On Thu, Aug 20, 2009 at 10:36:37AM +0300, Sim Zacks wrote: > In other words, I have a conversion table of all different units. If > there is no conversion between 2 units (such as volume and area) then > the sum returns null. Shouldn't that return NULL IOW unknown ? Karsten -- GPG key ID E4071346 @ wwwkeys.pgp.net E167 67FD A291 2BEA 73BD 4537 78B9 A9F9 E407 1346 -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
