pg.ddx.io pgsql-performance@postgresql.org mailing list archivehelp / color / mirror / Atom feed
From: Thomas Kellerer <spam_eater@gmx.net>
To: pgsql-performance@postgresql.org
Subject: Re: Query Performance question
Date: Mon, 14 Jul 2014 09:07:10 +0200
Message-ID: <lpvviu$en3$1@ger.gmane.org> (raw)
In-Reply-To: <1405304448354.64039@turner.com>
References: <1405292142269.59034@turner.com>
<53C32B20.8010100@fuzzy.cz>
<1405304448354.64039@turner.com>
List-Unsubscribe: <mailto:majordomo@postgresql.org?body=unsub%20pgsql-performance>
Magers, James, 14.07.2014 04:20:
> Thank you for your feedback. I am attaching the requested information.
> While I do not think the query is necessarily inefficient, I believe a sequence scan would be more efficient.
You can try
set enable_indexscan = off;
set enable_bitmapscan = off;
and then run your query.
But I would be very surprised if a seq scan (which reads through the whole table) was faster than those 4ms you have now
--
Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-performance
view thread (21+ messages) latest in thread
Message-ID: <lpvviu$en3$1@ger.gmane.org> Permalink: ../lpvviu$en3$1@ger.gmane.org/ Also on: postgresql.org/message-id/lpvviu$en3$1@ger.gmane.org ·
reply
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Reply to all the recipients using the --to and --cc options: reply via email To: pgsql-performance@postgresql.org Cc: spam_eater@gmx.net Subject: Re: Query Performance question In-Reply-To: <lpvviu$en3$1@ger.gmane.org> * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions for how to clone and mirror all data and code used for this inbox