Introducing DAX
The DAX language is the formula language used to create calculations in Analysis Services, Power BI Desktop, and Power Pivot for Excel. DAX formulas include functions, operators, and values to perform basic calculations on data in tables and columns. For tabular models authored using Visual Studio 2019, DAX formulas can be used to create calculated columns, measures, tables, and row filters. The flexibility and capability of the DAX formula language is one of the most powerful aspects of Analysis Services. A firm understanding of DAX will allow you to tackle any set of user requirements using an optimal approach.
Note
Review the following documentation for the complete guide to the extensive DAX functions reference library: https://docs.microsoft.com/en-us/dax/dax-function-reference.
The model author will define the DAX formula for a calculated column, measure, and table using the formula bar in Visual Studio. The formula for a row filter will be defined in...