复制代码 代码如下:
create table test3(id int primary key not null identity(1,1),uname varchar(20),uage int); create table test3_bak(id int primary key not null identity(1,1),bid int,uname varchar(20), uage int,active char(1));
第二步，编写备份用的触发器，只有更新或者是插入的时候才触发
复制代码 代码如下:
alter trigger test3_bak_insert_update on test3 for insert,update as declare @id int declare @uname varchar(20) declare @uage int begin select @id=id,@uname=uname,@uage=uage from inserted if @id<>0 begin update test3_bak set active='0' where bid=@id insert into test3_bak(bid,uname,uage,active) values(@id,@uname,@uage,'1') end end
第三步，测试数据：
复制代码 代码如下:
insert into test3(uname,uage) values('FLB',20) insert into test3(uname,uage) values('FLB1',21) insert into test3(uname,uage) values('FLB2',22) update test3 set uage=100 where id=27 delete from test3 where id=20
最后，你可自己采用下面方法查询跟踪两个表的数据变化：
复制代码 代码如下:
select * from test3 select * from test3_bak