sqlserver跨服务器查询

两个sqlserver数据库在不同的服务器上如何插入数据哪？

 EXEC sp_configure 'show advanced options',
 RECONFIGURE
 EXEC sp_configure 'Ad Hoc Distributed Queries',
 RECONFIGURE  

 INSERT INTO [a].[dbo].[at]
            ([at1]
            ,[at2]
            ,[at3])
      SELECT [bt1]
            ,[bt2]
            ,[bt3]
        FROM OPENROWSET('SQLNCLI','Server=ip;PWD=pwd;UID=uid;DataBase=db','SELECT [bt1], [bt2], [bt3], [bt4] FROM [bt]') AS b
       WHERE [bt3] =  AND bt4 < GETDATE()
             AND NOT EXISTS (SELECT  FROM [a].[dbo].[at] a WHERE a.at1 = b.bt1 )
    ORDER BY [at1] ASC

 EXEC sp_configure 'Ad Hoc Distributed Queries',
 RECONFIGURE
 EXEC sp_configure 'show advanced options',
 RECONFIGURE