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article –

Naming temporary columns in DAX

This article describes a naming convention for temporary columns in DAX expressions to avoid ambiguity with the measure reference notation.  Read more

article –

Blank row in DAX

There are two functions in DAX that return the list of values of a column: VALUES and DISTINCT. This article describes the difference between the two, explaining the details of the blank row added to tables for invalid relationships.  Read more

book –

The Definitive Guide to DAX – 2nd Edition

The Definitive Guide to DAX (Business intelligence with Microsoft Excel, SQL Server Analysis Services, and Power BI) is the most comprehensive and authoritative guide to Microsoft’s DAX language for business intelligence and analytics. While other books cover only the basics,…  Read more

video –

Deep dive into DAX evaluation context

Ever struggled with a formula in DAX that does not compute what you want? It has happened to us many times, and we know that the problem is ALWAYS related to the evaluation context. Filter context, row context, and context…  Watch now

DAX 101 –

Year-to-date filtering weekdays in DAX

Time intelligence functions oftentimes hide an automatic ALL statement meant to make time intelligence calculations easier. This article describes this behavior and what to do in case it ends up breaking your calculation.  Read more