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

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От Martijn van Oosterhout
Тема Re: UUID/GUID discussion leading to request for hexstring bytea?
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Msg-id 20060907124636.GM10093@svana.org
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Ответ на Re: UUID/GUID discussion leading to request for hexstring bytea?  (Gevik Babakhani <pgdev@xs4all.nl>)
Ответы Re: UUID/GUID discussion leading to request for  (Gevik Babakhani <pgdev@xs4all.nl>)
Список pgsql-hackers
On Thu, Sep 07, 2006 at 01:27:21PM +0200, Gevik Babakhani wrote:
> To my opinion only some of relational/compare operations like == and !=
> apply to such values. comparing guid >= guid or md5 < md5 is also
> meaningless.

<snip>

> 4. GUID type must have the ability to be indexed, grouped, ordered,
> DISTINCT... but not MAX(), MIN() or SUM()....

Err, for "ordered" you need to define <, >, >=, <=, which means you're
going to get MAX, and MIN for free...

> I also think we should have the GUID/UUID as a datatype and not just
> functions handling hexstring.

Sure, but that will be the I/O format, right?

Have a nice day,

--
Martijn van Oosterhout   <kleptog@svana.org>   http://svana.org/kleptog/
> From each according to his ability. To each according to his ability to litigate.

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