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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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At SQLBI, Alberto Ferrari and I spend most of our time sharing our knowledge and expertise in DAX. We have been doing this for years, navigating through conferences, workshops, and videos, encountering many individuals – from eager beginners to seasoned… 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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Our end-of-the-year tradition is to recap what happened in the DAX and SQLBI world and look at what is coming next. 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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The DirectQuery over SQL section of the Optimizing DAX video course is now available! In May 2023, we released the second edition of Optimizing DAX, which was completed for the first three sections: Core Concepts, Formula Engine, and VertiPaq. The… 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