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.
8. Optimize Model Performance
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