Topic: DAX
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This article describes a reference Date table in DAX using a Power BI template. The same technique can be used in Analysis Services models. Download the latest version of the template in the Dax Date Template page. 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 month we published a second draft of the Window functions in DAX whitepaper for the SQLBI+ subscribers. After the first draft we published in January 2023, we added new sections and updated others. We completely rewrote the “apply semantics”… Read more
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Learn how to use calculation groups and how they work internally. The whitepaper is a companion to the related SQLBI+ video course. Read more
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GROUPBY and SUMMARIZE seem similar, but they differ in both performance and functionalities. Choose the right one depending on specific scenarios! Watch now
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How to apply dynamic security roles in a hierarchical organization to minimize the maintenance effort on the security configuration and obtain the best performance at query time. Watch now
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How to implement the comparison between school terms. The same technique can be applied to any arbitrary time periods that do not match regular months or quarters in a calendar, such as seasons or campaigns. Watch now
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Choose between many-to-many relationships and DAX code to filter the most relevant items using another slicer. Indeed, calculation groups cannot use relationships! Watch now
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This article describes how to apply dynamic security roles in a hierarchical organization to minimize the maintenance effort on the security configuration and obtain the best performance at query time. Read more
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Both GROUPBY and SUMMARIZE are useful functions to group by columns. However, they differ in both performance and functionalities. Knowing the details lets developers choose the right function for their specific scenario. Read more
