Re: greatest/least semantics different between oracle and postgres

From: Bruce Momjian <bruce(at)momjian(dot)us>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Gregory Stark <stark(at)enterprisedb(dot)com>, Ben <bench(at)silentmedia(dot)com>, "PostgreSQL General ((EN))" <pgsql-general(at)postgresql(dot)org>
Subject: Re: greatest/least semantics different between oracle and postgres
Date: 2007-06-30 16:13:48
Message-ID: 200706301613.l5UGDmx25259@momjian.us
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Tom Lane wrote:
> Bruce Momjian <bruce(at)momjian(dot)us> writes:
> > Tom Lane wrote:
> >> Anyway, there's no doubt that we can point to the behavior of MAX/MIN
> >> as defense for what we made GREATEST/LEAST do, so I'm inclined to leave
> >> their behavior alone, at least until such time as they're actually
> >> standardized. But a note in the manual pointing out the difference from
> >> Oracle seems in order.
>
> > Agreed that we are good by following min/max. Not sure about a mention
> > in the docs that we are different from Oracle helps. Do we mention
> > other differences? I see us doing that only for PL/Psql.
>
> We tend not to mention Oracle by name, but there are various places
> saying that we do X while "some other databases" do Y. In view of the
> mysql behavior I think I'd use that same wording here.

OK, I like the generic approach.

--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://www.enterprisedb.com

+ If your life is a hard drive, Christ can be your backup. +

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