有个问题
--修改同步
create trigger tr_update_author on author
for update
as
set xact_abort on
update b set name=i.name,telphone=i.telphone
from srv2.库名.dbo.author b,inserted i
where b.id=i.id
go
--删除同步
create trigger tr_delete_author on author
for delete
as
set xact_abort on
delete b
from srv2.库名.dbo.author b,deleted d
where b.id=d.id
go
--创建测试表,不能用标识列做主键,因为不能进行正常更新
--在本机上创建测试表,远程主机上也要做同样的建表操作,只是不写触发器
if exists (select * from dbo.sysobjects where id = object_id(N'[test]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table [test]
create table test(id int not null constraint PK_test primary key
,name varchar(10))
go
--创建同步的触发器
create trigger t_test on test
for insert,update,delete
as
set XACT_ABORT on
--启动远程服务器的MSDTC服务
exec master..xp_cmdshell 'isql /S"xz" /U"sa" /P"" /q"exec master..xp_cmdshell ''net start msdtc'',no_output"',no_output
--进行分布事务处理,如果表用标识列做主键,用下面的方法
BEGIN DISTRIBUTED TRANSACTION
delete from openrowset('sqloledb','xz';'sa';'',test.dbo.test)
where id in(select id from deleted)
insert into openrowset('sqloledb','xz';'sa';'',test.dbo.test)
select * from inserted
commit tran
go
--插入数据测试
insert into test
select 1,'aa'
union all select 2,'bb'
union all select 3,'c'
union all select 4,'dd'
union all select 5,'ab'
union all select 6,'bc'
union all select 7,'ddd'
--删除数据测试
delete from test where id in(1,4,6)
--更新数据测试
update test set name=name+'_123' where id in(3,5)
--显示测试的结果
select * from test a full join
openrowset('sqloledb','xz';'sa';'',test.dbo.test) b on a.id=b.id
--a.在srv1..author中创建触发器,实现数据即时同步
--新增同步
create trigger tr_insert_author on author
for insert
as
set xact_abort on
insert srv2.库名.dbo.author(id,name,telphone)
select id,name,telphone from inserted
go
--修改同步
create trigger tr_update_author on author
for update
as
set xact_abort on
update b set name=i.name,telphone=i.telphone
from srv2.库名.dbo.author b,inserted i
where b.id=i.id
go
--删除同步
create trigger tr_delete_author on author
for delete
as
set xact_abort on
delete b
from srv2.库名.dbo.author b,deleted d
where b.id=d.id
go
--3.实现同步处理的方法2,定时同步
--在srv1中创建如下的同步处理存储过程
create proc p_process
as
--更新修改过的数据
update b set name=i.name,telphone=i.telphone
from srv2.库名.dbo.author b,author i
where b.id=i.id and
(b.name<>i.name or b.telphone<>i.telphone)
--插入新增的数据
insert srv2.库名.dbo.author(id,name,telphone)
select id,name,telphone from author i
where not exists(
select * from srv2.库名.dbo.author where id=i.id)
--删除已经删除的数据(如果需要的话)
delete b
from srv2.库名.dbo.author b
where not exists(
select * from author where id=b.id)
go