Re: Index oddity

Поиск
Список
Период
Сортировка
От Rod Taylor
Тема Re: Index oddity
Дата
Msg-id 1086833876.2539.156.camel@jester
обсуждение исходный текст
Ответ на Re: Index oddity  (Christopher Kings-Lynne <chriskl@familyhealth.com.au>)
Ответы Re: Index oddity  (Mark Kirkwood <markir@coretech.co.nz>)
Список pgsql-performance
On Wed, 2004-06-09 at 21:45, Christopher Kings-Lynne wrote:
> > If I take away the diagonalSize condition in my query I find that there
> > are 225 rows that satisfy the other conditions.  155 of these have a

> Maybe you should drop your random_page_cost to something less than 4,
> eg. 3 or even 2...

The big problem is a very poor estimate (off by a couple orders of
magnitude). I was hoping someone with more knowledge in fixing those
would jump in.



В списке pgsql-performance по дате отправления:

Предыдущее
От: Christopher Kings-Lynne
Дата:
Сообщение: Re: Index oddity
Следующее
От: Mark Kirkwood
Дата:
Сообщение: Re: Index oddity