Dax Formulas For Excel | Practical Powerpivot &

: It bridges the gap between different data worlds, including appendixes for SQL, MDX, and DMX query design.

CALCULATE : The most powerful function, used to modify the filter context of a calculation. Practical PowerPivot & DAX Formulas for Excel

: Practical examples show how to compare current performance against the past and handle tricky calculations like running totals or non-numeric values. : It bridges the gap between different data

If you're looking for the "power" in PowerPivot, these common DAX functions highlighted by expert resources like Microsoft Support and Analytics Vidhya are essential: including appendixes for SQL

RANKX : Automatically ranks items (like products or sales reps) based on a specific value. Practical PowerPivot & DAX Formulas for Excel 2010

SUMX : An "iterator" function that performs a calculation row-by-row before summing the results.