[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-detail-40020-en":3,"doc-seo-40020-105":30,"detail-sidebar-cat-0-en-105":92},{"code":4,"msg":5,"data":6},0,"success",{"doc_id":7,"user_id":8,"nickname":9,"user_avatar":10,"doc_module":4,"category_id":11,"category_name":12,"doc_title":13,"doc_description":14,"doc_content":15,"file_id":16,"file_url":17,"file_type":18,"file_size":19,"view_count":20,"is_deleted":4,"is_public":21,"is_downloadable":21,"audit_status":21,"page_count":22,"language":23,"language_code":24,"site_id":25,"html_lang":24,"table_of_contents":26,"faqs":27,"seo_title":13,"seo_description":14,"update_tm":28,"read_time":29},40020,1374391975076,"Riley","https://ap-avatar.wpscdn.com/avatar/14000253ca4ec9f6853?x-image-process=image/resize,m_fixed,w_180,h_180&k=1783305029341752051",6,"Technology","The Definitive Guide to DAX Business Intelligence for Microsoft","A comprehensive second-edition guide to DAX for business intelligence using Microsoft Power BI, SQL Server Analysis Services, and Excel. Covering foundational concepts such as data models, relationships, and the functional nature of DAX, it progresses through evaluation contexts, CALCULATE/CALCULATETABLE, variables, iterators, and time intelligence. Advanced chapters address calculation groups, filter and row context, hierarchies, query authoring, engine internals, VertiPaq optimization, DAX query plans, and performance tuning.","The Definitive Guide to DAX: Business intelligence with Microsoft Power BI, SQL Server Analysis Services, and Excel  \nSecond Edition  \nMarco Russo and Alberto Ferrari  \nPublished with the authorization of Microsoft Corporation by:  \nPearson Education, Inc.  \nCopyright © 2020 by Alberto Ferrari and Marco Russo  \nAll rights reserved. This publication is protected by copyright, and permission must be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permissions, request forms, and the appropriate contacts within the Pearson Education Global Rights & Permissions Department, [please visit www.pearsoned.com/permissions/. No patent](please visit www.pearsoned.com/permissions/. No patent)[ ](please visit www.pearsoned.com/permissions/. No patent)[liability is assumed with respect to the use of the information contained herein. Although](liability is assumed with respect to the use of the information contained herein. Although)[ ](liability is assumed with respect to the use of the information contained herein. Although)every precaution has been taken in the preparation of this book, the publisher and author assume no responsibility for errors or omissions. Nor is any liability assumed for damages resulting from the use of the information contained herein.  \nISBN-13: 978-1-5093-0697-8  \nISBN-10: 1-5093-0697-8  \nLibrary of Congress Control Number: 2019930884 ScoutAutomatedPrintCode  \nTrademarks  \nMicrosoft and the trademarks listed at [http://www. microsoft.com on](http://www. microsoft.com on) the “Trademarks”webpage are trademarks of the Microsoft group of companies. All other marks are property of their respective owners.  \nWarning and Disclaimer  \nEvery effort has been made to make this book as complete and as accurate as possible, but no warranty or fitness is implied. The information provided is on an “as is” basis. The authors, the publisher, and Microsoft Corporation shall have neither liability nor responsibility to any person or entity with respect to any loss or damages arising from the information contained in this book.  \nSpecial Sales  \nFor information about buying this title in bulk quantities, or for special sales opportunities (which may include electronic versions; custom cover designs; and content particular to your business, training goals, marketing focus, or branding interests), please contact our corporate sales department at [corpsales@pearsoned.com](corpsales@pearsoned.com)[ ](corpsales@pearsoned.com)or (800) 382-3419.  \nFor government sales inquiries, [please contact governmentsales@pearsoned.com](please contact governmentsales@pearsoned.com). For questions about sales outside the U.S., please contact [intlcs@pearson.com](intlcs@pearson.com).  \nEDITOR-IN-CHIEF  \nBrett Bartow  \nEXECUTIVE EDITOR  \nLoretta Yates  \nDEVELOPMENT EDITOR  \nMark Renfrow  \nMANAGING EDITOR  \nSandra Schroeder  \nSENIOR PROJECT EDITOR  \nTonya Simpson  \nCOPY EDITOR  \nChuck Hutchinson  \nINDEXER  \nKen Johnson  \nPROOFREADER  \nAbigail Manheim  \nTECHNICAL EDITOR  \nDaniil Maslyuk  \nEDITORIAL ASSISTANT  \nCindy Teeters  \nCOVER DESIGNER  \nTwist Creative, Seattle  \nCOMPOSITOR  \ncodeMantra  \nContents at a Glance  \nForeword xvii  \nIntroduction to the second edition xx  \nIntroduction to the first edition xxi  \nCHAPTER 1 What is DAX? 1  \nCHAPTER 2 Introducing DAX 17  \nCHAPTER 3 Using basic table functions 57  \nCHAPTER 4 Understanding evaluation contexts 79  \nCHAPTER 5 Understanding CALCULATE and CALCULATETABLE 115  \nCHAPTER 6 Variables 175  \nCHAPTER 7 Working with iterators and with CALCULATE 187  \nCHAPTER 8 Time intelligence calculations 217  \nCHAPTER 9 Calculation groups 279  \nCHAPTER 10 Working with the filter context 313  \nCHAPTER 11 Handling hierarchies 345  \nCHAPTER 12 Working with tables 363  \nCHAPTER 13 Authoring queries 395  \nCHAPTER 14 Advanced DAX concepts 437  \nCHAPTER 15","cbCaioY0qdDydb1M","https://ap.wps.com/l/cbCaioY0qdDydb1M","pdf",13659548,5,1,768,"English","en",105,"# Contents at a Glance\n## Foreword\n## Introduction to the second edition\n## Introduction to the first edition\n## Chapter 1 What is DAX?\n## Chapter 2 Introducing DAX\n## Chapter 3 Using basic table functions\n## Chapter 4 Understanding evaluation contexts\n## Chapter 5 Understanding CALCULATE and CALCULATETABLE\n## Chapter 6 Variables\n## Chapter 7 Working with iterators and with CALCULATE\n## Chapter 8 Time intelligence calculations\n## Chapter 9 Calculation groups\n## Chapter 10 Working with the filter context\n## Chapter 11 Handling hierarchies\n## Chapter 12 Working with tables\n## Chapter 13 Authoring queries\n## Chapter 14 Advanced DAX concepts\n## Chapter 15 Advanced relationships\n## Chapter 16 Advanced calculations in DAX\n## Chapter 17 The DAX engines\n## Chapter 18 Optimizing VertiPaq\n## Chapter 19 Analyzing DAX query plans\n## Chapter 20 Optimizing DAX\n# Index","[{\"question\":\"What platforms does the book focus on for DAX business intelligence?\",\"answer\":\"It targets Microsoft Power BI, SQL Server Analysis Services, and Excel as the main environments for applying DAX in business intelligence solutions.\"},{\"question\":\"Which core DAX concepts are introduced before advanced topics?\",\"answer\":\"The guide starts with the data model, relationship direction, and the functional nature of DAX, then moves through evaluation contexts, CALCULATE/CALCULATETABLE, variables, and iterators.\"},{\"question\":\"How does the book help with DAX performance optimization?\",\"answer\":\"It includes dedicated coverage of time intelligence and advanced calculations, followed by 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