The DAX language is very powerful. Handy to compute the complex business values you need, but oh so frustrating if the DAX expression doesn't do what you expected it to do.

In this session several DAX expressions will be shown which do not always do what most Power BI users expect. Step by step these DAX expressions will be dissected and the evaluation context rules will be made clear such that you understand why the expressions behave different then expected.

This session aims at Power BI data model developers which have already a basic knowledge on writing DAX expressions and want to become more experienced in understanding the DAX evaluation context and extended tables.