Re: search string / query format

From: Date: Sat, 10 Jul 2004 02:34:26 +0000
Subject: Re: search string / query format
References: 1 2  Groups: php.general 
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>>Keyword AND keyword2 >>"keyword keyword2" -keyword3 It doesn't support AND or OR but it does use - + * and others. >Consult thine manual!! (The MySQL one) ;) http://dev.mysql.com/doc/mysql/en/Fulltext_Search.html The problem is getting a FULLTEXT to sort by relevancy. This was a real pain, until our friend John W. showed me the error of my ways; (see below). MySQL> "The preceding example is a basic illustration showing how to use the MATCH() MySQL> function MySQL> where rows are returned in order of decreasing relevance" I never did believe the "examples" helped me: http://dev.mysql.com/doc/mysql/en/Fulltext_Search.html You will need something like this to make the operators display according to relevancy. This works: SELECT *,MATCH (field1,field2,field3) AGAINST ('Margaret Atwood' IN BOOLEAN MODE) AS relevancy FROM mytable WHERE MATCH (field1,field2,field3) AGAINST ('Margaret Atwood' IN BOOLEAN MODE) ORDER BY relevancy DESC; This does not sort by relevancy well at all: SELECT * (field1,field2,field3) FROM mytable AGAINST ('Margaret Atwood' IN BOOLEAN MODE); P.S. John W.: thanks for helping me on my post last week. I finally got this working. John "John W. Holmes" wrote: > Ed Lazor wrote: > > I'm going to create a search page that accepts input similar to places like > > Yahoo and Google. > [snip] > > Also, I've heard that MySQL's indexing can > > support some of this, but I'm not sure how much. > > Using a FULLTEXT index and searching in BOOLEAN mode supports the type > of search strings that you wrote. > > Consult thine manual!! (The MySQL one) ;)

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