def METHOD_NAME(self, request):
    """Avoid using DISTINCT clause when base object filter is not used."""
    filter_specs, filter_specs_exist, lookup_params, use_distinct = \
        super(RalphChangeList, self).METHOD_NAME(request)
    filter_params = self.get_filters_params()
    return (
        filter_specs,
        filter_specs_exist,
        lookup_params,
        use_distinct if filter_params.get('base_objects') else False
    )