I think it is extremely few developers that haven’t been asked to create a Top-N report. The questions by the business that can be classified as a Top-N question are legion such as the following:
Which of our products sell the most?
Which user profiles create the most tweets?
Which sales employees generate most leads?
Which hotels in the chain have the least complaints?
The last one could strictly speaking be called a Bottom-N question, but that is in principle exactly the same. For a Top-N report, you order the data by a specific descending order and pick the Top-N rows of data. If ...
