create table test(x0 int, x1 int);

select * from
    (select * from
        (select * from
            (select * from
                (select * from
                    (select * from
                        (select * from
                            (select * from
                                (select * from test as t399 where x0<1 and x0>=x0 or null<=-1) as t398
                            where -1 is not distinct from -1) as t397
                        where 3 is distinct from 2) as t396
                    where null is distinct from -1) as t395
                where 3 is distinct from -1 or null=x1) as t394
            where x0 is distinct from null) as t393
        where x0>=null and -1<=1 and 3 is not distinct from -1) as t392
    where -1>=3) as t391
where -1 is distinct from -1 or 2 is distinct from x0;