Re: bitmap heap scanning

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От Scott Marlowe
Тема Re: bitmap heap scanning
Дата
Msg-id dcc563d10803241916lcf3b446gfab42584df3b5525@mail.gmail.com
обсуждение исходный текст
Ответ на bitmap heap scanning  ("petchimuthu lingam" <spmlingam@gmail.com>)
Список pgsql-admin
On Mon, Mar 24, 2008 at 4:13 AM, petchimuthu lingam <spmlingam@gmail.com> wrote:
> How to enable bitmap heap scanning, my query is not using the scanning, i am
> using postgresql 8.1 version.
> i have enabled the option in the postgresql.conf, but still it is not using.

It's likely enabled, but the query planner thinks that another method
of doing things.  What does explain analyze select ... say about your
query plan?

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