Introduction
DAX (Data Analysis Expressions) lets you create powerful calculations in Power BI, helping you analyze and visualize your data in new ways.
For example, imagine you need to quickly find year-over-year sales growth or count unique customers in your reports. DAX makes these tasks simple and efficient, even when your data is complex or contains blanks.
In this module, you learn how to:
- Write DAX formulas for calculated tables, columns, and measures.
- Work with different data types and handle blank values.
- Use various DAX functions, including those similar to Excel.
- Apply operators and understand how they work together.
- Improve your formulas with variables for better performance and readability.
After finishing this module, you’ll know how to build and optimize DAX calculations in Power BI, making your reports more dynamic and insightful.