Book Image

Hands-On Business Intelligence with DAX

By : Ian Horne
Book Image

Hands-On Business Intelligence with DAX

By: Ian Horne

Overview of this book

Data Analysis Expressions (DAX) is known for its ability to increase efficiency by extracting new information from data that is already present in your model. With this book, you’ll learn to use DAX’s functionality and flexibility in the BI and data analytics domains. You’ll start by learning the basics of DAX, along with understanding the importance of good data models, and how to write efficient DAX formulas by using variables and formatting styles. You’ll then explore how DAX queries work with the help of examples. The book will guide you through optimizing the BI workflow by writing powerful DAX queries. Next, you’ll learn to manipulate and load data of varying complexity within Microsoft products such as Power BI, SQL Server, and Excel Power Pivot. You’ll then discover how to build and extend your data models to gain additional insights, before covering progressive DAX syntax and functions to understand complex relationships in DAX. Later, you’ll focus on important DAX functions, specifically those related to tables, date and time, filtering, and statistics. Finally, you’ll delve into advanced topics such as how the formula and storage engines work to optimize queries. By the end of this book, you’ll have gained hands-on experience in employing DAX to enhance your data models by extracting new information and gaining deeper insights.
Table of Contents (18 chapters)
Section 1: Introduction to DAX for the BI Pro
Section 2: Understanding DAX Functions and Syntax
Section 3: Taking DAX to the Next Level

Progressive DAX Syntax and Functions

In this chapter, we'll start by taking a more in-depth look at the structure of DAX syntax, including naming requirements. We'll learn more about relationships, including how we deal with relationships between tables that involve multiple columns and how to create virtual relationships.

Next, we will learn about the different groups of functions that can be found in the DAX language. We'll then start to look at these groups in more detail, beginning with aggregation functions. We'll round off this chapter by learning about the functions that will help to deal with parent-child hierarchies.

This chapter is broken down into the following sections:

  • Breaking down DAX syntax
  • Dealing with relationships
  • Looking at DAX functions
  • Introduction to aggregation functions
  • Functions for parent-child hierarchies