title: How to remove duplication with Talend Data Preparation?
body: <p>I would like to remove duplication with my Talend Data Preparation and I have a column named: HOURS, I want to calculate those hours between them and remove the email and names duplication, here is an example of my table : </p>
  
  <p><a href="https://i.stack.imgur.com/uy6aV.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/uy6aV.png" alt="enter image description here"></a></p>
  
  <p>As you can see I have a lot of user_name and email is the same, but my hours are not same, I want to add my hours together depending on the user_name and email and remove any duplication of my user_name and email at the same time.</p>