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UUID column as pimrary key?

From: Dennis Gearon <gearond(at)sbcglobal(dot)net>
To: pgsql-general(at)postgresql(dot)org
Subject: UUID column as pimrary key?
Date: 2011-01-04 19:07:00
Message-ID: (view raw or whole thread)
Lists: pgsql-general
I haven't been able to find anywhere, easily, in the documentation using google 
where a list of allowed data types for primary keys is.

So, UUIDs can be primary keys?
Any issues wtih them on sorting or paging of index tables, etc.?

Also, the documentation says that UUIDs are 128 bit value, but never explicitly 
says that's how it's stored. Nor does it use one of the nice, blue headered 
tables for UUID (or ENUM) showing storage and other attributes as it does for 
numeric, character,boolean, date/time, binary, monetary, geometric, or network 

 Dennis Gearon

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