am Fri, dem 15.09.2006, um 10:06:40 +0200 mailte Andreas Joseph Krogh folgendes: > I have the following query: > > select lower(firstname) || ' ' || lower(lastname) from person > > firstname and lastname are VARCHAR > > lower() returns NULL when firstname OR lastname is NULL, is this correct?
Yes. You can user coalesce for this: select coalesce(lower(firstname),'') || ... HTH, Andreas -- Andreas Kretschmer Kontakt: Heynitz: 035242/47215, D1: 0160/7141639 (mehr: -> Header) GnuPG-ID: 0x3FFF606C, privat 0x7F4584DA http://wwwkeys.de.pgp.net ---------------------------(end of broadcast)--------------------------- TIP 6: explain analyze is your friend
