DAX for Power BI Part 6.2 - Comparing Date Ranges

By Andrew Gould

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This video explains how to use DAX time intelligence functions to modify the filter context applied to a measure, allowing you to compare calculations for different time periods. You'll learn the differences between the DateAdd, SamePeriodLastYear, PreviousYear and ParallelPeriod functions. You'll also see how to enter specific dates using the DateValue and Date functions, and how to use these dates in the DatesBetween function. Finally, you'll learn how to calculate moving averages using FirstDate and LastDate functions and the DatesInPeriod function.

Chapters
00:00 Topic list
00:45 Importing Data and Creating a Basic Report
03:54 Comparing with the Previous Year
07:26 The PreviousYear Function
09:00 Differences Between Time Intelligence Functions
11:26 Comparing Previous Quarters
13:50 What's in a Name?
15:19 Calculating Percentage of Previous Year Total
17:14 The ParallelPeriod Function
20:16 Calculating the Total of the Same Year
21:45 Entering a Specific Date Range
26:39 Checking a Date Range Using Filters
28:16 Calculating the First and Last Date of a Period
31:12 Adjusting the First Date with DateAdd
32:16 Calculating the Moving Average using DatesBetween
33:18 Using the DatesInPeriod Function