In response to Sam Mason :
> On Mon, Jul 27, 2009 at 10:51:00PM -0700, Nick wrote:
> > Is it possible to join two tables by the nearest date? For example how
> > could I find out where the user was on their birthday?
>
> DISTINCT ON[1] is normally the easiest way:
>
> SELECT DISTINCT ON (u.id) u.id, l.id, l.created
> FROM users u, users_locations l
> WHERE u.id = l.user_id
> AND u.birthday <= l.created
AND u.birthday >= l.created
Regards, Andreas
--
Andreas Kretschmer
Kontakt: Heynitz: 035242/47150, D1: 0160/7141639 (mehr: -> Header)
GnuPG-ID: 0x3FFF606C, privat 0x7F4584DA http://wwwkeys.de.pgp.net
