Question

Is there any advantage in writing calculated columns in Power Pivot instead of in Power Query?
 This question explores the differences and potential benefits of using Power Pivot versus Power Query for creating calculated columns, and how these tools might impact data modeling, performance, and governance workflows in Power BI.

Answer 1

When performance is a concern with larger datasets and calculations that must be a part of the data model, impacting relationships and measures, Power Pivot (DAX Calculated Columns) is perfect.

For data transformation prior to loading into the model, Power Query (M-based Calculations) works best, particularly for basic transformations, data cleaning, and filtering.

For intricate model calculations, use Power Pivot; for data preparation prior to model entry, use Power Query. Data governance and performance are maximized when both tools are used together.