If you are coming from Oracle database background, you will find it difficult in Netezza without ROWNUM pseudo column. The one possible solution to this is ROW_NUMBER() analytical function as Netezza ROWNUM pseudo column alternative. You can use ROW_NUMBER analytic function as a Netezza ROWNUM equivalent. I think most of the distributed databases does not provide the ROWNUM columns. There is a LIMIT clause to restrict the output but very difficult to assign the sequential numbers to the rows in the Netezza tables. Even Netezza Sequences also does not produce…