Method set_empty

django/db/models/sql/query.py:2181–2184

(self)

        return condition, needed_inner

    def set_empty(self):
        self.where.add(NothingNode(), AND)
        for query in self.combined_queries:
            query.set_empty()

    def is_empty(self):
        return any(isinstance(c, NothingNode) for c in self.where.children)