MySQL数据库安全之防止撰改的方法_MySQL

DROP TRIGGER IF EXISTS `members`;SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='';DELIMITER //CREATE TRIGGER `members` BEFORE UPDATE ON `members` FOR EACH ROW BEGIN set new.name = old.name; set new.cellphone = old.cellphone; set new.email = old.email; set new.password = old.password;END//DELIMITER ;SET SQL_MODE=@OLD_SQL_MODE;

CREATE TABLE `account` ( `id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT, `user` VARCHAR(50) NOT NULL DEFAULT '0', `cash` FLOAT NOT NULL DEFAULT '0', PRIMARY KEY (`id`))COLLATE='utf8_general_ci'ENGINE=InnoDB;

INSERT INTO `test`.`account` (`user`, `cash`) VALUES ('neo', -10);INSERT INTO `test`.`account` (`user`, `cash`) VALUES ('neo', -5);INSERT INTO `test`.`account` (`user`, `cash`) VALUES ('neo', 30);INSERT INTO `test`.`account` (`user`, `cash`) VALUES ('neo', -20);

DROP TRIGGER IF EXISTS `account`;SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='';DELIMITER //CREATE TRIGGER `account` BEFORE UPDATE ON `account` FOR EACH ROW BEGIN set new.cash = old.cash;END//DELIMITER ;SET SQL_MODE=@OLD_SQL_MODE;