@testing.requires.parens_in_union_contained_select_w_limit_offset
    def test_limit_offset_in_unions_from_alias(self):
        table = self.tables.some_table
        s1 = select([table]).where(table.c.id == 2).\
            limit(1).order_by(table.c.id)
        s2 = select([table]).where(table.c.id == 3).\
            limit(1).order_by(table.c.id)

        # this necessarily has double parens
        u1 = union(s1, s2).alias()
        self._assert_result(
            u1.select().limit(2).order_by(u1.c.id),
            [(2, 2, 3), (3, 3, 4)]
        )
dataset/ETHPy150Open zzzeek/sqlalchemy/lib/sqlalchemy/testing/suite/test_select.py/CompoundSelectTest.test_limit_offset_in_unions_from_alias/original