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)

Emulating loops

Unlike the vast majority of coding language, DAX has no code constructs to perform true looping. This can be somewhat challenging, and perhaps a bit disconcerting, for individuals new to DAX who come from a coding background in a more traditional programming language. Most developers have come to rely heavily upon control flow statements such as the for and while loops. The for and while loops have a similar structure. Each has a header portion that specifies the boundary conditions or limits for iteration. Each also has a body, which is a group of coding statements that are executed once per iteration.

This recipe provides methods for emulating for and while loops in DAX using table constructs.

Getting ready