UPDATE `users` SET `logout_date`='2010-09-08 01:01:43' WHERE UNIX_TIMESTAMP(DATE_SUB('2010-09-08 01:01:43', INTERVAL  SECOND)) > UNIX_TIMESTAMP(last_request_time) AND (`logout_date` ='0000-00-00 00:00:00')You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')) > UNIX_TIMESTAMP(last_request_time) AND (`logout_date` ='0000-00-00 00:00:00'' at line 1