Data Densification in Oracle APEX

Data is often stored in sparse form and business often wants to see data in a more organized and explicit fashion. Report developers working across reporting technologies face a requirement to show a record with a '0' in the measures columns if no data exists for a particular combination of dimension values. For such a requirement, we will have to densify the data and this article presents a way to densify and aggregate on the fly.

I wish to state that this article is borrowed from my book on Oracle APEX 4.2 Reporting. You can check the table of contents and a brief description along with screenshots.

Let me explain the use case now