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mysqlsql-order-by

MySQL order by relevance

I have a search form which searches a site content table to pull back appropriate results.

I want to search the title and content fields and pull back results in order of relevance. Giving highest priority to the title.

Say we had a table (tblContent) of 

intID | strTitle    | txtContent

1     | Smith John  | Lorem Ipsum
2     | Lorem Ipsum | Lorem John Smith Ipsum
3     | John Smith  | Lorem Ipsum Lorem Ipsum
4     | Lorem Ipsum | Lorem Ipsum Lorem Ipsum
5     | Lorem Ipsum | Lorem Ipsum Smith John

And you were searching for "John Smith" the results should come back in the order of 3,2,1,5

How is this possible?

Solution

  • I managed to get pretty spot on with this:

    SELECT *, 
( (1.3 * (MATCH(strTitle) AGAINST ('+john+smith' IN BOOLEAN MODE))) + (0.6 * (MATCH(txtContent) AGAINST ('+john+smith' IN BOOLEAN MODE)))) AS relevance 
FROM content 
WHERE (MATCH(strTitle,txtContent) AGAINST ('+john+smith' IN BOOLEAN MODE) ) 
ORDER BY relevance DESC