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 SUMMARIZE function


When you want to get the totals for the data in your model, you can leverage the SUMMARIZE function to create a DAX expression to return the data back as a table.

This recipe uses the SUMMARIZE function on a single column. You will summarize the number of fatalities on the CRASH_DATA_T table by the numbers that are related to a weather condition. After building on this foundation, you will add additional columns and other options to round out the features available using this function.

How to do it...

  1. Connect to the CHAPTER_9_DAX database in SQL Server Management Studio.

  2. Right-click on the database, and select New Query | MDX to create a new MDX query window.

  3. To determine the number of fatalities by weather condition you will use the SUMMARIZE function along with the EVALUATE function to return a tableset:

            EVALUATE 
            SUMMARIZE ( 
                CRASH_DATA_T 
                ,WEATHER_T[WEATHER_CONDITION] 
            ,"Total Fatalities", SUM...