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.
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.
- Basic & Advanced
SELECTstatements - Aggregations &
GROUP BYclauses JOINoperations (INNER, LEFT, RIGHT)- Subqueries & nested queries
- Filtering & conditional logic
- SQL (MySQL / PostgreSQL / MS SQL — based on problem requirements)
- HackerRank Online IDE
- 🌟 Earned 5-Star SQL Badge on HackerRank
- 🧠 Solved 45+ SQL problems
- 📊 Strengthened skills in data extraction, transformation, and analysis
This repository reflects:
- Strong problem-solving mindset
- Ability to work with structured data
- Readiness for data analytics, business intelligence, and database-related roles
This is a personal learning and portfolio repository.
Feel free to fork, star ⭐, or explore the solutions if you find them useful.