Re: MERGE vs REPLACE

From: Jaime Casanova <systemguards(at)gmail(dot)com>
To: Peter Eisentraut <peter_e(at)gmx(dot)net>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: MERGE vs REPLACE
Date: 2005-11-11 20:19:32
Message-ID: c2d9e70e0511111219o7911c2dl4f3c3a7dcb6e9d06@mail.gmail.com
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On 11/11/05, Peter Eisentraut <peter_e(at)gmx(dot)net> wrote:
> It seems to me that it has always been implicitly assumed around here
> that the MERGE command would be a substitute for a MySQL-like REPLACE
> functionality. After rereading the spec it seems that this is not the
> case. MERGE always operates on two different tables, which REPLACE
> doesn't do.
>
> That said, what kind of support for insert-or-update-this-row do we want
> to provide, if any? Should it be a REPLACE command, an extension of
> the INSERT command, a modication of the MERGE syntax, or something
> else?
>
> --
> Peter Eisentraut
> http://developer.postgresql.org/~petere/
>

MERGE seems to me the better option... not just because is standard
but at least i can see some use cases for it...

--
regards,
Jaime Casanova
(DBA: DataBase Aniquilator ;)

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