Method clear_ordering

django/db/models/sql/query.py:2390–2409

Remove any ordering settings if the current query allows it without side effects, set 'force' to True to clear the ordering regardless. If 'clear_default' is True, there will be no ordering in the resulting query (not even the model's default).

(self, force=False, clear_default=True)

        return order_by_set.issubset(self.group_by)

    def clear_ordering(self, force=False, clear_default=True):
        """
        Remove any ordering settings if the current query allows it without
        side effects, set 'force' to True to clear the ordering regardless.
        If 'clear_default' is True, there will be no ordering in the resulting
        query (not even the model's default).
        """
        if not force and (
            self.is_sliced or self.distinct_fields or self.select_for_update
        ):
            return
        self.order_by = ()
        self.extra_order_by = ()
        if clear_default:
            self.default_ordering = False
        # Ordering is cleared on combined queries with clear_default=False
        # when union() and analogues are called, so percolate any possible
        # clear_default=True.
        for query in self.combined_queries:
            query.clear_ordering(force=False, clear_default=clear_default)

    def set_group_by(self, allow_aliases=True):
        """