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From: Bruno Wolff III <bruno@wolff.to>
To: soni de <soni.de@gmail.com>
Cc: Merlin Moncure <mmoncure@gmail.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Takes too long to fetch the data from database
Date: Thu, 20 Apr 2006 01:30:14 -0500
Message-ID: <20060420063014.GA25438@wolff.to> (raw)
In-Reply-To: <9f2e40a90604192237i5d3e8f0dl1c8b19887bc34e22@mail.gmail.com>
References: <9f2e40a90604100021n1cb694d0lb95f318f800f33ee@mail.gmail.com>
	<b42b73150604100845w553dcee6kde20e4b82770aab0@mail.gmail.com>
	<9f2e40a90604110004u787716c2s22bdf53fe349326@mail.gmail.com>
	<b42b73150604110613h2c63ea61oec8035c8e2f4ed98@mail.gmail.com>
	<9f2e40a90604192237i5d3e8f0dl1c8b19887bc34e22@mail.gmail.com>

On Thu, Apr 20, 2006 at 11:07:31 +0530,
  soni de <soni.de@gmail.com> wrote:
> Please provide me some help regarding how could I use cursor in following
> cases? :
> 
> I want to fetch 50 records at a time starting from largest stime.
> 
> SELECT * FROM wan ORDER BY stime LIMIT 50 OFFSET 81900;

Something like the following may be faster:
SELECT * FROM wan ORDER BY stime DESC LIMIT 50;

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