Topic: DAX
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This article describes how to import into DAX Studio the performance metrics that can be exported by the Power BI Performance Analyzer, simplifying the analysis of slower queries in a report. Read more
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This article shows two techniques based on calculation groups: how to implement dynamic format strings in regular measures, and how to perform weight conversion on the fly. Read more
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DAX calculations can leverage relationships present in the data model, but you can obtain the same result without physical relationships, applying equivalent filters using specific DAX patterns. This article show a more efficient technique to apply virtual relationships in DAX… Read more
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This article describes the behavior of the DAX functions that manipulate sets; they are useful to create queries and sometimes also to author measures. Read more
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In PowerPivot for Excel 2010 it is possible to import an Excel table in a PowerPivot data model by using the Linked Table feature. Excel 2013 expands this capability by Read more
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This article explains why in many cases, MAX should be used instead of LASTDATE to search for the last date in a time period using DAX. Read more
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The DAX language provides several Time Intelligence functions that simplify writing calculations such as year-to-date (YTD), year-over-year (YOY) and so on. However, if you have a special calendar structure such as a 4-4-5 weeks’ calendar, you need to write your… Read more
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This article describes how to use calculation groups to dynamically replace only a partial expression in a complex DAX calculation. Read more
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This article explains the behavior of LASTNONBLANK, LASTNONBLANKVALUE, and similar DAX functions, also providing patterns for performance optimization. Read more
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The LOOKUPVALUE function retrieves values from a table in a simple way, but it involves a hidden level of complexity. This article provides full coverage of the LOOKUPVALUE internals, alongside several performance considerations. Read more