| From: | Scott Ribe <scott_ribe(at)elevated-dev(dot)com> |
|---|---|
| To: | Mike Christensen <mike(at)kitchenpc(dot)com> |
| Cc: | Grzegorz Jaśkiewicz <gryzman(at)gmail(dot)com>, Radosław Smogura <rsmogura(at)softperience(dot)eu>, PostgreSQL general <pgsql-general(at)postgresql(dot)org> |
| Subject: | Re: UUID column as pimrary key? |
| Date: | 2011-01-05 15:06:16 |
| Message-ID: | ED5F8B5E-969D-427C-80A0-FD7ED7598E93@elevated-dev.com |
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| Thread: | |
| Lists: | pgsql-general |
On Jan 5, 2011, at 8:03 AM, Mike Christensen wrote:
> As long as all your UUIDs are generated with the same algorithm, they
> are guaranteed to be unique.
There is no requirement that they be generated with the same algorithm in order to be unique. A MAC/time-based UUID cannot duplicate a random one, and vice versa. (Also applies to the 3rd flavor of UUID whose details I do not remember.)
--
Scott Ribe
scott_ribe(at)elevated-dev(dot)com
http://www.elevated-dev.com/
(303) 722-0567 voice
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