Chapter 7. Date Calculations in DAX
Many analyses of data have to deal with dates. Microsoft SQL Server PowerPivot for Excel offers a number of functions that simplify many calculations on dates that are typical in a business scenario, but using the right function in the right way requires some explanation. As you see in this chapter, the first step in date calculations is to create a separate Dates table that supports most of the requirements.
Working with a Dates Table
In some examples in the previous chapters, we defined calculated columns that extracted parts of the date that we used to group dates, such as the year and the month. This technique might be applied to each table containing a date, but it would quickly become hard to manage. It ...