title: how to transform comma separated column into multiples rows in db2
body: <p>I have the following table (the number of the references is variable):</p>
  
  <pre><code>Id | FK_ID| Reference |
  -----------------------
  1    2100   GI2, GI32
  2    2344   GI56
  </code></pre>
  
  <p>And I need the following result:</p>
  
  <pre><code>Id | FK_ID| Reference |
  -----------------------
  1    2100   GI2 
  2    2100   GI32
  3    2344   GI56
  </code></pre>
  
  <p>Is there any short way to transform the data like this using DB2?</p>