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