Should you use DAX user-defined functions (UDF) or calculation groups? Learn when to use either, and how they complement each other in the design of a semantic model in Power BI.
Article and download: https://sql.bi/894313?aff=yt
How to learn DAX: https://www.sqlbi.com/guides/dax/?aff=yt
The definitive guide to DAX: https://www.sqlbi.com/books/the-definitive-guide-to-dax-third-edition/?aff=yt
