Re: Limit clause not using index

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От Bricklen Anderson
Тема Re: Limit clause not using index
Дата
Msg-id 42B826E2.5080802@PresiNET.com
обсуждение исходный текст
Ответ на Limit clause not using index  (Yves Vindevogel <yves.vindevogel@implements.be>)
Список 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)?

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