Method _create_union

lib/sqlalchemy/sql/selectable.py:4695–4698

(
        cls, *selects: _SelectStatementForCompoundArgument[Unpack[_Ts]]
    )

    @classmethod
    def _create_union(
        cls, *selects: _SelectStatementForCompoundArgument[Unpack[_Ts]]
    ) -> CompoundSelect[Unpack[_Ts]]:
        return CompoundSelect(_CompoundSelectKeyword.UNION, *selects)

    @classmethod
    def _create_union_all(