am Tue, dem 13.02.2007, um 13:56:15 -0800 mailte vanessa folgendes: > > hi guys, > i was just wondering if it was at all possible to turn a year and a given > week number into a real date just using postgresql commands? > > > e.g. if i have year = 2004 and week = 1, > can i turn that into say 2004-01-01 (so that the specified > date is the one for the beginning of week 1 in the year 2004 You can extract the week from a given date with this: SELECT EXTRACT(WEEK FROM '2006-01-01'::date); Be careful, the 1.1. can be in the 52. week in the last year. If you know the first day in the year in week 1, then you can add 7* the given week-1 days to this date. Andreas -- Andreas Kretschmer Kontakt: Heynitz: 035242/47150, D1: 0160/7141639 (mehr: -> Header) GnuPG-ID: 0x3FFF606C, privat 0x7F4584DA http://wwwkeys.de.pgp.net
