MySQL 查询后插入或更新导致表损坏解决方法

影响版本 MySQL 5.0 版本在5.0.70以下;MySQL 5.1 版本在5.1.28 以下

出现过程

/*CREATE TABLE*/
CREATE TABLE `certuserid` (
`certUserID` int(11) NOT NULL auto_increment,
`userID` int(11) NOT NULL,
`certificateID` int(11) NOT NULL,
`usertypeID` int(11) NOT NULL,
`createdDatetime` datetime NOT NULL,
PRIMARY KEY (`certUserID`)
) ENGINE=MyISAM AUTO_INCREMENT=2 DEFAULT CHARSET=utf8 CHECKSUM=1 DELAY_KEY_WRITE=1
ROW_FORMAT=DYNAMIC

/*INSERT*/
INSERT INTO certuserid ( userID, certificateID, userTypeID, createdDatetime ) VALUES ( 5,
7, 6, '20080903014257' )

/*SELECT*/
SELECT * FROM certuserid

/*ERROR CODE */
Error Code : 1194
Table 'certuserid' is marked as crashed and should be repaired
(0 ms taken)

错误消息：Table 'certuserid' is marked as crashed and should be repaired

检查表提示： Found too long record (26) at 0

修复表的时候提示

Table           Op      Msg_type  Msg_text
--------------  ------  --------  ----------------------------------------
auc.certuserid  repair  info      Wrong bytesec:   3-  0- 26 at 0; Skipped
auc.certuserid  repair  status    Operation failed

解决方法：去掉创建表的时候的 ROW_FORMAT=DYNAMIC

错误解释（关联bug http://bugs.mysql.com/bug.php?id=37310）

http://lists.mysql.com/commits/52560

Problem: data consistency check (maximum record length) for a correct
MyISAM table with CHECKSUM=1 and ROW_FORMAT=DYNAMIC option
may fail due to wrong inner MyISAM parameter. In result we may
have the table marked as 'corrupted'.

Fix: properly set MyISAM maximum record length parameter.