SQL 数据库跨库连接

--Open
exec sp_configure 'show advanced options',1
reconfigure
exec sp_configure 'Ad Hoc Distributed Queries',1
reconfigure
GO
declare @TUser table
(
 [UserId] [int],
 [UserName] [varchar](50),
 [User_Password] [varchar](50),
 [Firm] [varchar](50),
 [Email] [varchar](50),
 [LastLogin] [datetime],
 [DefaultRole] [int]
)

insert @TUser
select * from OPENDATASOURCE(
         'SQLOLEDB',
         'Data Source=192.168.168.113;User ID=sa;Password=sa'
         ).ProductionMgr.dbo.D_User

 

declare @TGroupInfo table
(
 [Grpid] [int],
 [GroupName] [varchar](50)
)
insert into @TGroupInfo

select * from OPENDATASOURCE(
         'SQLOLEDB',
         'Data Source=192.168.168.116;User ID=sa;Password=sa'
         ).ProductionMgr.dbo.GroupInfo

 

declare @TUserAndGroup table
(
 [UserId] [int],
 [GrpId] [int]
)
insert into @TUserAndGroup

select * from OPENDATASOURCE(
         'SQLOLEDB',
         'Data Source=192.168.168.113;User ID=sa;Password=sa'
         ).ProductionMgr.dbo.UserAndGroup

select * from @TUser as u
inner join @TUserAndGroup as uag
on u.UserId=uag.UserId
inner join @TGroupInfo as g
on g.GrpId=uag.GrpId

--close
exec sp_configure 'Ad Hoc Distributed Queries',0
reconfigure
exec sp_configure 'show advanced options',0
reconfigure
GO

 

本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/rmak2008/archive/2008/12/16/3530618.aspx