This repository contains my SQL practice solutions from HackerRank. Here is my HackerRank link (https://www.hackerrank.com/profile/reddysahana748) It also includes SQL interview questions for revision and preparation.
I solve SQL problems on HackerRank daily and regularly upload my solutions here to track my progress and strengthen my database skills.
Each file includes queries for various SQL challenges — covering basic to advanced concepts such as filtering, joins, aggregation, subqueries, ranking, and window functions.
- Basic Select Queries
- Filtering & Sorting Data (
WHERE,ORDER BY,DISTINCT) - Aggregate Functions (
COUNT,SUM,AVG,MIN,MAX) - Grouping Data (
GROUP BY,HAVING) - Joins (
INNER JOIN,LEFT JOIN,RIGHT JOIN) - Subqueries & Nested Queries
- Window Functions (
RANK,DENSE_RANK,ROW_NUMBER) - Advanced Query Problems (Nth Highest, Correlated Subqueries, etc.)
- 🗓️ Updated daily with new SQL challenges
- 🧩 Covers HackerRank SQL domains and interview-style problems
- 🗃️ Suitable for beginners and intermediate learners
- 🧠 Helps in building strong query-solving logic
🏁 Notes
Feel free to use and reference this repository for learning, practice, and interview preparation. Contributions and suggestions are always welcome!