Re: [HACKERS] path toward faster partition pruning

Поиск
Список
Период
Сортировка
От Andres Freund
Тема Re: [HACKERS] path toward faster partition pruning
Дата
Msg-id 20180407034622.2zjrjnckhqw5lnb6@alap3.anarazel.de
обсуждение исходный текст
Ответ на Re: [HACKERS] path toward faster partition pruning  (Tom Lane <tgl@sss.pgh.pa.us>)
Список pgsql-hackers
Hi,

On 2018-04-06 23:41:22 -0400, Tom Lane wrote:
> David Rowley <david.rowley@2ndquadrant.com> writes:
> > Sounds like you're saying that if we have too many alternative files
> > then there's a chance that one could pass by luck.
> 
> Yeah, exactly: it passed, but did it pass for the right reason?
> 
> If there's just two expected-files, it's likely not a big problem,
> but if you have a bunch it's something to worry about.

There should be only two alternatives, given our current hashing
implementation, right?

Greetings,

Andres Freund


В списке pgsql-hackers по дате отправления:

Предыдущее
От: David Rowley
Дата:
Сообщение: Re: [HACKERS] path toward faster partition pruning
Следующее
От: David Rowley
Дата:
Сообщение: Re: [HACKERS] path toward faster partition pruning