Details
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Type:
Bug
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Status: Closed
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Priority:
Major
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Resolution: Fixed
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Affects Version/s: None
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Fix Version/s: None
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Component/s: None
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Labels:
Description
Using BETWEEN in the WHERE clause returns different results depending on the query plan:
--source include/have_innodb.inc
CREATE TABLE t1 ( f1 time(3), f2 datetime, KEY (f1)) Engine=innodb;
INSERT IGNORE INTO t1 VALUES ('07:07:20.000','0000-00-00 00:00:00.000'),('15:47:11.000','2000-12-22 17:22:54.000'),
('17:41:58.000','2006-09-09 00:00:00.000'),('00:20:03.000','2006-01-19 00:00:00.000'),
('13:27:12.000','0000-00-00 00:00:00.000'),('00:20:04.000','2001-12-22 10:14:36.000');
SELECT * FROM t1 FORCE KEY ( f1 ) WHERE f2 AND f1 BETWEEN '02:18:49' AND '2006-11-16 09:33:34' ;
returns 1 row
SELECT * FROM t1 IGNORE KEY ( f1 ) WHERE f2 AND f1 BETWEEN '02:18:49' AND '2006-11-16 09:33:34' ;
returns 2 rows
in either case, no warnings are produced. Not repeatable with TIME(0).
Even though the above example with with TIME(3) and a slightly weird BETWEEN, the issue is also repeatable with DATETIME(3) and a range expression that involves only DATETIME values.
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Re: Diverging results with TIME(3) and ranges depending on the execution plan in 5.1-micro
Another test case:
--source include/have_innodb.inc
CREATE TABLE t1 ( f1 int, f2 datetime(3), KEY (f2), KEY (f1,f2)) ENGINE=InnoDB;
INSERT IGNORE INTO t1 VALUES (2,'0000-00-00 00:00:00.000'),(2,'2007-01-14 15:18:50.000');
SELECT * FROM t1 FORCE KEY ( f2 ) WHERE f2 <= '2004-08-28 23:36:31.000000' ;
SELECT * FROM t1 IGNORE KEY ( f2 ) WHERE f2 <= '2004-08-28 23:36:31.000000' ;
Launchpad bug id: 743017
Diverging results with TIME(3) and BETWEEN depending on the execution plan in 5.1-micro
The following query which mixes date and datetime in BETWEEN returns different results depending on the query plan:
--source include/have_innodb.inc
CREATE TABLE t1 ( f1 time(3), f2 datetime, KEY (f1)) Engine=innodb;
INSERT IGNORE INTO t1 VALUES ('07:07:20.000','0000-00-00 00:00:00.000'),('15:47:11.000','2000-12-22 17:22:54.000'),
('17:41:58.000','2006-09-09 00:00:00.000'),('00:20:03.000','2006-01-19 00:00:00.000'),
('13:27:12.000','0000-00-00 00:00:00.000'),('00:20:04.000','2001-12-22 10:14:36.000');
SELECT * FROM t1 FORCE KEY ( f1 ) WHERE f2 AND f1 BETWEEN '02:18:49' AND '2006-11-16 09:33:34' ;
returns 1 row
SELECT * FROM t1 IGNORE KEY ( f1 ) WHERE f2 AND f1 BETWEEN '02:18:49' AND '2006-11-16 09:33:34' ;
returns 2 rows
in either case, no warnings are produced. Not repeatable with TIME(0).