🌟 HackerRank SQL – 5 Star Solutions

Welcome to my collection of SQL solutions that helped me achieve a 5-Star SQL Badge on HackerRank ⭐⭐⭐⭐⭐.
This repository demonstrates my ability to write clean, optimized, and efficient SQL queries across multiple difficulty levels.

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🚀 About This Repository

This project includes:

• ✅ Well-structured solutions for HackerRank SQL problems
• 📂 Queries organized by difficulty and topic
• ✍️ Clean, readable, and performance-optimized SQL
• 📌 Practical use of real-world querying techniques

The goal of this repository is to showcase my strong foundation in SQL and my approach to solving data-centric problems efficiently.

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🧠 SQL Concepts Covered

• Basic & Advanced SELECT statements
• Aggregations & GROUP BY clauses
• JOIN operations (INNER, LEFT, RIGHT)
• Subqueries & nested queries
• Filtering & conditional logic

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🛠️ Technologies Used

• SQL (MySQL / PostgreSQL / MS SQL — based on problem requirements)
• HackerRank Online IDE

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🏅 Key Achievements

• 🌟 Earned 5-Star SQL Badge on HackerRank
• 🧠 Solved 45+ SQL problems
• 📊 Strengthened skills in data extraction, transformation, and analysis

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🎯 Why This Repository Matters

This repository reflects:

• Strong problem-solving mindset
• Ability to work with structured data
• Readiness for data analytics, business intelligence, and database-related roles

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🤝 Contributions & Usage

This is a personal learning and portfolio repository.
Feel free to fork, star ⭐, or explore the solutions if you find them useful.