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article –

Displaying Nth Element in DAX

This article describes how to create a measure displaying the name or value of an element that has a specific ranking, with different option for managing ties.  Read more

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Understanding DAX Auto-Exist

This article describes the behavior of auto-exist in DAX, explaining the side effects of combining slicers on columns of the same table in Power BI.  Read more

blog post –

DAX Guide – the reference I had been wanting

If you have read the book Alberto and I wrote, “The Definitive Guide to DAX” then by looking at the title you might think that this post is about the book. Not this time. I am talking about the new…  Read more

blog post –

DAX Studio and Power BI diagnostic port

DAX Studio connects to a Power BI Desktop model using a technique that was not officially supported until a few months ago. This changed when the “diagnostic port” was documented in this article of the official documentation:  Read more

blog post –

Dates differences between Excel and DAX

DAX supports dates starting in 1900 and while teaching DAX I always explain that DAX manages dates like Excel, which is the reason why these limitations exist. Actually, this is true – but answering to a comment today I realized…  Read more

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Side effects of the Sort By Column setting in DAX

The Sort By Column feature in Power BI causes side effects that are important to know when writing a DAX formula. This article explains these side effects and how to write correct DAX code to avoid getting incorrect results.  Read more

video –

Power BI DAX optimization examples

How can you optimize your DAX expressions? In this session, we’ll analyze DAX expressions and Tabular models, then utilize DAX Studio and the VertiPaq model to explore how to optimize them. While most optimizations are the direct application of best…  Watch now