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In mid-January 2026, many Power BI Desktop users began noticing a strange visual regression: several icons in the interface—including the Data, Model, and DAX icons—appeared as solid black shapes instead of their normal outlines. The issue appeared suddenly, even on… Read more
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It is time for our annual review of what happened in the DAX and SQLBI worlds, and what we should expect in 2026! Read more
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This article analyzes the performance of regular versus limited relationships in DAX to understand the implications of using limited relationships. Read more
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This article describes the data model and DAX measures to analyze the effectiveness of campaigns, by separating attributed sales (directly linked to a campaign) from influenced sales (all sales of products participating in campaigns, regardless of attribution). Read more
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Three months ago, Microsoft introduced the User-Defined Functions (UDFs) in the DAX language. From the first day, https://daxlib.org has been available to share libraries of functions with the Power BI community. We published DAX Lib with a low profile because… Read more
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Should you use RANK or stick with RANKX? In which scenarios is one better than the other? This article provides an in-depth analysis to help readers make informed choices. Read more
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This article explains the distinction between model-dependent and model-independent DAX user-defined functions, highlighting how dependencies impact portability and maintenance, and provides guidance on avoiding hidden dependencies and adopting proper naming conventions. Read more
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This article outlines the process of creating a measure to identify the top 10 products by sales each year. Read more
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This article describes when to use VALUES in a table grouped by SUMMARIZE, then goes on to explain why you cannot however use VALUES with SUMMARIZECOLUMNS. Read more
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Value filter behavior is a setting in Power BI semantic models that controls how filters are combined in SUMMARIZECOLUMNS. This article explains how it works and suggests its best configuration. Read more