This article describes a number of techniques available to filter tables in DAX, showing possible pitfalls that you can avoid once you know them, in particular using bidirectional filters. One of the hardest things to do, when learning DAX, is…  Read more

This article describes the semantic difference between ALLEXCEPT and the joint use of ALL and VALUES, showing practical examples of the different results in Power BI and SSAS 2016.  Read more

The new DAX available in Excel 2016 and the data model in Power BI and Analysis Services 2016 offer tools to manage many-to-many relationships in a more efficient way than previous version, as described in this article.  Read more

PowerPivot and Analysis Services 2012 Tabular do not support many-to-many (M2M) relationships directly in the data model. However, you can obtain the desired result from a many-to-many relationship by writing a DAX expression. For example, consider the classic M2M relationship…  Read more

This white paper explores many different uses of many-to-many relationships in both SQL Server Analysis Services Multidimensional and Tabular models.  Read more