Re: Why could GEQO produce plans with lower costs than the standard_join_search?

Поиск
Список
Период
Сортировка
От Tom Lane
Тема Re: Why could GEQO produce plans with lower costs than the standard_join_search?
Дата
Msg-id 1222.1558650801@sss.pgh.pa.us
обсуждение исходный текст
Ответ на Re: Why could GEQO produce plans with lower costs than thestandard_join_search?  (Donald Dong <xdong@csumb.edu>)
Список pgsql-hackers
Дерево обсуждения 
Donald Dong <xdong@csumb.edu> writes:
> Perhaps the cheapest-total-cost should not be the best/only choice
> for fitness?

Well, really the GEQO code should be thrown out and rewritten from
the ground up ... but that hasn't quite gotten done yet.

            regards, tom lane

В списке pgsql-hackers по дате отправления:

Предыдущее
От: Tom Lane
Дата:
Сообщение: Re: Top-N sorts in EXPLAIN, row count estimates, and parallelism
Следующее
От: Mark Dilger
Дата:
Сообщение: Re: ClosePipeStream failure ignored in pg_import_system_collations