MySQL触发器之判断更新操作前后数据是否改变

create TRIGGER cfq_on_user_add
after insert on user
for each ROW
BEGIN
 insert into cfq_tab(id,type_id,type,status) values (null,new.UID,1,0);
end;

//DROP TRIGGER IF EXISTS cfq_on_user_edit
create TRIGGER cfq_on_user_edit
after update on user
for each ROW
BEGIN
if new.USER_NAME <>old.USER_NAME or new.DEPT_ID <> old.DEPT_ID then
 insert into cfq_tab(id,type_id,type,status) values (null,new.UID,2,0);
end if;
end;

DELIMITER $
create trigger <触发器名> after <操作名（insert、delete、update）> on <源表名> for each row
begin
<sql语句>
END $;
DELIMITER ;

DELIMITER $
create trigger user_insert after insert on upms_user for each row
begin
INSERT INTO `storage`.upms_user(id,username,create_time,creator,update_time,updater) 
VALUES(new.id,new.username,new.create_time,new.creator,new.update_time,new.updater);
END $;
DELIMITER ;

DELIMITER $
CREATE TRIGGER user_delete AFTER DELETE ON upms_user FOR EACH ROW
BEGIN
DELETE FROM `storage`.upms_user WHERE id=old.id;
END $;
DELIMITER ;

DELIMITER $
CREATE TRIGGER user_update AFTER UPDATE ON upms_user FOR EACH ROW
BEGIN
UPDATE `storage`.upms_user SET username=new.username,create_time=new.create_time,creator=new.creator,
update_time=new.update_time,updater=new.updater where id=old.id;
END $;
DELIMITER ;