Book Image

DAX Cookbook

By : Greg Deckler
Book Image

DAX Cookbook

By: Greg Deckler

Overview of this book

DAX provides an extra edge by extracting key information from the data that is already present in your model. Filled with examples of practical, real-world calculations geared toward business metrics and key performance indicators, this cookbook features solutions that you can apply for your own business analysis needs. You'll learn to write various DAX expressions and functions to understand how DAX queries work. The book also covers sections on dates, time, and duration to help you deal with working days, time zones, and shifts. You'll then discover how to manipulate text and numbers to create dynamic titles and ranks, and deal with measure totals. Later, you'll explore common business metrics for finance, customers, employees, and projects. The book will also show you how to implement common industry metrics such as days of supply, mean time between failure, order cycle time and overall equipment effectiveness. In the concluding chapters, you'll learn to apply statistical formulas for covariance, kurtosis, and skewness. Finally, you'll explore advanced DAX patterns for interpolation, inverse aggregators, inverse slicers, and even forecasting with a deseasonalized correlation coefficient. By the end of this book, you'll have the skills you need to use DAX's functionality and flexibility in business intelligence and data analytics.
Table of Contents (15 chapters)

Computing percentages

Power BI Desktop has a handy feature for showing percentages when numeric measures or column aggregations are placed in the Values area of visualizations. This feature allows you to right-click the measure or column and choose Show value as and then Percent of grand total, Percent of column total, and Percent of row total, depending on the type of visual. This is a nice, easy method to compute and display these percentages. However, not all places where DAX is used has such a convenient shortcut. Therefore, this recipe demonstrates how to compute these percentages using just plain old DAX.

Getting ready

To prepare for this recipe, perform the following steps:

  1. Open Power BI Desktop.
  2. Use an Enter Data...