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 TOTALYTD function


The TOTALYTD function is an additive measure that returns the total records from the beginning of the year to the date in the context. For example, you can use this function to calculate the total number of crashes from 1/1/2016 to the date that you selected in the filter context. You can quickly calculate the number of records at any point in the year.

How to do it...

  1. Open the Model.bim to the CRASH_DATA_T table.

  2. In the measure creation area, click on an empty cell to create a measure to return the year to date cumulative total for the number of crashes:

            YTDTotals:=TOTALYTD( COUNT 
                (CRASH_DATA_T[CASE_NUMBER]), 
            Calc_Date_T[CRASH_DATE]) 
    
  3. Then press Enter to create the measure:

  4. Now deploy the solution to the server and switch to SQL Server Management Studio to view the results. Browse the model and select the YEAR, Month_Name, CRASH_DATE, Records, and YTDTotals:

  5. The results displayed in the YTDTotals measure are the number...