Book Image

Tabular Modeling with SQL Server 2016 Analysis Services Cookbook

By : Derek Wilson
Book Image

Tabular Modeling with SQL Server 2016 Analysis Services Cookbook

By: Derek Wilson

Overview of this book

SQL Server Analysis Service (SSAS) has been widely used across multiple businesses to build smart online analytical reporting solutions. It includes two different types of modeling for analysis services: Tabular and Multi Dimensional. This book covers Tabular modeling, which uses tables and relationships with a fast in-memory engine to provide state of the art compression algorithms and query performance. The book begins by quickly taking you through the concepts required to model tabular data and set up the necessary tools and services. As you learn to create tabular models using tools such as Excel and Power View, you’ll be shown various strategies to deploy your model on the server and choose a query mode (In-memory or DirectQuery) that best suits your reporting needs. You’ll also learn how to implement key and newly introduced DAX functions to create calculated columns and measures for your model data. Last but not least, you’ll be shown techniques that will help you administer and secure your BI implementation along with some widely used tips and tricks to optimize your reporting solution. By the end of this book, you’ll have gained hands-on experience with the powerful new features that have been added to Tabular models in SSAS 2016 and you’ll be able to improve user satisfaction with faster reports and analytical queries.
Table of Contents (18 chapters)
Tabular Modeling with SQL Server 2016 Analysis Services Cookbook
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Using the IF function


DAX includes several functions that are classified as logical functions. These functions let you apply conditions to your calculations and measures when required. Some of the more common functions that you will use include IF, AND, and SWITCH. Recipes for each of these functions will be provided in this section.

The IF function performs a logical test to return either true or false when the condition is met. In this recipe, you will add a formula that creates a label on each row. This label will let your users know which rows had fatalities or were non-fatal. The IF function has a required syntax of IF(<logical_test>,<value_if_true>,<value_if_false>).

Getting ready

All of these recipes will use the Chapter_9_DAX tabular model to add calculations. The sample model is available to download.

How to do it...

  1. Open the Chapter_9_DAX solution, and select the CRASH_DATA_T table and make sure you are in the data Grid view.

  2. Scroll to the right until you find Add Column...