Re: Slow response in select

Поиск
Список
Период
Сортировка
От Gary Stainburn
Тема Re: Slow response in select
Дата
Msg-id 201009211535.24925.gary.stainburn@ringways.co.uk
обсуждение исходный текст
Ответ на Re: Slow response in select  (Gary Stainburn <gary.stainburn@ringways.co.uk>)
Список pgsql-sql
On Tuesday 21 September 2010 15:20:15 Gary Stainburn wrote:
>
> I've posted th explain analyze at
>
> http://www1.ringways.co.uk/explain_analyse.txt
>
> I've marked a line with a sort in that appears to be the bit that's taking
> the time.  Am I right?
>

I've had a look at this, and I can't even see why the sort is happeing. There 
are no order by clauses and only one group by clause in the sub-select. This 
group by only works on a very small dataset though.


-- 
Gary Stainburn
This email does not contain private or confidential material as it
may be snooped on by interested government parties for unknown
and undisclosed purposes - Regulation of Investigatory Powers Act, 2000     


В списке pgsql-sql по дате отправления:

Предыдущее
От: Gary Stainburn
Дата:
Сообщение: Re: Slow response in select
Следующее
От: Michele Petrazzo - Unipex
Дата:
Сообщение: Re: all the table values equal