title: Pentaho data-integration, add row in text file output
body: <p>I have a stupid problem but I cannot go ahead until now...
  I have a simple "Table Input" with a query, this query return:</p>
  
  <p>Name, Answers</p>
  
  <p>Alice, 1</p>
  
  <p>Bob, 10</p>
  
  <p>Chris, 7</p>
  
  <p>...</p>
  
  <p>This output is sent to a "Text File Output" and until here all is ok, it wrote a simple txt file with all data.</p>
  
  <p>Now I need to add at the end of this file the sum of all the answers, so the output should be</p>
  
  <p>Name, Answers</p>
  
  <p>Alice, 1</p>
  
  <p>Bob, 10</p>
  
  <p>Chris, 7</p>
  
  <p>TOTAL, 18</p>
  
  <p>I thought it was a simpler thing but I cannot find a solution... </p>
  
  <p>Can anyone help me to find a way to solve this issue?</p>
  
  <p>Thanks in advance</p>
  
  <p>Roy</p>