
commit e4001b3b5a
305 changed files with 6041 additions and 3924 deletions
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73
mysql-test/t/select.test
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@ -3135,6 +3135,79 @@ SELECT * FROM t1 LIMIT 2, -1;
DROP TABLE t1;
#
# 25407: wrong estimate of NULL keys for unique indexes
#
CREATE TABLE t1 (
ID_with_null int NULL,
ID_better int NOT NULL,
INDEX idx1 (ID_with_null),
INDEX idx2 (ID_better)
);
INSERT INTO t1 VALUES (1,1), (2,1), (null,3), (null,3), (null,3), (null,3);
INSERT INTO t1 SELECT * FROM t1 WHERE ID_with_null IS NULL;
INSERT INTO t1 SELECT * FROM t1 WHERE ID_with_null IS NULL;
INSERT INTO t1 SELECT * FROM t1 WHERE ID_with_null IS NULL;
INSERT INTO t1 SELECT * FROM t1 WHERE ID_with_null IS NULL;
INSERT INTO t1 SELECT * FROM t1 WHERE ID_with_null IS NULL;
SELECT COUNT(*) FROM t1 WHERE ID_with_null IS NULL;
SELECT COUNT(*) FROM t1 WHERE ID_better=1;
EXPLAIN SELECT * FROM t1 WHERE ID_better=1 AND ID_with_null IS NULL;
DROP INDEX idx1 ON t1;
CREATE UNIQUE INDEX idx1 ON t1(ID_with_null);
EXPLAIN SELECT * FROM t1 WHERE ID_better=1 AND ID_with_null IS NULL;
DROP TABLE t1;
CREATE TABLE t1 (
ID1_with_null int NULL,
ID2_with_null int NULL,
ID_better int NOT NULL,
INDEX idx1 (ID1_with_null, ID2_with_null),
INDEX idx2 (ID_better)
);
INSERT INTO t1 VALUES (1,1,1), (2,2,1), (3,null,3), (null,3,3), (null,null,3),
(3,null,3), (null,3,3), (null,null,3), (3,null,3), (null,3,3), (null,null,3);
INSERT INTO t1 SELECT * FROM t1 WHERE ID1_with_null IS NULL;
INSERT INTO t1 SELECT * FROM t1 WHERE ID2_with_null IS NULL;
INSERT INTO t1 SELECT * FROM t1 WHERE ID1_with_null IS NULL;
INSERT INTO t1 SELECT * FROM t1 WHERE ID2_with_null IS NULL;
INSERT INTO t1 SELECT * FROM t1 WHERE ID1_with_null IS NULL;
INSERT INTO t1 SELECT * FROM t1 WHERE ID2_with_null IS NULL;
SELECT COUNT(*) FROM t1 WHERE ID1_with_null IS NULL AND ID2_with_null=3;
SELECT COUNT(*) FROM t1 WHERE ID1_with_null=3 AND ID2_with_null IS NULL;
SELECT COUNT(*) FROM t1 WHERE ID1_with_null IS NULL AND ID2_with_null IS NULL;
SELECT COUNT(*) FROM t1 WHERE ID_better=1;
EXPLAIN SELECT * FROM t1
WHERE ID_better=1 AND ID1_with_null IS NULL AND ID2_with_null=3 ;
EXPLAIN SELECT * FROM t1
WHERE ID_better=1 AND ID1_with_null=3 AND ID2_with_null=3 IS NULL ;
EXPLAIN SELECT * FROM t1
WHERE ID_better=1 AND ID1_with_null IS NULL AND ID2_with_null IS NULL;
DROP INDEX idx1 ON t1;
CREATE UNIQUE INDEX idx1 ON t1(ID1_with_null,ID2_with_null);
EXPLAIN SELECT * FROM t1
WHERE ID_better=1 AND ID1_with_null IS NULL AND ID2_with_null=3 ;
EXPLAIN SELECT * FROM t1
WHERE ID_better=1 AND ID1_with_null=3 AND ID2_with_null IS NULL ;
EXPLAIN SELECT * FROM t1
WHERE ID_better=1 AND ID1_with_null IS NULL AND ID2_with_null IS NULL;
EXPLAIN SELECT * FROM t1
WHERE ID_better=1 AND ID1_with_null IS NULL AND
(ID2_with_null=1 OR ID2_with_null=2);
DROP TABLE t1;
# Bug #22026: Warning when using IF statement and large unsigned bigint
#