Power BI DAX Overview

Power BI DAX (Data Analysis Expressions) is a formula language used for creating custom calculations in Power BI data models. It enables users to perform complex data analysis tasks, such as aggregations, relationships, and time intelligence functions.

Key Features of DAX

• Powerful Calculation Capabilities 📊
  DAX allows you to build formulas that calculate values based on your data, such as SUM, AVERAGE, CALCULATE, and FILTER.
• Context Awareness 🔄
  DAX formulas operate in either row context or filter context, making them flexible for different analytical scenarios.
• Time Intelligence Functions ⏳
  Functions like DATEADD, YOY, and SAMEPERIODLASTYEAR help analyze trends over time.

Learning Resources

• Power BI Official Documentation for in-depth guides
• DAX Formula Syntax Examples to practice writing calculations
• Power BI Community Tutorials for real-world use cases

Example Use Cases

• Calculating sales growth with DIVIDE and CALCULATE
• Creating dynamic KPIs using IF and SWITCH
• Building custom measures for data analysis

For more details on DAX functions, check out our DAX Function Reference Guide. 📘