Method using_db

tortoise/queryset.py:1066–1073

Executes query in provided db client. Useful for transactions workaround.

(self, _db: BaseDBAsyncClient | None)

        )

    def using_db(self, _db: BaseDBAsyncClient | None) -> QuerySet[MODEL]:
        """
        Executes query in provided db client.
        Useful for transactions workaround.
        """
        queryset = self._clone()
        queryset._db = _db if _db else queryset._db
        return queryset

    def _join_select_related(self, lookup_expression: str) -> tuple[type[Model], Table]:
        fields = expand_lookup_expression(self.model, lookup_expression)