| From: | Thomas Hallgren <thomas(at)tada(dot)se> |
|---|---|
| To: | Psql_General <pgsql-general(at)postgresql(dot)org> |
| Subject: | UUID's as primary keys |
| Date: | 2006-06-28 07:01:49 |
| Message-ID: | 44A2295D.7000709@tada.se |
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| Lists: | pgsql-general pgsql-hackers |
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?
Regards,
Thomas Hallgren
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