drop table vn_lock
วิธีสร้างใหม่
CREATE TABLE `vn_lock` (
  `vn` varchar(13) NOT NULL DEFAULT '',
  `lock_date_time` datetime DEFAULT NULL,
  `lock_computer` varchar(25) DEFAULT NULL,
  PRIMARY KEY (`vn`),
  KEY `lock_computer` (`lock_computer`),
  KEY `ix_lock_date_time` (`lock_date_time`),
  KEY `lock_date_time` (`lock_date_time`),
  KEY `ix_vn` (`vn`)
) ENGINE=MyISAM DEFAULT CHARSET=tis620