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Re: [RFC] new digest datatypes, or generic fixed-len hex types?

From: Merlin Moncure <mmoncure(at)gmail(dot)com>
To: Peter Eisentraut <peter_e(at)gmx(dot)net>
Cc: pgsql-hackers(at)postgresql(dot)org, Alvaro Herrera <alvherre(at)commandprompt(dot)com>
Subject: Re: [RFC] new digest datatypes, or generic fixed-len hex types?
Date: 2009-07-28 14:34:36
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Lists: pgsql-hackers
On Tue, Jul 28, 2009 at 7:15 AM, Peter Eisentraut<peter_e(at)gmx(dot)net> wrote:
> On Monday 27 July 2009 14:50:30 Alvaro Herrera wrote:
>> We've developed some code to implement fixed-length datatypes for well
>> known digest function output (MD5, SHA1 and the various SHA2 types).
>> These types have minimal overhead and are quite complete, including
>> btree and hash opclasses.
> I think equipping bytea with a length restriction would be a very natural,
> simple, and useful addition.  If we ever want to move the bytea type closer to
> the SQL standard blob type, this will need to happen anyway.



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