>>> Havasvölgyi Ottó <havasvolgyi.otto@xxxxxxxxx> wrote: > WHERE (id1>12 or id1=12 and id2>=34) > and (id1<56 or id1=56 and id2<=78) As others have pointed out, if you are using 8.2 or later, you should write this as: WHERE (id1, id2) >= (12, 34) and (id1, id2) <= (56, 78) On earlier versions you might want to try the logically equivalent: WHERE (id1 >= 12 and (id1 > 12 or id2 >= 34)) and (id1 <= 56 and (id1 < 56 or id2 <= 78)) -Kevin -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance