DAX Studio
DAX Studio is a tool to write, execute, and analyze DAX queries in Power BI. It provides a set of great features to help developers to create, test and optimize DAX formulas. DAX Studio has a Query Editor and option to execute and view results. DAX Studio is integrated with PowerBI and it connects directly with PowerBI mnodels and allows to work seemlessly with PowerBI datasets.
To write a Query or calculation in DAX Studio, it starts with ‘EVALUATE’ as in the example below.
EVALUATE {SUM('Order Data'[Cost])}
Example of DAX Studio Editor for selecting all rows from a table:
DAX Studio is a downloadable open source tool and the UI looks as above with options to write queries or expression like DAX measures and run then. It has the Result View window at the bottom to review the results. The tool can be connected to different datasources.
Creating measures using DAX
DAX (Data Analysis Expressions) Measures in Power BI are standard aggregation functions or dynamic custom expressions defined with the DAX formula language. Using this formula language, you can calculate, combine, and filter data that can return one or more values. DAX Measures are dynamic and user-defined formulas where results change depending on context. This article discusses the DAX Measures in Power BI, how to create and edit, and how to use them in Power BI Visualization reports.