Re: FETCH FIRST clause PERCENT option

To give you a (admittedly, somewhat contrived and artificial example):

    SELECT * FROM t1 WHERE id IN (
      SELECT id FROM t2 ORDER BY x FETCH FIRST 10 PERCENT ROWS ONLY
    );

Maybe this example is bogus and/or does not really matter in practice. I
don't know, but I've been unable to convince myself that's the case.