Introduction In this article, I'll explain the use of the RANKX function available in DAX. The RANKX is a sortation function which is capable of performing a quite complex sorting and ranking based on the groups and values available in the dataset. It returns the ranking of a particular number available in each row of […]
Introduction Period-over-period is an analysis technique in business that measures some value in the present and compares it to the same measurement in a comparable period of time in the past. The goal is to adjust the slice of the past you are viewing, so the same amount of time has passed in the two […]
In the first two articles in this series on creating DAX formulae, Andy Brown of Wise Owl Training showed how to create calculated columns and measures. In this third article, he turns his attention to two of the most important DAX functions (CALCULATE and VALUES), showing how and when to use them. If DAX knowledge can be compared to a heavily fortified castle, the CALCULATE function is the drawbridge giving access to it.
In the first article in this series, Andy Brown demonstrated how to create calculated columns in Power BI using the DAX language. This second article in the series explains what measures are, and how you can use DAX to create measures within Power BI. The formulae in the article apply equally well to PowerPivot and Analysis Services Tabular Model.