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This article describes how to create a virtual relationship in DAX using the TREATAS function, which is more efficient than approaches based on INTERSECT or FILTER. Read more
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ALLSELECTED is an extremely complex function to use in DAX. In this article, we provide an introduction to ALLSELECTED and its main use cases, leaving the most intricate details to more advanced articles. Read more
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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
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RELATED and its companion function RELATEDTABLE, are two common DAX functions that are required when using a row context with relationships. In this article we describe why and when to use these two functions. Read more
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This article describes how to use and interpret the information provided by the Power BI Performance Analyzer, finding the bottlenecks in slow reports. Read more
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Push datasets are an efficient and inexpensive way to implement real-time updates in Power BI reports and dashboards. They can provide better performance and scalability than DirectQuery at the price of a small development cost. Read more
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This article shows how to manipulate the filter context to create a report with the sales made to a specific customer segment, before and after a selected month. Read more
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This article describes what limited relationships are and the differences between regular and limited relationship in Power BI and DAX. Read more
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Using variables in DAX makes the code easier to read, faster, and easier to debug. In this article, we discuss how and when to use variables, along with why they are so important in any DAX expression. Read more
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DAX introduced a GROUPBY function that should replace SUMMARIZE in some scenarios. This article describes how to use GROUPBY in nested grouping scenarios and other improvements. Read more