MySQL 触发器

Posted 2021-01-09 降魔

CREATE TABLE `NewTable` (

`id`  int(10) UNSIGNED NOT NULL AUTO_INCREMENT ,

`name`  varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL ,

`pwd`  varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL ,

PRIMARY KEY (`id`)

)

ENGINE=InnoDB

DEFAULT CHARACTER SET=utf8 COLLATE=utf8_general_ci

AUTO_INCREMENT=7

ROW_FORMAT=COMPACT

;

CREATE DEFINER=`root`@`localhost` TRIGGER `add` AFTER INSERT ON `NewTable`

FOR EACH ROW BEGIN

    insert into ht_log (logtime,content) values (NOW(),CONCAT(‘添加用户‘,new.name));

END;

CREATE DEFINER=`root`@`localhost` TRIGGER `update` AFTER UPDATE ON `NewTable`

FOR EACH ROW BEGIN

    insert into ht_log (logtime,content) values (NOW(),CONCAT(‘修改用户‘,old.name,‘->‘,new.name,‘;‘,old.pwd,‘->‘,new.pwd));

END;

CREATE DEFINER=`root`@`localhost` TRIGGER `delete` AFTER DELETE ON `NewTable`

FOR EACH ROW BEGIN

    insert into ht_log (logtime,content) values (NOW(),CONCAT(‘删除用户‘,old.name));

END;