try {
  String query = new String (
    " SELECT StoreNumber, (Sales-Estimate) " +
    " FROM Sales " + 
    " ORDER BY 2 "); 
  DataRequest = Database.createStatement();
  Results = DataRequest.executeQuery (query);
  System.out.println("Store  Sales");
  System.out.println("-----  -----");
  DisplayResults (Results);
  DataRequest.close();
}