Method _check_operator_queryset

django/db/models/query.py:2319–2321

(self, other, operator_)

            )

    def _check_operator_queryset(self, other, operator_):
        if self.query.combinator or other.query.combinator:
            raise TypeError(f"Cannot use {operator_} operator with combined queryset.")

    def _check_ordering_first_last_queryset_aggregation(self, method):
        if (