Re: query optimization - mysql vs postgresql

Поиск
Список
Период
Сортировка
От Alvaro Herrera
Тема Re: query optimization - mysql vs postgresql
Дата
Msg-id 20060519200057.GD4444@surnet.cl
обсуждение исходный текст
Ответ на Re: query optimization - mysql vs postgresql  (Warren Little <warren.little@meridiascapital.com>)
Список pgsql-admin
Warren Little wrote:
> Sorry,
> here are the attachments.
> Not sure about the statistics question, I have done a vacuum analyze on
> every table in the database.

The problem is that the planner is unable to appropiately order OUTER
JOINs in released versions.  In 8.2 it can do some reordering, so it
would probably come up with a better plan.  Without jumping to 8.2,
however, the best you could do is reorder the query yourself manually.

--
Alvaro Herrera                                http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support

В списке pgsql-admin по дате отправления:

Предыдущее
От: Simon Riggs
Дата:
Сообщение: Re: does wal archiving block the current client connection?
Следующее
От: "Ben K."
Дата:
Сообщение: Re: lock a database from new connections, without modifying