title: How to exclude column from FTS3 table search
body: <p>I have such table:</p>
  
  <pre><code>CREATE VIRTUAL TABLE t USING FTS3(hidden, text1, text2)
  </code></pre>
  
  <p>I would like user to be able to searh over 'text1' and 'text2' columns, so the query is</p>
  
  <pre><code>SELECT docid FROM t WHERE t MATCH ?
  </code></pre>
  
  <p>And possible requests are:</p>
  
  <pre><code>SELECT docid FROM t WHERE t MATCH 'foo'
  SELECT docid FROM t WHERE t MATCH 'text1:foo OR text2:bar'
  </code></pre>
  
  <p>Q: how can I exclude 'hidden' column from search, so that user can't find rows by hidden value? </p>
  
  <p>I am going to use 'hidden' column to refer to rows in secondary table with additional information.</p>