When adding a reference to a Table in a map document, you can not have the object represented more than once. If you apply a definition query to filter the table, you then can not add the same table yet have a different query applied. Also, although you can sort the values in a particular column, we do not have the ability to report the distincts and the count of the distincts either. This functionality is available in a layer file and would be useful on the table side as well.