title: Match against query not working - incorrect parameters
body: <p>I have a table with articles and a table with categories. Each category has a number of keywords and I want to use those keywords to determine if an article belongs to a certain category.</p>
  
  <p>I'm using the query below:</p>
  
  <pre><code>SELECT 
    path,
    title,
    description,
    keywords
  FROM
    (
    SELECT 
      path, 
      keywords, 
      (select title from article where id = 164016) as title,
      (select description from article where id = 164016) as description
    FROM 
      categories c 
  ) as x
  WHERE 
    MATCH (title, description) AGAINST ('my keywords' IN BOOLEAN MODE)  
  </code></pre>
  
  <p>For some reason this query is not working because of incorrect paramaters with MATCH but I can't figure out what it is.</p>