mysql日志触发器实现代码

sql语句

DROP TRIGGER

IF

EXISTS sys_menu_edit;

CREATE TRIGGER sys_menu_edit BEFORE UPDATE ON sys_menu FOR EACH ROW

BEGIN

INSERT INTO `g4m`.`sys_log` ( `table_name`, `val_id`, `data_json` )

VALUES

(

‘sys_menu’,

old.id,

CONCAT(

“{“,

CONCAT_WS(

‘,’,

CONCAT_WS( old.id, ‘”id”:”‘, ‘”‘ ),

CONCAT_WS( old.CODE, ‘”code”:”‘, ‘”‘ ),

CONCAT_WS( old.type_dic, ‘”type_dic”:”‘, ‘”‘ ),

CONCAT_WS( old.NAME, ‘”name”:”‘, ‘”‘ ),

CONCAT_WS( old.pid, ‘”pid”:”‘, ‘”‘ ),

CONCAT_WS( old.status_dic, ‘”status_dic”:”‘, ‘”‘ ),

CONCAT_WS( old.url, ‘”url”:”‘, ‘”‘ ),

CONCAT_WS( old.path, ‘”path”:”‘, ‘”‘ ),

CONCAT_WS( old.icon, ‘”icon”:”‘, ‘”‘ ),

CONCAT_WS( old.sort, ‘”sort”:”‘, ‘”‘ ),

CONCAT_WS( old.remark, ‘”remark”:”‘, ‘”‘ ),

CONCAT_WS( old.create_time, ‘”create_time”:”‘, ‘”‘ ),

CONCAT_WS( old.modify_uer_id, ‘”modify_uer_id”:”‘, ‘”‘ ),

CONCAT_WS( old.modify_time, ‘”modify_time”:”‘, ‘”‘ )

),

“}”

)

);MySQL用触发器实现日志记录

CREATE TRIGGER news_log AFTER INSERT ON news;

FOR EACH ROW INSERT INTO `news_logs` select *, now() from news where newsid = (select max(newsid ) from news);

DROP TRIGGER news_log ;

一共两个表，一个是原始表 news，一个是日志表news_logs(多了一列日期)，可以实现新插入时自动记录日志，不用写代码了。 类似还可以实现更新时插入更新日志，详情可查看 MySQL 的文档。


mysql 用触发器记录操作补充

mysql 不能在一个触发器中进行insert,update,delete操作，需分别建三个触发器

insert触发器：

delimiter $$

create trigger tri_city_insert

after insert

on t_xfw_city

for each row

begin

  insert into t_tri_city(id,name,provinceid,ctype)

  values(new.id,new.name,new.provinceid,1);

endupdate触发器：

delimiter $$

create trigger tri_city_update

after update

on t_xfw_city

for each row

begin

  insert into t_tri_city(id,name,provinceid,ctype)

  values(new.id,new.name,new.provinceid,2);

enddelete触发器：

delimiter $$

create trigger tri_city_delete

after delete

on t_xfw_city

for each row

begin

  insert into t_tri_city(id,name,provinceid,ctype)

  values(old.id,old.name,old.provinceid,3);

end对一个表建三个触发器有些麻烦，不知道还有没有好点的方法