ODBC через DAO

CDaoDatabase MyDb = new CDaoDatabase();

 m_DaoServerDB.Open(NULL,FALSE,FALSE,
 "ODBC;DSN=SAMS_SVR;UID=admin;PWD=admin");

 CDaoRecordset MySet = new CDaoRecordset(MyDb);
 MySet->Open(AFX_DAO_USE_DEFAULT_TYPE,
 "SELECT * FROM some_table");

 VARIANT *vFieldValue;
 COleVariant covFieldValue;
 CString Holder;

 while(!MySet->IsEOF())
 {
 MySet->GetFieldValue("FIELD_1", covFieldValue);
 vFieldValue = (LPVARIANT)covFieldValue;
 
 if(vFieldValue->vt!-VT_NULL)
 {
 Holder.Format("%s",vFieldValue->pbVal);
 m_List.AddString(Holder);
 }
 
 MySet.MoveNext();
 }