title: Symfony Zend Lucene connect two tables
body: <p>I have 2 connected tables with a foreign key. I want to indexing fields from this two tables into <code>Zend_Search_Lucene</code> for searching.</p>
  
  <pre><code>//example:
  table 1 users:
    username:
    email:
    ...other fields
  table 2 Users info:
    users_id //Id from first table
    first_name
    last_name
    city
  </code></pre>
  
  <p>I already have <code>Zend_Search_Lucene</code> on the first table but I want to search with all this fields. </p>
  
  <p>How to merge first and second table?</p>