title: iReport Group Expression Multiple Fields
body: <p>How could i write a Group Expression in <code>iReport</code> with Multiple Fields ? Report output should be as below.</p>
  
  <pre><code>Buyer   Product Unit    Quantity    Total
  ------------------------------------------
  Buyer2  Banana  Count    50
                                      50
  Buyer2  Banana  Kg        5
  Buyer2  Banana  Kg        5
                                      10
  Buyer2  Coconut Count    20
                                      20
  Buyer4  Papaya  Count   500
                                      500
  Buyer4  Mango   Count   200
                                      200
  Buyer5  Banana  Kg       15
  Buyer5  Banana  Kg       15
                                       30
  </code></pre>