Re: The use of cpu_index_tuple_cost by the query planner

Поиск
Список
Период
Сортировка
От Simon Riggs
Тема Re: The use of cpu_index_tuple_cost by the query planner
Дата
Msg-id CA+U5nMLBeb8JUUyo7pxd5rmD27JvcFfQTO8uGb8ecW1U-P=vLQ@mail.gmail.com
обсуждение исходный текст
Ответ на The use of cpu_index_tuple_cost by the query planner  (Antonio Carlos Salzvedel Furtado Junior <acsfj08@inf.ufpr.br>)
Ответы Re: The use of cpu_index_tuple_cost by the query planner  (Jeff Davis <pgsql@j-davis.com>)
Список pgsql-novice
On 27 June 2012 21:28, Antonio Carlos Salzvedel Furtado Junior
<acsfj08@inf.ufpr.br> wrote:

> I'm trying to understand the use of PostgreSQL tuning parameters by the
> query planner's cost estimator. I'm trying to use simple queries to
> understand how these parameters would affect the estimated cost. However, I
> haven't still been able to see the cpu_index_tuple_cost.

Your best hope is to read the source code. Things will become much clearer.

--
 Simon Riggs                   http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services

В списке pgsql-novice по дате отправления:

Предыдущее
От: Antonio Carlos Salzvedel Furtado Junior
Дата:
Сообщение: The use of cpu_index_tuple_cost by the query planner
Следующее
От: Jeff Davis
Дата:
Сообщение: Re: The use of cpu_index_tuple_cost by the query planner