27 lines
745 B
Plaintext
27 lines
745 B
Plaintext
|
#
|
||
|
|
# 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;
|