Comments on: MySQL Relevancy Search

by: Peter

Sun, 23 Mar 2008 12:05:47 +0000

Great - thanks for the pointers, this makes life so much more easier - why didn’t I know about it before? :)

by: Jan

Mon, 24 Sep 2007 18:59:45 +0000

Nice instruction, definitely an easier thing than writing your own sorting algorithms… thanks!

by: Todd

Wed, 08 Aug 2007 20:48:25 +0000

Nevermind.. I was looking at mysql.com/docs and found this “In addition, words that are present in more than 50% of the rows are considered common and do not match. ”

I believe this is what is happening as I only have a few test rows.

by: Todd

Wed, 08 Aug 2007 19:34:20 +0000

Anyone know why this sql string does not work with FULL TEXT but the #2 with boolean does?

Returns nothing, not working
1.) SELECT Id, DocSearchDump, DocName, DocKeywords, DocDescription, MATCH(DocName, DocKeywords, DocSearchDump, DocDescription) AGAINST (’Work Order Reasons’) AS score FROM doc_info WHERE MATCH(DocName, DocKeywords, DocSearchDump, DocDescription) AGAINST (’Work Order Reasons’) ORDER BY score DESC

WORKS: Returns 2 results
2.) SELECT Id, DocSearchDump, DocName, DocKeywords, DocDescription, MATCH(DocName, DocKeywords, DocSearchDump, DocDescription) AGAINST (’Work Order Reasons’ IN BOOLEAN MODE) AS score FROM doc_info WHERE MATCH(DocName, DocKeywords, DocSearchDump, DocDescription) AGAINST (’Work Order Reasons’ IN BOOLEAN MODE) ORDER BY score DESC

by: Ryan

Sat, 21 Jul 2007 10:16:32 +0000

Thanks Mike, will give it a shot, nice article btw clear and easy to understand even for a novice like me!

by: Mike

Fri, 20 Jul 2007 22:55:01 +0000

You may want to try adding “error_reporting(E_ALL)” to the beginning of your code to see if you are producing any errors.

You can also try running the Query manually through MySQL or even PHPMyAdmin to see if your SQL syntax is off.

by: Ryan

Fri, 20 Jul 2007 21:38:17 +0000

Hmm I just seem to get a blank page, no errors of anything ?

My code:

$search=$_GET[’search’];

$query = “SELECT *, MATCH (title, description, url) AGAINST (’$search’) AS score FROM links WHERE MATCH (title, description, url)

AGAINST (’$search’)”;
$result = mysql_query($query) or die(mysql_error());

any ideas ? Thanks

by: Matt

Fri, 20 Jul 2007 15:04:22 +0000

With regards to weighted columns, I was reading something in the boolean mode information in the MySQL manual that allowed for weighted operators. Hopefully this is of help to you.

by: Apurva

Thu, 22 Mar 2007 10:45:41 +0000

w00t, thank you, thank you, thank you. =D

thank you so much for this… and also thanks to those awesome people at MySQL. =)

by: Gareth

Tue, 31 Oct 2006 15:43:58 +0000

Great article - thank you!

One question though… Is there any straight forward way of applying weighting to certain columns?

For example, if my columns are “title” and “article”, I would like matches in the title column to be more relevent than matches in the article column…