From: | Ants Aasma <ants(dot)aasma(at)eesti(dot)ee> |
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To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, Greg Stark <stark(at)mit(dot)edu>, David Rowley <dgrowleyml(at)gmail(dot)com>, Josh Berkus <josh(at)agliodbs(dot)com> |
Subject: | Re: [PATCH] Negative Transition Aggregate Functions (WIP) |
Date: | 2013-12-15 17:00:18 |
Message-ID: | CA+CSw_vxkNeeJyDNRFCj1UFUkKPEj2vHw5ZpTYHOqGStnHN6YQ@mail.gmail.com |
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Lists: | pgsql-hackers |
On Dec 15, 2013 6:44 PM, "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> David Rowley <dgrowleyml(at)gmail(dot)com> writes:
> > I've attached an updated patch which includes some documentation.
> > I've also added support for negfunc in CREATE AGGREGATE. Hopefully
that's
> > an ok name for the option, but if anyone has any better ideas please let
> > them be known.
>
> I'd be a bit inclined to build the terminology around "reverse" instead of
> "negative" --- the latter seems a bit too arithmetic-centric. But that's
> just MHO.
To contribute to the bike shedding, inverse is often used in similar
contexts.
--
Ants Aasma
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