Re: NOT LIKE much faster than LIKE?

Поиск
Список
Период
Сортировка
От Andrea Arcangeli
Тема Re: NOT LIKE much faster than LIKE?
Дата
Msg-id 20060111075956.GU15897@opteron.random
обсуждение исходный текст
Ответ на Re: NOT LIKE much faster than LIKE?  (Tom Lane <tgl@sss.pgh.pa.us>)
Список pgsql-performance
On Tue, Jan 10, 2006 at 10:46:53AM -0500, Tom Lane wrote:
> Not with that data, but maybe if you increased the statistics target for
> the column to 100 or so, you'd catch enough values to get reasonable
> results.

Sorry, I'm not expert with postgresql, could you tell me how to increase
the statistic target?

In another email you said you applied a patch to CVS, please let me know
if you've anything to test for me, and I'll gladly test it immediately
(I've a sandbox so it's ok even if it corrupts the db ;).

Thanks!

В списке pgsql-performance по дате отправления:

Предыдущее
От: Michael Fuhr
Дата:
Сообщение: Re: Index isn't used during a join.
Следующее
От: Michael Fuhr
Дата:
Сообщение: Re: Index isn't used during a join.