Re: Aggregate versions of hashing functions (md5, sha1, etc...)

From: Ron Johnson <ronljohnsonjr(at)gmail(dot)com>
To: pgsql-general <pgsql-general(at)postgresql(dot)org>
Subject: Re: Aggregate versions of hashing functions (md5, sha1, etc...)
Date: 2025-07-10 17:11:32
Message-ID: CANzqJaAWF7hr0OjMHBDpsO6O-AtPLu1RwopBEVYqgBT=Rmwrbg@mail.gmail.com
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On Thu, Jul 10, 2025 at 12:26 PM Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com>
wrote:

> On 7/10/25 04:48, Dominique Devienne wrote:
>
> > Seems so logical to me, that these hashing functions were available
> > are aggregates, I can't be the first one to think of that, can it?
> >
>
> I've been on this list since late 2002 and I don't recall this ever
> being brought up. Now it is entirely possible that age has dimmed my
> recall abilities:) Though a quick search seems to confirm my memory.
>

What even is an aggregate hash function? (I can imagine a few
possibilities, but don't want to assume.)

--
Death to <Redacted>, and butter sauce.
Don't boil me, I'm still alive.
<Redacted> lobster!

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