Master SQL through consistent daily practice
One question a day keeps the interview anxiety away ✨
Welcome to my SQL learning journey! This repository documents my daily SQL practice, featuring carefully curated questions that progressively increase in difficulty. Whether you're just starting with databases or preparing for technical interviews, you'll find valuable problems and solutions here.
- Structured Learning: Questions organized from beginner to advanced levels
- Daily Consistency: Problems per day to build lasting skills
- Real Solutions: Actual working queries
- Progressive Difficulty: Gradual complexity increase
sql/
│
├── DAY-1/
├── Day_002/
├── ...
└── README.md
- Consistency Over Intensity: Better to solve one problem daily than ten in one day
- Understand, Don't Memorize: Focus on understanding the logic, not just the syntax
- Write First, Optimize Later: Get a working solution first, then improve it
- Read the Explanations: Even if you solve it, read the solution comments for insights
- Experiment: Try different approaches to the same problem
- Note Patterns: Many SQL problems follow similar patterns
- PostgreSQL - Powerful open-source database
- MySQL Workbench - Visual database design tool
- DB Fiddle - Online SQL playground
- SQLite Browser - Lightweight database viewer
- SQL Zoo - Interactive SQL tutorials
- LeetCode Database - Practice problems
- Mode SQL Tutorial - Comprehensive guide
- Use The Index, Luke - SQL performance explained
Found a better solution? Have a suggestion for improvement? Contributions are welcome!
If you find this repository helpful, please consider:
- ⭐ Starring the repository
- 🔄 Sharing it with others learning SQL
- 🐛 Reporting issues or suggestions
- 💬 Starting discussions about interesting problems
- Inspired by the coding challenge communities
- Problems curated from various SQL learning platforms
- Thanks to everyone who contributes and provides feedback
Happy Querying! 🚀
Made with ❤️ and lots of ☕