Power BI: Parameter-Driven Analytics

Key insights

• Parameters: small, reusable values you set to change how data loads and displays in Power BI.
  They let reports adapt quickly without rebuilding queries or visuals.
• Query Parameters: used in Power Query to pass values into data source connections and filters.
  Use them to limit rows, swap servers, or speed up refresh by fetching only needed data.
• What-if Parameters: slicer-driven inputs that drive scenario analysis with DAX measures.
  They let analysts test outcomes instantly by changing values in the report interface.
• Report and Dataset Scope: parameters can live at query level or report level and affect refresh and sharing behavior.
  Use parameters in templates to switch environments (dev, test, prod) without editing queries.
• Best Practices: give clear names, set sensible defaults, and restrict allowed values where possible.
  Document parameter purpose and consider refresh and security impacts before deployment.
• Common Use Cases: dynamic filtering, data source switching, performance tuning, and scenario modeling.
  Parameters make reports more flexible, faster, and easier to maintain across environments.

Keywords

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