| From: | Larry Rosenman <ler(at)lerctr(dot)org> |
|---|---|
| To: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Neil Conway <nconway(at)klamath(dot)dyndns(dot)org>, mloftis(at)wgops(dot)com, DCorbit(at)connx(dot)com, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: What is wrong with hashed index usage? |
| Date: | 2002-06-21 20:09:19 |
| Message-ID: | 1024690164.751.54.camel@lerlaptop |
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| Lists: | pgsql-hackers |
On Fri, 2002-06-21 at 11:51, Bruce Momjian wrote:
> Tom Lane wrote:
> > Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
>
> >
> > > How about an elog(NOTICE) for hash use?
> >
> > I don't think that's appropriate.
>
> I was thinking of this during CREATE INDEX ... hash:
>
> NOTICE: Hash index use is discouraged. See the CREATE INDEX
> reference page for more information.
>
> Does anyone else like/dislike that?
I dislike it. Some clients/dba's will wonder why we even have them.
Why should we bug the DBA on EVERY index that is a hash?
I know I personally hate the FreeBSD linker warnings about certain
functions, and don't like that precedent.
--
Larry Rosenman http://www.lerctr.org/~ler
Phone: +1 972-414-9812 E-Mail: ler(at)lerctr(dot)org
US Mail: 1905 Steamboat Springs Drive, Garland, TX 75044-6749
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