On Thu, Apr 10, 2008 at 4:36 PM, Osvaldo Rosario Kussama <osvaldo.kussama@xxxxxxxxx> wrote: > > Try: > > SELECT count(*) AS frequency, score, > count((SELECT * FROM scoretable st2 WHERE st2.score <= st1.score)) AS > runningtotal > FROM scoretable st1 > GROUP BY score > ORDER BY score > > Osvaldo > Thankyou Osvaldo- that worked! Final version: SELECT count(*) AS frequency, score, ((((SELECT count(uid) FROM scoretable st2 WHERE st2.score <= st1.score) - count(*)) + (count(*)/2))::float/(select count(*) from scoretable)) FROM scoretable st1 GROUP BY score ORDER BY score I think that's a percentile rank now. Cheers Will
