Re: Tsearch2 really slower than ilike ?
От | Hervé Piedvache |
---|---|
Тема | Re: Tsearch2 really slower than ilike ? |
Дата | |
Msg-id | 200411161648.11519.herve@elma.fr обсуждение исходный текст |
Ответ на | Re: Tsearch2 really slower than ilike ? (Michael Fuhr <mike@fuhr.org>) |
Ответы |
Re: Tsearch2 really slower than ilike ?
Re: Tsearch2 really slower than ilike ? |
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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