title: Documentum DQL join by repeating attribute
body: <p>I tried to join these tables using repeating attribute:</p>
  
  <p><em>table1</em>:</p>
  
  <pre><code>r_object_id           codes
  ...                   1,2,3,4,5
  ...                   7,6,3,4,5
  ...                   1,5,4,2,3
  </code></pre>
  
  <p>Where <code>codes</code> attribute is the repeating attribute.</p>
  
  <p><em>table2</em>:</p>
  
  <pre><code>r_object_id      name      code
  ...              hello      1
  ...              aba        2
  ...              father     3
  ...              mother     4
  ...              hello2     5
  ...              hello3     6
  ...              hello4     7
  </code></pre>
  
  <p>I want result like this:</p>
  
  <pre><code>table1.r_object_id      names
  ...                     hello,aba,father,mother,hello2
  </code></pre>
  
  <p>What can I do?</p>