我有一张这样的桌子
/*Table: pageprivilege*/
------------------------
/*Column Information*/
----------------------
FIELD TYPE COLLATION NULL KEY DEFAULT Extra PRIVILEGES COMMENT
------ ---------------- ----------------- ------ ------ ------- -------------- ------------------------------- -------
id INT(10) UNSIGNED (NULL) NO PRI (NULL) AUTO_INCREMENT SELECT,INSERT,UPDATE,REFERENCES
pageid VARCHAR(20) latin1_swedish_ci YES (NULL) SELECT,INSERT,UPDATE,REFERENCES
roleid TINYINT(4) (NULL) YES (NULL) SELECT,INSERT,UPDATE,REFERENCES
ad TINYINT(1) (NULL) YES 0 SELECT,INSERT,UPDATE,REFERENCES
ed TINYINT(1) (NULL) YES 0 SELECT,INSERT,UPDATE,REFERENCES
dl TINYINT(1) (NULL) YES 0 SELECT,INSERT,UPDATE,REFERENCES
rd TINYINT(1) (NULL) YES 0 SELECT,INSERT,UPDATE,REFERENCES
st TINYINT(1) (NULL) YES 0 SELECT,INSERT,UPDATE,REFERENCES
我有一个条件，如果行被更新，这样
ad、ed、dl、rd 都设置为 0 …