Topic: Power BI
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If you do not have a full month with data, comparisons such as year-over-year (YOY) might require particular filters in order to do a like for like comparison in DAX. This article describes how to write DAX expressions comparing equivalent… Read more
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This article analyzes how to efficiently work with events that lasts over time, such as the duration of an order considering the distance between order date and ship date. Read more
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In Power BI Desktop (as of February 2016) you have to use DAX to apply calculations over dates (such as year-to-date, year-over-year, and others), but you do not have the Mark as Date Table feature. This article describes which scenarios… Read more
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This article shows a technique in DAX to compute the sales volume of products that were available right from the beginning of a selected time period, ignoring products introduced afterwards. Read more
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This article describes the reasons why an Excel pivot table may be slow when using the Analyze in Excel feature of Power BI. Read more
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This article explains the roles of the formula engine and of the storage engine used to execute DAX queries. Read more
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This article provides a complete explanation of the behavior of the ALLxxx functions in DAX. When used as filters in CALCULATE, ALLxxx functions might display unexpected behaviors. Read more
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A Tabular model can define a measure as a Key Performance Indicator (KPI), thus providing a visual indicator for status and trend. This article describes in detail the KPI settings needed to get the best result using Power BI and… Read more
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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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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