Data Analysis Expressions (DAX) Reference
Data Analysis Expressions (DAX) is a library of functions and operators that can be combined to build formulas and expressions in Power BI Desktop, Azure Analysis Services, SQL Server Analysis Services, and Power Pivot in Excel.
Get detailed information for any of the over 200 DAX functions.
Learn DAX videos
Learn quickly with introductory and advanced videos.
Get the big picture. This article describes the most essential concepts in DAX.
Learn about syntax and expression requirements in DAX.
Learn how operators are used in DAX expressions that compare values, perform arithmetic calculations, or work with strings.
Use query tools to create an evaluate statement that queries your data model.