Course Code: 19208

Introduction to DAX for Power BI

Class Dates:
2 Days
Class Time:
Instructor-Led Training, Virtual Instructor-Led Training


  • Course Overview
  • In this two-day course, students will be introduced to using Data Analysis Expressions (DAX), which is the expression language that is used to create custom calculations in the Power BI Data model. The course covers some of the theoretical underpinnings of the data model and DAX, but the emphasis is on using DAX to solve common business problems. Students will learn how to write their own calculated columns, measures, and tables, how to visualize the way Power BI computes DAX calculations, and how to troubleshoot custom code. This instructor-led course consists of a combination of lecture, demonstrations, and hands-on labs.
  • Audience
  • This course is intended for business users who have been using Power BI to build analytic solutions and are ready to take advantage of the power and flexibility that DAX provides. Learning DAX is a very common “next step” for experienced Power BI users.


Course Details

  • Getting started with DAX
  • What is DAX?
  • Basics of DAX syntax
  • Creating a calculated column
  • Creating a calculated measure
  • Creating a calculated table
  • Differences in evaluation context
  • Rules of evaluation
  • Working with variables
  • Commenting your code
  • Testing your code
  • Performing basic calculations
  • Implicit measures
  • Adding quick measures
  • Doing basic math
  • Using logic in your calculations
  • Aggregating and summarizing data
  • Working with DAX data types
  • Working with context in the data model
  • Context defined
  • Data modeling basics
  • Introduction to dimensional modeling
  • Relationships and their effect on the evaluation context
  • Getting data from other tables using RELATED() and RELATEDTABLE()
  • Modifying the context using CALCULATE()
  • Looking up data without using relationships
  • Performing more advanced calculations
  • Handling errors gracefully
  • Using DAX iterator functionsq
  • Using table manipulation functions
  • Troubleshooting your calculations using the Performance Analyzer and DAX Studio
  • Working with time
  • Performing date calculations
  • Working with date tables
  • Generating a date table with the CALENDAR() function
  • Defining custom operating periods
  • YTD, QTD, and MTD calculations
  • YTD, QTD, and MTD calculations
  • Finding year-over-year change
  • Finding moving averages
  • Enhancing the user experience
  • Controlling visibility of your measures
  • Using What-if parameters
  • Adding banding
  • Using DAX to provide row-level security