Returns a select clause based on the given filter args

def _select_query(self):
        """
        Returns a select clause based on the given filter args
        """
        if self._where:
            self._validate_select_where()
        return SelectStatement(
            self.column_family_name,
            fields=self._select_fields(),
            where=self._where,
            order_by=self._order,
            limit=self._limit,
            allow_filtering=self._allow_filtering
        )