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Merge ahristov@bk-internal.mysql.com:/home/bk/mysql-5.1-new

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into lmy004.:/work/mysql-5.1-bug16415
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2006-03-25 13:05:34 +01:00
parent 9f9832e62d 89822edbd5
commit 8e77d37f6e
3 changed files with 46 additions and 4 deletions
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20
mysql-test/t/join_outer.test
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@@ -759,3 +759,23 @@ EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON t1.a = t2.a WHERE t1.a > IF(t1.a = t2.b
DROP TABLE t1,t2;
#
# Test for bug #17164: ORed FALSE blocked conversion of outer join into join
#
CREATE TABLE t1 (id int(11) NOT NULL PRIMARY KEY, name varchar(20),
INDEX (name)) ENGINE=InnoDB;
CREATE TABLE t2 (id int(11) NOT NULL PRIMARY KEY, fkey int(11),
FOREIGN KEY (fkey) REFERENCES t2(id)) ENGINE=InnoDB;
INSERT INTO t1 VALUES (1,'A1'),(2,'A2'),(3,'B');
INSERT INTO t2 VALUES (1,1),(2,2),(3,2),(4,3),(5,3);
EXPLAIN
SELECT COUNT(*) FROM t2 LEFT JOIN t1 ON t2.fkey = t1.id
WHERE t1.name LIKE 'A%';
EXPLAIN
SELECT COUNT(*) FROM t2 LEFT JOIN t1 ON t2.fkey = t1.id
WHERE t1.name LIKE 'A%' OR FALSE;
DROP TABLE t1,t2;