| From: | Hervé Piedvache <herve(at)elma(dot)fr> |
|---|---|
| To: | Michael Fuhr <mike(at)fuhr(dot)org> |
| Cc: | pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: Tsearch2 really slower than ilike ? |
| Date: | 2004-11-16 15:48:11 |
| Message-ID: | 200411161648.11519.herve@elma.fr |
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| Lists: | pgsql-performance |
Michael,
Le Mardi 16 Novembre 2004 16:32, Michael Fuhr a écrit :
> On Tue, Nov 16, 2004 at 03:55:58PM +0100, Hervé Piedvache wrote:
> > WHERE s.idx_site_name @@ to_tsquery('atari');
>
> How much text does each site_name field contain? From the field
> name I'd guess only a few words. Based on my own experience, if
> the fields were documents containing thousands of words then I'd
> expect tsearch2 to be faster than ILIKE by an order of magnitude
> or more.
Yes site name ... is company names or web site name ... so not many word in
each record ... but I don't understand why more words are more efficient than
few words ?? sorry ...
Regards,
--
Hervé Piedvache
Elma Ingénierie Informatique
6 rue du Faubourg Saint-Honoré
F-75008 - Paris - France
Pho. 33-144949901
Fax. 33-144949902
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