The difference between ALL and ALLSELECTED DAX functions can be relatively confusing when you’re starting out with Power BI. In this tutorial, I’ll quickly go over the main differences between those two commonly used DAX functions and their respective usages in your Power BI reports. Let’s take a look at this example. I’ll use this
Tag: filter context
I have found out that most people get confused in regards to understanding how DAX works in row context. This is because row context can be quite complicated and unnecessarily so. So we’re going to touch on row context throughout this article. The way I think about row context is through iterations or iterating functions.
Filter context is one of the major topics that any Power BI user should initially learn about, especially if you want your DAX calculations to work effectively. In this article, I will run through the filter context. Every DAX formula is calculated in a two-step process. DAX Formula: A Two-Step Process The first step is
The most important concept in understanding DAX is context. There are three main types of context: the evaluation context, the filter context, and the row context. When DAX calculates something in Power BI, it works via a two-step process. At first, it evaluates the context it is currently in. Once it has done that, it
A really common calculation that we require quite often is to calculate the % of a total amount. This is great to quickly show where the larger portion of results sit versus the entire population. Completing this in Power BI does not require much written code, but it does require some understanding. It will generally be