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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
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This article introduces the new calendar-based time intelligence functions in DAX, available in preview from the September 2025 release of Power BI. Read more
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User-defined functions are a new and exciting feature in DAX. In this article, we outline the key concepts to understand before using them in Power BI projects. Read more
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This article is about useful concepts and scenarios for integrating AI and AI agents in BI development, with specific examples for Power BI. Read more
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Overview of the various capabilities of AI workflows and agentic development for Power BI. The focus is on AI for BI professionals, not conversational BI for data consumers. Read more