Rank Employees into Performance Quartiles Using SQL | NTILE() Window Function Explained 🔥

📄 YouTube Description:

Learn how to rank employees into performance quartiles using SQL's powerful NTILE() window function! In this video, we walk through a real-world example using a sales dataset and explain the query step by step.

You’ll learn:
✅ How to use Common Table Expressions (CTEs)
✅ How to aggregate monthly sales per salesperson
✅ How to apply NTILE(4) to categorize performance into quartiles
✅ When and why to use PARTITION BY and ORDER BY inside window functions

Perfect for:
🔹 Business Analyst & Data Analyst interview prep
🔹 SQL project demos and dashboards
🔹 Amazon / Flipkart / MNC analyst roles

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👉 @KingSlayer-m3t — The Data Hustler