Re: no index-usage on aggregate-functions?

Поиск
Список
Период
Сортировка
От Bruno Wolff III
Тема Re: no index-usage on aggregate-functions?
Дата
Msg-id 20040629134406.GC28041@wolff.to
обсуждение исходный текст
Ответ на Re: no index-usage on aggregate-functions?  ("Harald Lau (Sector-X)" <harald@sector-x.de>)
Список pgsql-performance
On Tue, Jun 29, 2004 at 10:46:27 +0200,
  "Harald Lau (Sector-X)" <harald@sector-x.de> wrote:
>
> hmmmm...
> So, it seems that PG is not soooo well suited for a datawarehouse and/or performing extensive
statistics/calculations/reportingson large tables, is it? 

If you are doing lots of selects of aggregates relative to the number of
updates, you can cache the values of interest in derived tables and use
triggers to keep those tables up to date.

В списке pgsql-performance по дате отправления:

Предыдущее
От: Bruno Wolff III
Дата:
Сообщение: Re: postgres 7.4 at 100%
Следующее
От: Tom Lane
Дата:
Сообщение: Re: postgres 7.4 at 100%