create table test3(id primary key not null
identity(1,1),uname varchar(20),uage );
create table test3_bak(id primary key not
null identity(1,1),bid ,uname varchar(20),
uage ,active char(1));
第 2步编写备份用触发器只有更新或者是插入时候才触发
复制代码 代码如下:
alter trigger test3_bak_insert_update
on test3
for insert,update
as
declare @id
declare @uname varchar(20)
declare @uage
begin
select @id=id,@uname=uname,@uage=uage from inserted
@id<>0
begin
update test3_bak active='0' where bid=@id
insert o test3_bak(bid,uname,uage,active)
values(@id,@uname,@uage,'1')
end
end
第 3步测试数据: 复制代码 代码如下:
insert o test3(uname,uage) values('FLB',20)
insert o test3(uname,uage) values('FLB1',21)
insert o test3(uname,uage) values('FLB2',22)
update test3 uage=100 where id=27
delete from test3 where id=20
最后你可自己采用下面思路方法查询跟踪两个表数据变化:
复制代码 代码如下:
select * from test3
select * from test3_bak
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