Topic: Filter Context
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This video explains how to use KEEPFILTERS to intersect instead of overriding an existing filter context in DAX. Using FEEPFILTERS simplifies the code and improves performance. Watch now
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Context transition is one of the most obscure topics for DAX newbies. In this article we introduce context transition, its effects, and how to leverage it rather than be scared of it. Read more
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CALCULATE is the most powerful and complex function in DAX. In this article, we provide an introduction to CALCULATE, its behavior, and how to use it. Read more
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Understanding the difference between a row context and a filter context is the first and most important concept to learn to use DAX correctly. This article introduces the filter context. Read more
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This article describes how to display the filter context applied to a calculation using a special DAX measure in Power BI Tooltips. Read more
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SUMMARIZE is a very powerful and very complex function to use. This article describes its internal behavior, and provides guidance on how to use it. Read more
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In Power BI Desktop (as of February 2016) you have to use DAX to apply calculations over dates (such as year-to-date, year-over-year, and others), but you do not have the Mark as Date Table feature. This article describes which scenarios… Read more
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This article provides a complete explanation of the behavior of the ALLxxx functions in DAX. When used as filters in CALCULATE, ALLxxx functions might display unexpected behaviors. Read more
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ALLSELECTED is a powerful function that can hide several traps. This article is an in-depth analysis of the behavior of ALLSELECTED, explaining shadow filter contexts, what they are and how they are used by ALLSELECTED. Read more
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This article explains how the context transition interacts with the filter arguments of a CALCULATE function in DAX. This is important in order to avoid unexpected results with complex calculations made in filter arguments. Read more