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insert into Instance01.DB01.dbo.Table01
          select * from Instance02.DB01.dbo.Table01
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sp_addlinkedserver [ @server= ] 'server' [ , [ @srvproduct= ] 'product_name' ]     
      [ , [ @provider= ] 'provider_name' ]     
      [ , [ @datasrc= ] 'data_source' ]
      [ , [ @location= ] 'location' ]
      [ , [ @provstr= ] 'provider_string' ]
      [ , [ @catalog= ] 'catalog' ]
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EXEC sp_addlinkedserver ‘Instance02’ //ֻдµÚÒ»¸ö²ÎÊý¼´¿É£¬Ä¬ÈÏÇé¿öÏ£¬×¢²áµÄÊÇSQL ServerÊý¾Ý¿â£¬ÆäËû²ÎÊýÓ÷¨Ïê¼ûMSDN¡£
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EXEC sp_addlinkedsrvlogin 'InstanceName','true'  //ʹÓü¯³ÉÈÏÖ¤·ÃÎÊÔ¶³ÌʵÀý
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