Re: search in serialized string

From: Date: Sat, 24 Aug 2002 14:45:45 +0000
Subject: Re: search in serialized string
References: 1  Groups: php.general 
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Hi Rodrigo, > I have a form to post resumes. In one parte the user have a option to choose > up to 5 languages and his knowledge in it. example : english: basic advanced > .... > My problem is that was stored serialized in the BD and now I need to do a > search by language and knowledge. How can I do this. I've tried everything > unsuccessfully. example: search english advanced. If the user have english > basic and another advanced he/her appear in the search. Is it my imagination or have we seen this question posted to the list numerous times? Can we assume a "BD" means db/database? What do you mean by "serialised"? If I speak English very well and can managed basic greetings etc in Spanish would you enter both of my (supposed) language skills in one field or would each language appear in its own field/separate rows? If the table is properly designed/normalised, ie each language and level of skill is in its own field, then why can't you do something like: ...WHERE field LIKE "%english%" AND field LIKE "%advanced%" However I would think about having a field for language-name accompanied by another field for skill-level. This would get you away from those wild-cards and into faster queries that can use indexes, eg ...WHERE ( language = "english" ) AND ( level = "advanced" ) --or even "A" for advanced Perhaps if you gave us some examples of what you want to happen, and the code you are currently using, we could offer more specific information - repeating an unsuccessful question invites repetition of the non-answer! Regards, =dn

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