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 based on a value


You can also filter your model to return the data you need for your analysis using the FILTER function. Using this function, you can limit the results on a table by applying an expression that is evaluated on each row of the table. For example, if you wanted to know the total number of crashes that had more than two major injuries, the FILTER function has a required syntax of FILTER(<table>,<filter>).

Getting ready

In this recipe, you will create a filter to sum the total fatalities on crashes that have more than two major injuries.

How to do it...

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

  2. Enter the calculation in the formula bar:

            Total_Fatalities_GT2_MajorInjuries := SUMX( 
            FILTER(CRASH_DATA_T, CRASH_DATA_T[MAJINJURY]>2),      
            CRASH_DATA_T[FATALITIES] 
             ) 
    
  3. Hit Enter.

  4. In this recipe, there are 88 total fatalities that meet the condition of CRASH_DATA_T...