From: Tom Lane <tgl@sss.pgh.pa.us>
To: Mikhail V. Puzanov <misha.puzanov@gmail.com>
Cc: pgsql-sql@postgresql.org
Subject: Re: atomic multi-threaded upsert
Date: Wed, 24 Nov 2010 16:21:10 -0500
Message-ID: <21822.1290633670@sss.pgh.pa.us> (raw)
In-Reply-To: <4CED72BB.3070905@gmail.com>
References: <4CED72BB.3070905@gmail.com>
"Mikhail V. Puzanov" <misha.puzanov@gmail.com> writes:
> -- increment and get the counter if exists
> UPDATE sequences SET counter = counter + 1
> WHERE section = 'testSection' AND name = 'testKey'
> RETURNING counter;
Seems that what you have here is a bad manual implementation of a
sequence. Why don't you use a real sequence object and nextval()?
regards, tom lane
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To: pgsql-sql@postgresql.org
Cc: tgl@sss.pgh.pa.us, misha.puzanov@gmail.com
Subject: Re: atomic multi-threaded upsert
In-Reply-To: <21822.1290633670@sss.pgh.pa.us>
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