From: | Andreas Kretschmer <akretschmer(at)spamfence(dot)net> |
---|---|
To: | pgsql-performance(at)postgresql(dot)org |
Subject: | Re: BETWEEN optimizer problems with single-value range |
Date: | 2006-03-15 20:47:00 |
Message-ID: | 20060315204700.GA17623@KanotixBox |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-hackers pgsql-performance |
Merlin Moncure <mmoncure(at)gmail(dot)com> schrieb:
> On 3/15/06, Kevin Grittner <Kevin(dot)Grittner(at)wicourts(dot)gov> wrote:
> > Attached is a simplified example of a performance problem we have seen,
> > with a workaround and a suggestion for enhancement (hence both the
> > performance and hackers lists).
>
>
> Hi Kevin. In postgres 8.2 you will be able to use the row-wise
8.2? AFAIK, Feature freeze in juni/juli this year...
Release august/september.
> comparison for your query which should guarantee good worst case
> performance without having to maintain two separate query forms. it
Perhaps, a bitmap index scan (since 8.1) are useful for such querys.
Thats why i asked which version.
Andreas
--
Really, I'm not out to destroy Microsoft. That will just be a completely
unintentional side effect. (Linus Torvalds)
"If I was god, I would recompile penguin with --enable-fly." (unknow)
Kaufbach, Saxony, Germany, Europe. N 51.05082°, E 13.56889°
From | Date | Subject | |
---|---|---|---|
Next Message | Merlin Moncure | 2006-03-15 22:11:16 | Re: [PERFORM] BETWEEN optimizer problems with single-value range |
Previous Message | Kevin Grittner | 2006-03-15 20:25:58 | Re: BETWEEN optimizer problems with single-value |
From | Date | Subject | |
---|---|---|---|
Next Message | Merlin Moncure | 2006-03-15 22:11:16 | Re: [PERFORM] BETWEEN optimizer problems with single-value range |
Previous Message | Kevin Grittner | 2006-03-15 20:43:01 | Re: Background writer configuration |