diff options
Diffstat (limited to 'mysql-test/r/select.result')
| -rw-r--r-- | mysql-test/r/select.result | 73 |
1 files changed, 72 insertions, 1 deletions
diff --git a/mysql-test/r/select.result b/mysql-test/r/select.result index 1944edf6ade..604ff2be532 100644 --- a/mysql-test/r/select.result +++ b/mysql-test/r/select.result @@ -4423,9 +4423,14 @@ CREATE TABLE t1(a INT); INSERT INTO t1 VALUES (2),(3); # Should not crash SELECT 1 FROM t1 WHERE a <> 1 AND NOT -ROW(a,a) <=> ROW((SELECT 1 FROM t1 WHERE 1=2),(SELECT 1 FROM t1)) +ROW(1,a) <=> ROW(1,(SELECT 1 FROM t1)) INTO @var0; ERROR 21000: Subquery returns more than 1 row +SELECT 1 FROM t1 WHERE a <> 1 AND NOT +ROW(a,a) <=> ROW((SELECT 1 FROM t1 WHERE 1=2),(SELECT 1 FROM t1)); +1 +1 +1 DROP TABLE t1; End of 5.0 tests create table t1(a INT, KEY (a)); @@ -4577,4 +4582,70 @@ field2 15:13:38 drop table A,AA,B,BB; #end of test for bug#45266 +# +# Bug#33546: Slowdown on re-evaluation of constant expressions. +# +CREATE TABLE t1 (a INT); +INSERT INTO t1 VALUES (1), (2), (3), (4), (5), (6), (7), (8), (9), (10); +CREATE TABLE t2 (b INT); +INSERT INTO t2 VALUES (2); +SELECT * FROM t1 WHERE a = 1 + 1; +a +2 +EXPLAIN EXTENDED SELECT * FROM t1 WHERE a = 1 + 1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 10 100.00 Using where +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where (`test`.`t1`.`a` = <cache>((1 + 1))) +SELECT * FROM t1 HAVING a = 1 + 1; +a +2 +EXPLAIN EXTENDED SELECT * FROM t1 HAVING a = 1 + 1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 10 100.00 +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` having (`test`.`t1`.`a` = <cache>((1 + 1))) +SELECT * FROM t1, t2 WHERE a = b + (1 + 1); +a b +4 2 +EXPLAIN EXTENDED SELECT * FROM t1, t2 WHERE a = b + (1 + 1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t2 system NULL NULL NULL NULL 1 100.00 +1 SIMPLE t1 ALL NULL NULL NULL NULL 10 100.00 Using where +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a`,'2' AS `b` from `test`.`t1` where (`test`.`t1`.`a` = <cache>(('2' + (1 + 1)))) +SELECT * FROM t2 LEFT JOIN t1 ON a = b + 1; +b a +2 3 +EXPLAIN EXTENDED SELECT * FROM t2 LEFT JOIN t1 ON a = b + 1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t2 system NULL NULL NULL NULL 1 100.00 +1 SIMPLE t1 ALL NULL NULL NULL NULL 10 100.00 +Warnings: +Note 1003 select '2' AS `b`,`test`.`t1`.`a` AS `a` from `test`.`t1` where 1 +EXPLAIN EXTENDED SELECT * FROM t1 WHERE a > UNIX_TIMESTAMP('2009-03-10 00:00:00'); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 10 100.00 Using where +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where (`test`.`t1`.`a` > <cache>(unix_timestamp('2009-03-10 00:00:00'))) +CREATE FUNCTION f1() RETURNS INT DETERMINISTIC +BEGIN +SET @cnt := @cnt + 1; +RETURN 1; +END;| +SET @cnt := 0; +SELECT * FROM t1 WHERE a = f1(); +a +1 +SELECT @cnt; +@cnt +1 +EXPLAIN EXTENDED SELECT * FROM t1 WHERE a = f1(); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 10 100.00 Using where +Warnings: +Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where (`test`.`t1`.`a` = <cache>(`f1`())) +DROP TABLE t1, t2; +DROP FUNCTION f1; +# End of bug#33546 End of 5.1 tests |