CString strConn = _T("Provider='sqloledb';Data  Source=xxx.xxx.xxx.xxx;Initial Catalog=xxxx;User ID=xx");
 
  
  
 CString strSQLFunction = _T("SELECT * FROM  [af_xxx] ()");
  
  try
 {
  
       ADODB::_RecordsetPtr pRecordSet = 0;
       pRecordSet.CreateInstance(_T("ADODB.RecordSet"));
       ASSERT(pRecordSet);
       pRecordSet->Open(_bstr_t(strSQLFunction),_bstr_t(strConn),ADODB::adOpenForwardOnly,ADODB::adLockReadOnly,ADODB::adCmdText);
       pRecordSet->MoveFirst();
      while  (!pRecordSet->adoEOF)
       {
           _bstr_t bstrHashSet  =  pRecordSet->Fields->Item["colName"]->Value;
            pRecordSet->MoveNext();
       }
       pRecordSet->Close();
      //pRecordSet->Release();//会自动释放,不用显示调用释放过程
  
  }
 catch(_com_error  &e)
 {
       AfxMessageBox(e.Description());
  }