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trei litere..., ??

RIon
post 29 Jul 2005, 19:27
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Nu se poate face un search dupa doar trei litere???


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vv
post 29 Jul 2005, 19:42
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S-a mai discutat, foloseste functia search smile.gif

(nu, nu se poate, din motive de mysql, adica s-ar putea dar ar fi prea complicat si ar trebui modificat invisionul, asa ca mai bine lipsa, foloseste google daca ai nevoie)

This post has been edited by vv: 30 Jul 2005, 14:03


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RIon
post 29 Jul 2005, 19:53
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Parca imi aduc aminte ca s-a mai discutat...insa ma gandeam ca evolueaza tehnologia sad.gif


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bertro
post 1 Aug 2005, 08:13
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pai tocmai "evolutia" tehnologiei a introdus limita sad.gif
cu alte cuvinte limita a aparut in versiunile noi de mysql, odata cu suportul pentru cautarile full-text

QUOTE(mysql manual)
Some words are ignored in full-text searches:

    *  Any word that is too short is ignored. The default minimum length of words that are found by full-text searches is four characters.
    *  Words in the stopword list are ignored. A stopword is a word such as “the” or “some” that is so common that it is considered to have zero semantic value. There is a built-in stopword list.


atat lista de stop-words cat si limita inferioara a numarului de caractere pot fi modificate, insa intervine o problema: functiile de cautare full-text returneaza rezultatele dupa relevanta. in cazul in care cuvantul cautat apare in mai mult de 50% din randurile tabelului, rezultatul returnat pentru acel cuvant va fi zero. (da! mysql va returna ca acel cuvant nu a fost gasit!), asta pentru ca fiind asa de frecvent este considerat "stopword", adica (,) cuvant fara "greutate". de aia cand primesti rezultatul zero nu poti sti daca intr-adevar nu a fost gasit nimic sau au fost gasite mai mult de 50% din randurile tabelului.

de aceea permiterea unor cuvinte prea scurte ar putea genera rezultate ciudate la cautare. nasoala treaba, dar asta este...




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MoneyTalks
post 1 Aug 2005, 08:30
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Acum am testat si... merge cautarea si dupa o litera... smile.gif

Dar... numai cind cauti un user name... rolleyes.gif


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