Topic: Tabular
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This article describes the types of relationships available in Power BI and Analysis Services, clarifying the differences in cardinality and filter propagation of physical relationships. Read more
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Though you can build real-time reports with DirectQuery, push datasets offer a more scalable, economical, and effective solution especially when combined with an Import model already in place. In this article we introduce the architecture of push datasets. Read more
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In this article we perform a performance comparison between header/detail models and star schemas. Building a star schema might require a few ETL steps and some coding. Nonetheless, it is always the best modeling option. Read more
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The Detail Rows Expression in a Tabular model provides the user with control over the drillthrough results obtained by showing details of a measure. This article describes typical DAX expressions you can use in this property. Read more
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This article describes how to use the detail rows expression of a measure to obtain the equivalent of creating table functions in DAX. This allows the reusing of a table expression in multiple CALCULATE filters. Read more
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Tabular models (including Power BI) require marking the Date table as a date table to get appropriate results with time intelligence calculations. This article explains why this setting is required. Read more
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ALLEXCEPT is a handy DAX function to retrieve all the columns of a table except for some. When used as a CALCULATE modifier, its behavior is less intuitive and might result in inaccurate measures. In this article, we elaborate on… Read more
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The new video course to create enterprise-level solutions with Power BI and Analysis Services is available! Read more
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This article describes how blank values considered in a DAX conditional expression can affect its query plan and how to apply possible optimizations to improve performance in these cases. Read more
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You can implement the calculation of stock inventory over time in several ways in DAX. The xVelocity technology in Power Pivot and Analysis Services Tabular is so fast that you might consider both dynamic calculation and snapshot-based calculation, depending on… Read more