📊 𝗜𝗻𝘁𝗲𝗿𝘃𝗶𝗲𝘄𝗲𝗿: How do you create a running total in SQL?

👋 𝗠𝗲 Use the WINDOW FUNCTION with OVER() clause:

  Date,
  Amount,
  SUM(Amount) OVER (ORDER BY Date) AS RunningTotal
FROM Sales;

🧠 Logic Breakdown: 
- SUM(Amount) → Aggregates the values 
- OVER(ORDER BY Date) → Maintains order for accumulation 
- No GROUP BY needed 

✅ Use Case: Track cumulative revenue, expenses, or orders by date

💡 SQL Tip:
Add PARTITION BY in OVER() if you want running totals by category or region.

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