Method _create_except_all

lib/sqlalchemy/sql/selectable.py:4591–4594

(
        cls, *selects: _SelectStatementForCompoundArgument[_TP]
    )

    @classmethod
    def _create_except_all(
        cls, *selects: _SelectStatementForCompoundArgument[_TP]
    ) -> CompoundSelect[_TP]:
        return CompoundSelect(_CompoundSelectKeyword.EXCEPT_ALL, *selects)

    @classmethod
    def _create_intersect(