From: Tom Lane <tgl@sss.pgh.pa.us>
To: pg noob <pgnube@gmail.com>
Cc: pgsql-performance <pgsql-performance@postgresql.org>
Subject: Re: query plan estimate
Date: Sun, 31 Mar 2013 20:52:59 -0400
Message-ID: <24671.1364777579@sss.pgh.pa.us> (raw)
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pg noob <pgnube@gmail.com> writes:
> I'm looking at this query plan, an excerpt of which is shown here, and I am
> just wondering how the estimated cost for the Nested Loop is calculated?
http://www.postgresql.org/docs/9.2/static/using-explain.html
There's a nestloop example about a third of the way down the page ...
regards, tom lane
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To: pgsql-performance@postgresql.org
Cc: tgl@sss.pgh.pa.us, pgnube@gmail.com
Subject: Re: query plan estimate
In-Reply-To: <24671.1364777579@sss.pgh.pa.us>
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