Please see my comments in line. > -----Original Message----- > From: pgsql-admin-owner@xxxxxxxxxxxxxx [mailto:pgsql-admin- > owner@xxxxxxxxxxxxxx] On Behalf Of Milen A. Radev > Sent: Monday, June 02, 2008 6:24 PM > To: pgsql-admin@xxxxxxxxxxxxxx > Subject: Re: [ADMIN] UUID generation functions > > Milen A. Radev написа: > > John DeSoi написа: > >> > >> On Jun 2, 2008, at 3:19 PM, Kevin Grittner wrote: > >> > >>> Any chance of going to 8.3? > >>> > >>> http://www.postgresql.org/docs/8.3/interactive/datatype-uuid.html > >> > >> But 8.3 still does not generate UUIDs, only stores/compares them. From > >> the link above: > >> > >>> PostgreSQL provides storage and comparison functions for UUIDs, but > >>> the core database does not include any function for generating UUIDs, > >>> because no single algorithm is well suited for every application. As far as I can see, there are really only 2 types, either time-based or random. I guess a third "type" could be one where 2 long integers are used to "generate" the UUID. Would this really add that much code? I haven't yet implemented such algorithms to know - I've simply used the underlying systems services when I needed UUIDs. > >> > >> For reasons mentioned by the other poster, it would be helpful if > >> PostgreSQL could generate them. Is there really more than 2 or 3 > >> needed options where it would be huge code bloat to include sufficient > >> alternatives? > > > > http://www.postgresql.org/docs/8.3/static/uuid-ossp.html > > My bad - just realised the OP most probably needs a Windows-compatible > solution and uuid-ossp is not. > Actually, I'm developing on Windows, but deploying on Linux (both the web-server and the DB server), so a solution that is independent of platform is the most desirable. I was hoping that PG would have something to generate UUIDs internally. If PG doesn't have the ability to generate UUIDs, I'll put the code in the web-server (tomcat) to do so. I was hoping to have this functionality as close as possible to the persistence of the data (where rules of uniqueness and integrity can be more easily enforced). Gord > > -- > Milen A. Radev > > > -- > Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-admin
