title: How to show multiple records in just 1 detail band or group header
body: <p>i am new to iReport/jasper. I have this simple scenario: <br>
  I have two fields: recordno &amp; name. Now, I have 3 names in my db with the same recordno: name: John, Mark and Steve. Now, I want to show the 3 names (<em>with parameter of the same recordno value</em>) in just one detail or a group header, however, my output shows the 3 names <strong>but in 3 details/group as well</strong>. How to prevent this? Or how to group or combine them as one?<br><br></p>
  
  <p><strong>Expected Result:</strong><br></p>
  
  <pre><code>-------DETAIL/GROUP BAND-------
  John
  Mark
  Steve
  -----------end----------------
  </code></pre>
  
  <p><strong>Unexpected Result:</strong><br></p>
  
  <pre><code>-------DETAIL/GROUP BAND-------
  John
  -----------end----------------
  -------DETAIL/GROUP BAND-------
  Mark&lt;br&gt;
  -----------end-----------------
  -------DETAIL/GROUP BAND-------
  Steve&lt;br&gt;
  -----------end-----------------
  </code></pre>