9781509306978

This comprehensive and authoritative guide will teach you the DAX language for business intelligence, data modeling, and analytics. Leading Microsoft BI consultants Marco Russo and Alberto Ferrari help you master everything from table functions through advanced code and model optimization. You’ll learn exactly what happens under the hood when you run a DAX expression, how DAX behaves differently from other languages, and how to use this knowledge to write fast, robust code. If you want to leverage all of DAX’s remarkable power and flexibility, this no-compromise “deep dive” is exactly what you need.

Perform powerful data analysis with DAX for Microsoft SQL Server Analysis Services, Excel, and Power BI

Master core DAX concepts, including calculated columns, measures, and error handling
Understand evaluation contexts and the CALCULATE and CALCULATETABLE functions
Perform time-based calculations: YTD, MTD, previous year, working days, and more
Work with expanded tables, complex functions, and elaborate DAX expressions
Perform calculations over hierarchies, including parent/child hierarchies
Use DAX to express diverse and unusual relationships
Measure DAX query performance with SQL Server Profiler and DAX Studio

Marco Russo and Alberto Ferrari are the founders of sqlbi.com, where they regularly publish articles about Microsoft Power BI, Power Pivot, DAX, and SQL Server Analysis Services. They have worked with DAX since the fi rst beta version of Power Pivot in 2009 and, during these years, sqlbi.com became one of the major sources for DAX articles and tutorials. Their courses, both in-person and online, are the major source of learning for many DAX enthusiasts.

They both provide consultancy and mentoring on business intelligence (BI) using Microsoft technologies. They have written several books and papers about Power BI, DAX, and Analysis Services. They constantly help the community of DAX users providing content for the websites daxpatterns.com, daxformatter.com, and dax.guide.

Marco and Alberto are also regular speakers at major international conferences, including Microsoft Ignite, PASS Summit, and SQLBits. Contact Marco at marco.russo@sqlbi.com, and contact Alberto at alberto.ferrari@sqlbi.com

Foreword
Introduction
Chapter 1: What is DAX?
Chapter 2: Introducing DAX
Chapter 3: Using basic table functions
Chapter 4: Understanding evaluation contexts
Chapter 5: Understanding CALCULATE and CALCULATETABLE
Chapter 6: DAX examples
Chapter 7: Time intelligence calculations
Chapter 8: Statistical functions
Chapter 9: Advanced table functions
Chapter 10: Advanced evaluation context
Chapter 11: Handling hierarchies
Chapter 12: Advanced relationships
Chapter 13: The VertiPaq engine
Chapter 14: Optimizing data models
Chapter 15: Analyzing DAX query plans
Chapter 16: Optimizing DAX
Index

What is included with this book?

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Definitive Guide to DAX, The Business intelligence for Microsoft Power BI, SQL Server Analysis Services, and Excel

Definitive Guide to DAX, The Business intelligence for Microsoft Power BI, SQL Server Analysis Services, and Excel

1509306978

Summary

Author Biography

Table of Contents

Supplemental Materials