Definitive Guide to DAX, The: Business intelligence with Microsoft Excel, SQL Server Analysis Services, and Power BI - Couverture souple

Ferrari, Alberto

Couverture souple

ISBN 10 : 073569835X ISBN 13 : 9780735698352

Editeur : Pearson Education Limited, 2015

A propos du livre

Présentation de l'éditeur :

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

Présentation de l'éditeur :

The Definitive Guide to DAX is the most comprehensive and authoritative guide to Microsoft's DAX language for business intelligence and analytics. While other books cover only the basics, this guide offers expert guidance on everything intermediate-to-advanced Excel users and BI professionals need to know, from the basics to innovative high-performance techniques.

 

Two leading Microsoft BI consultants and mentors introduce DAX through realistic and useful examples, presenting common calculations that empower users to get results immediately. Alberto Ferrari and Marco Russo demystify complex topics, showing readers exactly what happens under the DAX engine's "hood" when they run a DAX expression. Ferrari and Russo carefully walk through common scenarios where DAX may not be easy to grasp; show how to optimize data models so DAX expressions will run quickly; demonstrate how to write fast, robust DAX code; and guide you in clearing bottlenecks from existing code. Throughout, they demonstrate DAX at work in both SQL Server and Microsoft Excel environments, empowering you no matter which Microsoft BI or analytics platform you prefer.

À propos de cette édition

• Éditeur: Pearson Education Limited
• Date d'édition: 2015
• ISBN 10: 073569835X
• ISBN 13: 9780735698352
• Reliure: Broché
• Nombre de pages: 592