Mysql视图, 存储过程, 触发器, 事务

1.触发器 mysql> delimiter | mysql> create trigger beforeinsertuserinfo     -> before insert on userinfo     -> for each row begin     ->   insert into userinfolog values(now(),CONCAT(new.userid,new.username));     -> end;     -> | mysql> delimiter ; mysql> show triggers; 2.存储过程 mysql> delimiter // mysql> create procedure spinsertuserinfo(     -> puserid int,pusername varchar(10)     -> ,puserbirthday date     -> )     -> begin     -> insert into userinfo values(puserid,pusername,puserbirthday);     -> end;     -> // mysql> show procedure status like 'spinsertuserinfo'; mysql> call spinsertuserinfo(1,'zhangsan',current_date); mysql> select * from userinfo; 3.自定义函数 mysql> update userinfo     -> set userbirthday='2000.01.01'     -> where userid='1'; mysql> drop function if exists fngetage; mysql> delimiter // mysql> create function fngetage(pbirthday date)     -> returns integer     -> begin     -> return year(now()) - year(pbirthday);     -> end     -> // 4.视图 mysql> create view viewuserinfo     -> as select * ,fngetage(userbirthday) as userage from userinfo; mysql> select * from viewuserinfo; 清除日志记录 mysql> truncate table userinfolog; mysql> delete from userinfolog;