Kashmir wrote: > > thx for anwering!, > > i was more looking for a percentile calculation as in > http://en.wikipedia.org/wiki/Percentile > usually i do this in perl with the 'Statistics::Descriptive' module, > but it would help me alot if i could solve this within the sql query, > and would not have to push all the data into a perl arrays first..
Have you considered writing a function in the PL/R language? It has percentiles (actually quantiles) and all sorts of useful math stuff. See http://www.joeconway.com/plr/ -- Alvaro Herrera http://www.CommandPrompt.com/ PostgreSQL Replication, Consulting, Custom Development, 24x7 support -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
