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The LINESTX DAX function simplifies the calculation of linear regressions. This article explains the correct way to manage its results efficiently. Read more
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Power BI introduced dynamic format strings in May 2023. In this article, we briefly introduce this functionality and then dive into a few technical details of its implementation. Read more
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This article describes how to use the Group By Columns property to store the slicer selection by using the same column used in a SWITCH function to optimize the query performance. Read more
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This article describes how to optimize a text search operation in DAX. This technique can improve the performance of Power BI reports that use the contains condition in the filter pane or the filter mode of the Smart Filter Pro… Read more
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The second edition of the Optimizing DAX video course is available: new content, a new book, and some on the behind-the-scenes of the project. Read more
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This article describes the possible rounding differences that can appear in DAX. They are related to the data types and the operation being performed: knowing these details helps you write more robust DAX formulas and avoid errors in comparisons. Read more
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This article introduces the Data Ecosystem, an innovative evolution of the modern data warehouse architecture. By combining data lakes, rivers, glaciers, and seas, it offers enhanced scalability, flexibility, and efficiency for today’s data-driven organizations. Read more
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The SWITCH function in DAX has been optimized over the years, and it is helpful to know what makes the optimization work best. Read more
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The blank value in DAX is a special value requiring particular attention in comparisons. It is not like the special null value in SQL, and it could appear in any conversion from a table expression. This article explores in details… Read more
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This article describes how to implement a DAX measure to run faster than what you get from the built-in fusion optimization. Read more