Power BI - Questions & Answers | Business Analytics & Intelligence | Processes & Tools | Part 5
Question: State all the commonly used DAX Functions in Power BI. Suggested Answer: Data Analysis Expressions (DAX) is the native formula and query language for Microsoft PowerPivot , Power BI Desktop and SQL Server Analysis Services (SSAS) Tabular models. DAX includes some of the functions that are used in Excel formulas with additional functions that are designed to work with relational data and perform dynamic aggregation. DAX data types Integer Real Currency Date (datetime) TRUE/FALSE (Boolean) String Variant Note: The BLOB (binary large object) data type is managed by the Tabular model but cannot be directly manipulated by DAX expressions. Most Common DAX Function Types with examples 1. Aggregation Functions Calculate sums, averages, counts, etc. SUM() : Total Sales = SUM (Sales[Amount]) // Sum of sales amounts AVERAGE() : Avg Price = AVERAGE (Products[Price]) // Average product price COUNTROWS() : Order Count = COUNTROWS (Orders) // Number of orde...