Join us at FabCon Atlanta from March 16 - 20, 2026, for the ultimate Fabric, Power BI, AI and SQL community-led event. Save $200 with code FABCOMM.
Register now!The Power BI Data Visualization World Championships is back! Get ahead of the game and start preparing now! Learn more
Hello, I want to compare the performance (loading time, memory, CPU cores etc.) between Power Query M vs. DAX calculated column. Is there an easy way to see the performance of running one or the other? Maybe an add-in or something I can use to compare the two? If not, any thoughts on general best practices would be greatly appreciated!!!
Thanks!
Please see this article.
Comparing DAX calculated columns with Power Query computed columns - SQLBI
Pat
My understanding is limited, but I believe Dax calculated columns are preferable to Power Query M merge statements, but otherwise, Power Query M is preferable to Dax.
The Power BI Data Visualization World Championships is back! Get ahead of the game and start preparing now!