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Many-to-Many

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Filtering Tables in DAX

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 to get rid of common sense reasoning and learn to

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Using ALLEXCEPT versus ALL and VALUES

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.

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Many-to-many relationships in Power BI and Excel 2016

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.

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Optimize Many-to-Many Calculation in DAX with SUMMARIZE and Cross Table Filtering

PowerPivot and Analysis Services 2012 Tabular do not support many-to-many (M2M) relationship 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 classical M2M relationship between bank accounts and customers.

WHITEPAPER

The Many-to-Many Revolution 2.0

SQL Server Analysis Services introduced modeling many-to-many relationships between dimensions in version 2005. At a first glance, we may tend to underestimate the importance of this feature: after all, many other OLAP engines do not offer many-to-many relationships. Yet, this lack did not limit their adoption and, apparently, only a