Power BI offers several options to create filters and slicers in a report. However, it is not possible to define a default filter at the model level so that every new report on a dataset automatically applies that filter. The…  Read more

Great news! Just one year after releasing the second edition of The Definitive Guide to DAX, we just published a new website, a new book, and a new collection of videos: the second edition of DAX Patterns! DAX Patterns is…  Read more

The LOOKUPVALUE function retrieves values from a table in a simple way, but it involves a hidden level of complexity. This article provides full coverage of the LOOKUPVALUE internals, alongside several performance considerations.  Read more

Tabular models (including Power BI) require marking the Date table as a date table to get appropriate results with time intelligence calculations. This article explains why this setting is required.  Read more

Learn how to create your first calculation group in Power BI Desktop using Tabular Editor in this step-by-step video.  Watch now

Something really big is happening! The July 2020 version of Power BI Desktop allows you to create calculation groups in Power BI Desktop, thanks to the new “external tools” feature that enables the integration with Tabular Editor. We had been…  Read more

This article shows the reader how to use LOOKUPVALUE, which is a handy function for any developer to have in their toolbelt.  Read more

This article describes the differences between HASONEVALUE and ISINSCOPE, which are two useful DAX functions to control the filters and the grouping that are active in a report.  Read more

DAX is simple, but it is not easy. I cannot remember how many times I read this sentence on social media, attributed to me. For good reason: I have repeated this sentence at almost every classroom course I delivered over…  Read more

This article describes how to use DAX calculated columns to sort names that look like duplicates at a certain level of a hierarchy, but are unique when considering their full path within the hierarchy.  Read more