You learned about report types in detail in Chapter 5, Understanding Report Types. In that chapter, we introduced what a report type is and why the report type is so important for building reports. We also discussed the report type category, standard report type, custom report type and ended with a hands-on exercise to create a custom report type, extend a custom report type, and apply it by creating a new report.

In this chapter, we will onto bucket fields and custom summary formula. It is not like a report type, where you have to select a report type when creating a report, but bucket fields and custom summary formulas are optional; you may use or not use them. But in many scenarios, we can take advantage of these features to build an advanced report, such as to show the growth trends month-by-month in percentages using a custom summary formula...