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 ALL to calculate a percentage


In this recipe, you will use the ALL function in the denominator of a percentage calculation. This ensures that you see all records in the calculation you are performing.

Getting ready

Complete the steps in the Using ALL to remove filters recipe to create the initial calculation and understand how ALL ignores any filters.

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:

            Pct_of_Crashes:=  
              COUNT(CRASH_DATA_T[CASENUMBER])/ 
            CALCULATE ( 
            COUNT(CRASH_DATA_T[CASENUMBER]), 
            ALL(CRASH_DATA_T) ) 
    
  3. Once you have done this, hit Enter.

  4. The result returns a 1. To change the format to a percentage, edit the Format in the Properties window to Percentage.

  5. The result will now show 100.00 %.

  6. Deploy the model to the server by selecting the Build menu and the Deploy Chapter_9_DAX.

  7. Switch to SQL Server Management...