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Select TableA.*,TableB.* from OPENDATASOURCE(
         'SQLOLEDB',
         'Data Source=ServerA;User ID=UserID;Password=Password'
         ).databaseAName.dbo.TableA
Left Join
 OPENDATASOURCE(
         'SQLOLEDB',
         'Data Source=ServerB;User ID=UserID;Password=Password'
         ).databaseBName.dbo.TableB On TableA.key=TableB.key
ÏÂÃæÊǸö²éѯµÄʾÀý£¬Ëüͨ¹ýÓÃÓÚ Jet µÄ OLE DB Ìṩ³ÌÐò²éѯ Excel µç×Ó±í¸ñ¡£
SELECT *
from OpenDataSource( 'Microsoft.Jet.OLEDB.4.0',
  'Data Source="c:\Finance\account.xls";User ID=Admin;Password=;Extended properties=Excel 5.0')...xactions
·½·¨¶þ(Ò²¿ÉÒÔÔÚÆóÒµ¹ÜÀíÆ÷ÀïÌí¼Ó linkServer):
sp_addlinkedserver
´´½¨Ò»¸öÁ´½ÓµÄ·þÎñÆ÷£¬Ê¹ÆäÔÊÐí¶Ô·Ö²¼Ê½µÄ¡¢Õë¶Ô OLE DB Êý¾ÝÔ´µÄÒìÀà²éѯ½øÐзÃÎÊ¡£ÔÚʹÓà sp_addlinkedserver ´´½¨Á´½ÓµÄ·þÎñÆ÷Ö®ºó£¬´Ë·þÎñÆ÷¾Í¿ÉÒÔÖ´Ðзֲ¼Ê½²éѯ¡£Èç¹ûÁ´½Ó·þÎñÆ÷¶¨ÒåΪ Microsoft? SQL Server?£¬Ôò¿ÉÖ´ÐÐÔ¶³Ì´æ´¢¹ý³Ì¡£
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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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¼òµ¥Ê¾Àý:
//´´½¨linkServer
exec sp_addlinkedserver 'srv_lnk','','SQLOLEDB','·þÎñÆ÷Ãû'
//怫linkServer
exec sp_addlinkedsrvlogin 'srv_lnk','false',null,'Óû§Ãû','ÃÜÂë'
//²éѯlinkServerµÄÊý¾Ý¿âDataBaseAµÄ±íTableA
Select * from srv_lnk.DataBaseA.dbo.TableA
//List the tables in the


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