Re: Obtaining a limited number of records from a long query

From: Daniel Staal <DStaal(at)usa(dot)net>
To: pgsql-novice(at)postgresql(dot)org
Subject: Re: Obtaining a limited number of records from a long query
Date: 2009-05-25 14:15:50
Message-ID: B887F754A90503A330C4F680@Mac-Pro.magehandbook.com
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--As of May 25, 2009 2:32:14 PM +0100, Oliveiros Cristina is alleged to
have said:

> Is there any way to force a query to return just a few records?
>
> For ex, returning just the first ten rows from a long ORDER BY query ?
>
> And then, eventually, obtaining the remaining records at a later time, or
> in background?
>
> Thanks in advance for your help,

--As for the rest, it is mine.

Depending on what you want, either LIMIT and OFFSET or a cursor will help
you.

<http://www.postgresql.org/docs/8.3/interactive/queries-limit.html>
<http://www.postgresql.org/docs/8.3/interactive/sql-declare.html>

Daniel T. Staal

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