Re: [SQL] "SELECT IN" Still Broken in 7.4b

Поиск
Список
Период
Сортировка
Искать
От
Joe Conway
Тема
Re: [SQL] "SELECT IN" Still Broken in 7.4b
Дата
Msg-id
3F45414A.6030301@joeconway.com
Ответ на
Список
Дерево обсуждения
Re: [SQL] "SELECT IN" Still Broken in 7.4b "Christopher Kings-Lynne" <chriskl@familyhealth.com.au>
Tom Lane wrote:
> I'm toying with the notion of ripping out that logic and instead
> building an in-memory hashtable of already-returned TIDs.  This could
> theoretically run out of memory if the multiple indexscan returns enough
> tuples, but I think in practice that wouldn't happen because the planner
> wouldn't choose an indexscan when very large numbers of tuples are being
> selected.

I thought with your recent changes, you could use dynahash, which 
already spills to disk instead of consuming all memory?

Joe


В списке pgsql-hackers по дате отправления
От: Tom Lane
Дата:
От: Tom Lane
Дата:
FAQ