use master
create database db1 --测试库1
create database db2 --测试库2
go
create table db1.dbo.T_Goods(id int ,column1 varchar(5)) --测试表1
create table db2.dbo.T_Goods(id int ,column1 varchar(5)) --测试表2
go
use db1 --建立触发器
go
create trigger db1_T_Goods_insert_update on T_Goods
for insert,update
as
delete from db2.dbo.T_Goods
where id in(select id from deleted)
insert into db2.dbo.T_Goods
select * from insertedgo--测试insert
insert into db1.dbo.T_Goods
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'select * from db1.dbo.T_Goods
select * from db2.dbo.T_Goods--测试update
update db1.dbo.T_Goods set column1='CCCCC' where id=2select * from db1.dbo.T_Goods
select * from db2.dbo.T_Goods --删除测试库
USE [master]
GO
ALTER DATABASE [db1] SET SINGLE_USER WITH ROLLBACK IMMEDIATE
GO
ALTER DATABASE [db2] SET SINGLE_USER WITH ROLLBACK IMMEDIATE
GO
DROP DATABASE [db1]
go
DROP DATABASE [db2]
GO
create database db1 --测试库1
create database db2 --测试库2
go
create table db1.dbo.T_Goods(id int ,column1 varchar(5)) --测试表1
create table db2.dbo.T_Goods(id int ,column1 varchar(5)) --测试表2
go
use db1 --建立触发器
go
create trigger db1_T_Goods_insert_update on T_Goods
for insert,update
as
delete from db2.dbo.T_Goods
where id in(select id from deleted)
insert into db2.dbo.T_Goods
select * from insertedgo--测试insert
insert into db1.dbo.T_Goods
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'select * from db1.dbo.T_Goods
select * from db2.dbo.T_Goods--测试update
update db1.dbo.T_Goods set column1='CCCCC' where id=2select * from db1.dbo.T_Goods
select * from db2.dbo.T_Goods --删除测试库
USE [master]
GO
ALTER DATABASE [db1] SET SINGLE_USER WITH ROLLBACK IMMEDIATE
GO
ALTER DATABASE [db2] SET SINGLE_USER WITH ROLLBACK IMMEDIATE
GO
DROP DATABASE [db1]
go
DROP DATABASE [db2]
GO
在for insert,update
这里加上个delete即可
这个例子是同台机器的情况
--用触发器即时同步两个表的实例:
--测试环境:SQL2000,远程主机名:xz,用户名:sa,密码:无,数据库名:test
--创建测试表,不能用标识列做主键,因为不能进行正常更新
--在远程主机上建表
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
--以下操作在本机进行
--在本机上建表及做同步处理的工作
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 identity(1,1) 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
--启动本机的MSDTC服务
exec master..xp_cmdshell 'net start msdtc',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