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SQLBI+ updates in December 2024

We released more content in SQLBI+ with two new sessions: Introducing Visual Calculations in Power BI: This two-hour session introduces the Visual Calculations feature in Power BI, which is still in preview. We plan to update the “Understanding Visual Calculations…  Read more

What we are working on at SQLBI

No, this is not the end-of-the-year blog post about what happened in 2024: There is still more than one month to go! However, we are receiving many requests asking what we are working on at SQLBI. I wanted to write…  Read more

DAX Patterns

Like-for-like comparison

The like-for-like sales comparison is an adjusted metric that compares two time periods restricting the comparison to products or stores with the same characteristics In this example we use the like-for-like technique to compare the sales of Contoso stores that…  More on DAX Patterns


SQLBI Corp.

Optimizing DAX, Second Edition

Optimizing DAX is the state-of-the-art book on optimizing DAX expressions in Power BI and Analysis Services semantic models.
Learn how to locate performance bottlenecks, read the query plan and performance metrics, rewrite the slower part of an expression, and measure the performance improvements. Read more