How to Use DAX (Data Analysis Expressions) Functions
DAX expressions (Data Analysis Expressions) is the formal language for writing formulas in Power Bi, Power Pivot and in Excel data models. This language is made up of functions, constants, and operators.
You can use DAX to define custom calculations for Calculated Columns and for Measures (also known as calculated fields). It also allows you to calculate values, create relationships between tables, and more.






