Re: Tsearch2 really slower than ilike ?

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От Hervé Piedvache
Тема Re: Tsearch2 really slower than ilike ?
Дата
Msg-id 200411161648.11519.herve@elma.fr
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Ответ на Re: Tsearch2 really slower than ilike ?  (Michael Fuhr <mike@fuhr.org>)
Ответы Re: Tsearch2 really slower than ilike ?  ("Joshua D. Drake" <jd@commandprompt.com>)
Re: Tsearch2 really slower than ilike ?  (Oleg Bartunov <oleg@sai.msu.su>)
Список 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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