Toronto, ON, CAChoosing between DISTINCT and VALUES in DAX
Marco Russo & Alberto FerrariWhen should you use DISTINCT over VALUES in DAX? Here is how to write resilient measures that survive bad data and model changes. Read more
Understanding how DAX evaluates IF statements
In this article, we examine the details of executing DAX code, with a focus on how the IF function is implemented in various scenarios. Read more
Dec 2-4 - Amsterdam
Oct 1-3 - London
Oct 28-30 - Lugano
Video Training
Introducing DAX Video CourseFree
Controlling empty or multiple selections in calculation groups
This article describes how to control the execution of DAX code when there are either multiple or empty selections of calculation items in calculation groups. Read more
Understanding the “can’t determine relationship between the fields” error in Power BI
This article explains why you might encounter a curious error when placing columns from unrelated tables in a Power BI matrix. Read more
DAX Patterns
Comparing different time periods
This pattern is a useful technique to compare the value of a measure in different time periods For example we can compare the sales of the last month against a user-defined period The two time periods might have a different… 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