Now expanded and updated with modern best practices, this is the most complete guide to Microsoftโs DAX language for business intelligence, data modeling, and analytics. Expert Microsoft BI consultants Marco Russo and Alberto Ferrari help you master everything from table functions through advanced code and model optimization. Youโll learn exactly what happens under the hood when you run a DAX expression, and use this knowledge to write fast, robust code. This edition focuses on examples you can build and run with the free Power BI Desktop, and helps you make the most of the powerful syntax of variables (VAR) in Power BI, Excel, or Analysis Services. Want to leverage all of DAXโs remarkable capabilities? This no-compromise โdeep diveโ is exactly what you need.
Perform powerful data analysis with DAX for Power BI, SQL Server, and Excel
ยท Master core DAX concepts, including calculated columns, measures, and calculation groups
ยท Work efficiently with basic and advanced table functions
ยท Understand evaluation contexts and the CALCULATE and CALCULATETABLE functions
ยท Perform time-based calculations
ยท Use calculation groups and calculation items
ยท Use syntax of variables (VAR) to write more readable, maintainable code
ยท Express diverse and unusual relationships with DAX, including many-to-many relationships and bidirectional filters
ยท Master advanced optimization techniques, and improve performance in aggregations
ยท Optimize data models to achieve better compression
ยท Measure DAX query performance with DAX Studio and learn how to optimize your DAX