On Sat, Jun 04, 2011 at 11:45:08AM +0000, Jasen Betts wrote: > On 2011-06-03, lists-pg...@useunix.net <lists-pg...@useunix.net> wrote: > > > > ID TS (HH:MM) > > ------------------- > > 0 20:00 > > 0 20:05 > > 0 20:10 > > 1 20:03 > > 1 20:09 > > > > > > Does my question make sense? > > no, why is (1,20:04) excluded, but (0,20:05) included? > both records are 5 minutes from the newest.
Jasen, (1,20:04) is excluded because it's timestamp is less than 5 minutes from the previous record with the same ID (1,20:03), (0,20:05) is included for the opposite reason. Let me restate my requirement again with a little more detail. I want to select records grouped by ID, ordered by timestamp, in ascending order so I'm starting with the oldest, that are at least X minutes apart. I hope that helps. Thanks again, Wayne -- Sent via pgsql-sql mailing list (pgsql-sql@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-sql
