Book Image

Microsoft Power BI Quick Start Guide - Third Edition

By : Devin Knight, Erin Ostrowsky, Mitchell Pearson, Bradley Schacht
Book Image

Microsoft Power BI Quick Start Guide - Third Edition

By: Devin Knight, Erin Ostrowsky, Mitchell Pearson, Bradley Schacht

Overview of this book

Updated with the latest features and improvements in Power BI, this fast-paced yet comprehensive guide will help you master the core concepts of data visualization quickly. You’ll learn how to install Power BI, design effective data models, and build basic dashboards and visualizations to help you make better business decisions. This new edition will also help you bridge the gap between MS Excel and Power BI. Throughout this book, you’ll learn how to obtain data from a variety of sources and clean it using the Power Query Editor. You’ll also start designing data models to navigate and explore relationships within your data and building DAX formulas to make data easier to work with. Visualizing data is a key element of this book, so there’s an emphasis on helping you get to grips with data visualization styles and enhanced digital storytelling. As you progress, you’ll start building your own dataflows, gain an understanding of the Common Data Model, and automate dataflow refreshes to eradicate data cleaning inefficiency. You’ll learn how to administer your organization's Power BI environment so that deployment can be made seamless, data refreshes can run properly, and security can be fully implemented. By the end of this Power BI book, you’ll know how to get the most out of Power BI for better business intelligence.
Table of Contents (13 chapters)
11
Other Books You May Enjoy
12
Index

Advanced data transformation options

Now that you should be more comfortable working within the Power Query Editor, let’s take the next step and discuss more advanced options. Often, you will find the need to go beyond these basic transforms when dealing with data that requires more care. In this section, you will learn about some common advanced transforms that you may have a need for, which include Conditional Columns, Fill Down, Unpivot, Merge Queries, and Append Queries.

Add Conditional Columns

Using the Power Query Editor Conditional Columns functionality is a great way to add new columns to your query that follow logical if/then/else statements. This concept of if/then/else is common across many programming languages, including Excel formulas. Let’s review a real-world scenario where you would be required to do some data cleansing on a file before it could be used. In this example, you will be provided with a file of all the counties in the United States...