Topic: DAX
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The context transition in DAX is the transformation of row contexts into an equivalent filter context performed by CALCULATE and CALCULATETABLE. Managing this behavior is the next step in learning DAX once you understand row context and filter context. This… Read more
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DAX creates a blank row to guarantee that results are accurate even if a regular relationship is invalid. The blank row is not created for limited relationships. This article shows the effect of not having a blank row in your… Read more
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When you apply row-level security to a semantic model, there are limitations in using the USERELATIONSHIP function. This article shows the issues, provides a workaround, and its restrictions. Read more
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This article describes how to optimize time intelligence calculations with DirectQuery over SQL in Power BI by avoiding time intelligence DAX functions. Read more
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This article describes the difference between the results of DATEADD and PARALLELPERIOD in DAX. These differences also impact many other time intelligence functions that are syntax sugar of these two. Read more
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This article describes the use of the tuple syntax in DAX expressions to simplify comparisons involving two or more columns. Read more
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This article describes how to join tables in DAX when there are no relationships in the data model. The data lineage plays an essential role in this scenario. Read more
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This article describes the practical uses of NATURALLEFTOUTERJOIN and NATURALINNERJOIN in DAX. These functions are not commonly used in DAX because they do not have the same flexibility as the corresponding concepts in SQL. Read more
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This article describes how to correctly shape a data model and prepare data to use a Sankey Chart as a funnel, considering events related to a customer (contact, trial, subscription, renewal, and others). Read more
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This article shows how to compute ratios when row-level security hides some of the data. If the percentage also includes the hidden rows in the comparison, you should customize the data model and the measures involved to get the right… Read more