创建SqlServer数据库触发器脚本 范例

-- 会员表
if object_id ( ' userinfo ' , ' u ' ) is not null
drop table userinfo
go
create table userinfo(userid int primary key ,user_tegral int , level int )
insert into userinfo select 1 , 0 , 0
go
-- 会员等级表
if object_id ( ' userlevel ' , ' u ' ) is not null
drop table userlevel
go

-- 插入测试数据
create table userlevel( level int primary key ,mlevel_point decimal ( 10 , 2 ))
insert into userlevel select 0 , 0
insert into userlevel select 1 , 100
insert into userlevel select 2 , 200
insert into userlevel select 3 , 300
go



-- 触发器
create trigger TR_userInfor
on userinfo for update
as
begin

update a
set a. level = b. level
from userinfo a,userlevel b
where a.userid in ( Select userid from inserted) and a.user_tegral >= b.mlevel_point and
a.user_tegral < ( Select min (mlevel_point)
from userlevel where mlevel_point > b.mlevel_point)
end

-- 测试
update userinfo
set user_tegral = 100
where userid = 1

select * from userinfo


-- 另外一个触发器
set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
go
ALTER TRIGGER [ AlterName ]
ON [ dbo ] . [ FS_User ]
FOR INSERT
AS
BEGIN
SET NOCOUNT ON ;
UPDATE dbo.FS_User SET uname = ( SELECT uname FROM Inserted) + ' @ml '
WHERE id IN ( SELECT id FROM inserted)
END