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.
pgsql-hackers by date:
Соглашаюсь с условиями обработки персональных данных