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

Filtering a related table


You can also pass to the FILTER function the RELATED function as the condition to limit the rows. In this recipe, you will filter your results to look at the Crash_Severity table and only use rows that are labeled as fatal.

How to do it...

  1. On the CRASH_DATA_T table in the Grid view, select an empty cell under the CASENUMBER measure.

  2. Enter the calculation in the formula bar:

            Fatal_Crashes:=SUMX( 
              FILTER(CRASH_DATA_T,     
            RELATED(Crash_Severity[Severity_Descr])="fatal"), 
            CRASH_DATA_T[INJURIES]) 
    
  3. Once you have done this, hit Enter.

  4. In this recipe, there are 2821 total fatalities that meet the condition.

How it works...

In this recipe, you are using the SUMX and the FILTER functions to calculate the total number of fatalities by summing the total INJURIES related to the Crash_Severity table. The SUMX function applies the sum calculation to the INJURIES column, only on the records from the CRASH_DATA_T table that are...