Microsoft Power BI Data Analyst Certification Companion: Preparation for Exam PL-300

© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2023

J. JollyMicrosoft Power BI Data Analyst Certification CompanionCertification Study Companion Serieshttps://doi.org/10.1007/978-1-4842-9013-2_8

8. Optimize Model Performance

Jessica Jolly¹  

(1)

Evanston, IL, USA

 

When you first start writing DAX, you are bound to write some “ugly baby” DAX—DAX only an author can love! And that is okay—at the beginning. There’s an expression “Perfect is the enemy of done,” which means don’t let the quest for perfect DAX get in the way of writing DAX. Good DAX takes practice and some tools, one of which is built into the Power BI Desktop.

Measuring Report Performance

The first concept to grasp is that every visual creates a DAX ...