DAX

DAX (Data Analysis Expressions) is a formula language used primarily in Microsoft Power BI, Analysis Services, and Power Pivot in Excel for data modeling and analysis. It enables users to create custom calculations, aggregations, and business logic on tabular data models, similar to Excel formulas but optimized for relational data and time intelligence. DAX is essential for building interactive reports and dashboards by defining measures, calculated columns, and tables.

Also known as: Data Analysis Expressions, DAX formulas, Power BI DAX, Analysis Services DAX, DAX language

🧊Why learn DAX?

Developers should learn DAX when working with Microsoft's business intelligence tools like Power BI or Analysis Services to perform advanced data analysis and create dynamic reports. It is particularly useful for scenarios involving time-based calculations (e.g., year-over-year growth), complex aggregations, and data modeling in tabular formats. Mastery of DAX enhances the ability to deliver insights from large datasets in enterprise environments.

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Learning Resources

Microsoft DAX documentation

SQLBI DAX Guide

Power BI DAX tutorial on YouTube

The Definitive Guide to DAX by Microsoft Press

Related Tools

Power Bi Excel Power Pivot Tabular Models Business Intelligence Data Modeling

Alternatives to DAX

Mdx Sql Python Pandas

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