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)

Tangling with Time and Duration

Time and duration have always gotten short shrift when it comes to DAX. Even though there are over 30 DAX functions classified as time intelligence, very few of them actually have anything to do with time in terms of hours, minutes, and seconds. And it wasn't until recently that you could actually aggregate durations but have the result displayed in the HH:mm:ss format. But despite DAX's lack of focus and effort on time and duration, time and duration can actually be just as important to a business and that business' analytics as calendar dates—sometimes even more so.

This chapter is all about demonstrating how to perform proper DAX calculations and analysis with time and duration, filling in some of the holes as it were in the DAX function library for actual time intelligence.

The following recipes will be covered in this...