Re: UUID's as primary keys

On Wed, Jun 28, 2006 at 09:01:49AM +0200, Thomas Hallgren wrote:
> I'm building an app where I have several entities that are identified
> using a UUID (i.e. a 128 bit quantity). My current implementation uses a
> composite primary key consisting of two int8 values. It's a bit
> cumbersome and I would much rather have a distinct type. An earlier
> implementation using Oracle mapped the UUID to a RAW(16) but PostgreSQL
> doesn't have that and the BYTEA adds extra overhead.
>
> What would be the best (as in most efficient) mapping for a 128 bit
> primary key?

Sounds like something for a custom type. There's one here[1] though I
have no idea how good it is.

[1] http://gborg.postgresql.org/project/pguuid/projdisplay.php

Have a nice day,
--
Martijn van Oosterhout <kleptog(at)svana(dot)org> http://svana.org/kleptog/
> From each according to his ability. To each according to his ability to litigate.