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You're reading from  Microsoft Power BI Cookbook. - Second Edition

Product typeBook
Published inSep 2021
PublisherPackt
ISBN-139781801813044
Edition2nd Edition
Tools
Power BI
Concepts
Business Intelligence
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Authors (2):
Gregory Deckler
Gregory Deckler
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Gregory Deckler

Greg Deckler is a 7-time Microsoft MVP for Data Platform and an active blogger and Power BI community member, having written over 6,000 solutions to community questions. Greg has authored many books on Power BI, including Learn Power BI 1st and 2nd Editions, DAX Cookbook, Power BI Cookbook 2nd Edition and Mastering Power BI 2nd Edition. Greg has also created several external tools for Power BI and regularly posts video content to his YouTube channels, Microsoft Hates Greg and DAX For Humans.
Read more about Gregory Deckler

Brett Powell
Brett Powell
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Brett Powell

Brett Powell is the owner of and business intelligence consultant at Frontline Analytics LLC, a data and analytics research and consulting firm and Microsoft Power BI partner. He has worked with Power BI technologies since they were first introduced as the PowerPivot add-in for Excel 2010 and has been a Power BI architect and lead BI consultant for organizations across the retail, manufacturing, and financial services industries. Additionally, Brett has led Boston's Power BI User Group, delivered presentations at technology events such as Power BI World Tour, and maintains the popular Insight Quest Microsoft BI blog.
Read more about Brett Powell

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Capturing Current User Context

The foundation of dynamic user security and visibility in Power BI is the ability to extract the user principal name (UPN) or login credential of the business user connected to content in the Power BI service. The USERPRINCIPALNAME DAX function retrieves this text value and thus enables filter expressions to be applied to the tables of a model in security roles. In addition to RLS roles, which override and impact all DAX measures of a dataset, the UPN or "current user" text value can be used by DAX measures to retrieve the UPN prefix and suffix, or filter other measures.

In this recipe, DAX measures are added to a data model to dynamically retrieve the UPN as well as the UPN's prefix and suffix. Additional detail on authentication in Power BI and the USERNAME function, an alternative dynamic DAX function that also retrieves the UPN in the Power BI service, is also covered.

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Microsoft Power BI Cookbook. - Second Edition
Published in: Sep 2021Publisher: PacktISBN-13: 9781801813044
© 2021 Packt Publishing Limited All Rights Reserved

Authors (2)

author image
Gregory Deckler

Greg Deckler is a 7-time Microsoft MVP for Data Platform and an active blogger and Power BI community member, having written over 6,000 solutions to community questions. Greg has authored many books on Power BI, including Learn Power BI 1st and 2nd Editions, DAX Cookbook, Power BI Cookbook 2nd Edition and Mastering Power BI 2nd Edition. Greg has also created several external tools for Power BI and regularly posts video content to his YouTube channels, Microsoft Hates Greg and DAX For Humans.
Read more about Gregory Deckler

author image
Brett Powell

Brett Powell is the owner of and business intelligence consultant at Frontline Analytics LLC, a data and analytics research and consulting firm and Microsoft Power BI partner. He has worked with Power BI technologies since they were first introduced as the PowerPivot add-in for Excel 2010 and has been a Power BI architect and lead BI consultant for organizations across the retail, manufacturing, and financial services industries. Additionally, Brett has led Boston's Power BI User Group, delivered presentations at technology events such as Power BI World Tour, and maintains the popular Insight Quest Microsoft BI blog.
Read more about Brett Powell

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