# # test of left outer join for tests that depends on innodb # --source include/have_innodb.inc # # 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;