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Hands-On Business Intelligence with DAX

Hands-On Business Intelligence with DAX

By : Horne
5 (3)
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Hands-On Business Intelligence with DAX

Hands-On Business Intelligence with DAX

5 (3)
By: 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)
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1
Section 1: Introduction to DAX for the BI Pro
7
Section 2: Understanding DAX Functions and Syntax
14
Section 3: Taking DAX to the Next Level

Debugging errors in your DAX code

Sometimes, you may end up writing a DAX expression that does not work as expected. It may return an error that needs to be handled, or it may not return the desired output.

Many other programming languages come with built-in tools that allow you to debug code line by line. However, there are no built-in tools available with DAX. It simply consists of functions that parameters can be passed to.

For simple DAX expressions, debugging should be fairly straightforward. However, for code where you have multiple layers of nested expressions, it may become necessary to break the expression down into smaller, more manageable parts. By reducing the code into smaller segments, you will be able to inspect different values and confirm which ones are returning the expected results and which ones are not. This is where using variables becomes invaluable when...

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