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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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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 IN operator in DAX, which simplifies logical conditions checking whether a certain value belongs to a list of values. Read more
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This article explains how to avoid circular dependency errors that can occur in DAX when two or more entities (calculated columns or calculated tables) reference one another in such a way that the engine cannot compute their value. Read more
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Introducing DAX.do
DAX.do is a new website by SQLBI where you can write and run DAX queries over a sample Contoso database. The goal of DAX.do is purely educational: if you are learning DAX or are merely curious to test a new… Read more
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This article describes how to write DAX measures that compute aggregations or comparisons with past dates without showing or comparing future dates. Read more
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articleUsing CONTAINS in DAX
This article explains how the CONTAINS function works and what can be used as better alternatives in DAX in common use cases. 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 describes how to create a virtual relationship in DAX using the TREATAS function, which is more efficient than approaches based on INTERSECT or FILTER. Read more
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This article analyzes a classic modeling question: is it better to build a model as a regular star schema or as a single table in Power BI? The answer is clear: a star schema is always the best choice. Read more