Re: Limit clause not using index

From: Bricklen Anderson <BAnderson(at)PresiNET(dot)com>
To: Yves Vindevogel <yves(dot)vindevogel(at)implements(dot)be>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: Limit clause not using index
Date: 2005-06-21 14:40:34
Message-ID: 42B826E2.5080802@PresiNET.com
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-performance

Yves Vindevogel wrote:
> Hi,
>
> rvponp=# explain select * from tblprintjobs order by loginuser,
> desceventdate, desceventtime offset 25 limit 25 ;
>
> I have a very simple query on a big table. When I issue a "limit"
> and/or "offset" clause, the query is not using the index.
> Can anyone explain me this ?

Do you have an index on (loginuser,desceventdate,desceventtime)?

--
_______________________________

This e-mail may be privileged and/or confidential, and the sender does
not waive any related rights and obligations. Any distribution, use or
copying of this e-mail or the information it contains by other than an
intended recipient is unauthorized. If you received this e-mail in
error, please advise me (by return e-mail or otherwise) immediately.
_______________________________

In response to

Browse pgsql-performance by date

  From Date Subject
Next Message John A Meinel 2005-06-21 14:42:36 Re: Limit clause not using index
Previous Message Yves Vindevogel 2005-06-21 14:33:55 Limit clause not using index