Implement Row_number () over (partition by colname) in talend
<p>How do I implement <code>Row_number () over (partition by colname)</code> for the below data in Talend??</p>

<pre><code>Product_Category Product_Item
100 A123
200 B678
200 B234
100 A456
200 B345
</code></pre>

<p>Can this be done in tmap component? </p>