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| Feature | Power Query | Excel Formulas | VBA Macros | | :--- | :--- | :--- | :--- | | | Moderate | Easy | Steep | | Handling 1M+ rows | Yes | No (will crash) | Yes, but slow | | Auditability | Step-by-step visual | Cell-by-cell | Debugger required | | Refresh Speed | Fast (in-memory) | Slow (recalculates all) | Variable | | Best for... | Data cleaning & prep | Calculations & lookups | Automation & UI | In the blink of an eye, Power Query
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