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//--Ìí¼Ó·þÎñÆ÷
EXEC sp_addlinkedserver
      @server='LQXLSJ-600A5A60',--±»·ÃÎʵķþÎñÆ÷±ðÃû
      @srvproduct='',
      @provider='SQLOLEDB',
      @datasrc='LQXLSJ-600A5A60'   --Òª·ÃÎʵķþÎñÆ÷
EXEC sp_addlinkedsrvlogin
     'LQXLSJ-600A5A60', --±»·ÃÎʵķþÎñÆ÷±ðÃû
     'false',
     NULL,
     'sa', --ÕʺÅ
     'sa' --ÃÜÂë
//--ɾ³ý·þÎñÆ÷
Exec sp_droplinkedsrvlogin 'LQXLSJ-600A5A60',Null
Exec sp_dropserver 'LQXLSJ-600A5A60'


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¡¡¡¡select * from v$version;
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¡¡¡¡select sum(bytes)/(1024*1024) as free_space,tablespace_name
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select * from tableName where datediff(week,dateField,getdate())=0
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