Re: UUID/GUID discussion leading to request for hexstring bytea?

From: Gevik Babakhani <pgdev(at)xs4all(dot)nl>
To: Thomas Hallgren <thomas(at)tada(dot)se>
Cc: pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: UUID/GUID discussion leading to request for hexstring bytea?
Date: 2006-09-18 08:46:00
Message-ID: 1158569160.19958.18.camel@voyager.truesoftware.net
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LIKE could come handy if someone wants to abuse the uuid datatype to
store MD5 hash values. However I am not going to implement it if there
is no need for that (assuming it will pass the acceptance test)

On Mon, 2006-09-18 at 10:06 +0200, Thomas Hallgren wrote:
> Gevik Babakhani wrote:
> > To my opinion GUIDs type need to provide the following in the database.
> >
> > 1. GUID type must accept the correct string format(s), with of without
> > extra '-'
> > 2. GUID type must internally be stored as small as possible.
> > 3. GUID type must be comparable with == , != , LIKE and (NOT) IS NULL
> > 4. GUID type must have the ability to be indexed, grouped, ordered,
> > DISTINCT... but not MAX(), MIN() or SUM()....
> >
> Where do you see a need for LIKE on a GUID?
>
> Regards,
> Thomas Hallgren
>
>

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