🧠 SQL Notes & Practice – 30 Days of SQL Mastery 🚀

Welcome to sql-notes-and-practice — a complete, beginner-to-advanced SQL learning roadmap broken down into 35 days of structured, practical, and real-world practice. Whether you're preparing for SQL interviews, upskilling for data-related roles, or just want to master SQL, this repo is your perfect daily companion. 🎯

🔥 Learn. Practice. Master. One day at a time.

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📌 Why This Repository?

• ✅ Beginner-friendly roadmap for learning SQL
• ✅ Daily structured modules with summaries, sample data & practice queries
• ✅ MySQL Workbench ready
• ✅ Real-world projects for hands-on experience
• ✅ Ideal for interview prep, practice, and revision

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🗺️ Learning Roadmap

📘 Phase 1: Basics (Day 1–7)

Day	Topics
Day 1	CREATE TABLE, INSERT, SELECT
Day 2	WHERE, AND, OR, NOT
Day 3	IN, BETWEEN, LIKE, IS NULL
Day 4	ORDER BY, LIMIT, OFFSET
Day 5	UPDATE, DELETE,DROP,ALTER,TRUNCATE
Day 6	DISTINCT, COUNT, MIN, MAX, AVG, SUM
Day 7	Review + Practice Set

📗 Phase 2: Intermediate (Day 8–15)

Day	Topics
Day 8	GROUP BY, HAVING
Day 9	INNER JOIN
Day 10	LEFT JOIN, RIGHT JOIN
Day 11	FULL OUTER JOIN
Day 12	Self Join
Day 13	UNION, INTERSECT, EXCEPT
Day 14	Review + Real-World Query Practice

📙 Phase 3: Advanced (Day 16–22)

Day	Topics
Day 15	Subqueries
Day 16	Correlated Subqueries
Day 17	CASE, IF, COALESCE
Day 18	Views
Day 19	Indexes (Intro)
Day 20	Stored Procedures
Day 21	Transactions & ACID
Day 22	Review + Practice Set

📕 Phase 4: Real-World Practice (Day 23–27)

Day	Projects
Day 23	Student Database
Day 24	Library Management
Day 25	E-Commerce Database
Day 26	HR & Payroll System
Day 27	Hotel Booking System

📒 Phase 5: Final Capstone & Polish (Day 28–30)

Day	Topics
Day 28	Final Capstone Project
Day 29	Query Optimization + Indexing
Day 30	Polish & Upload Repo

🎁 Bonus Days (Optional)

Day	Topics
Day 31	PostgreSQL-specific Features
Day 32	MySQL-specific Features
Day 33	Window Functions
Day 34	SQL Interview Questions
Day 35	SQL for Data Analytics

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📂 Folder Structure

sql-notes-and-practice/
├── day1/
│   ├── README.md        # Concepts summary
│   ├── data.sql         # Table schema + practice questions
│   └── queries.sql      # Solutions with comments
├── day2/
│   └── ...
├── CONTRIBUTING.md
└── LICENSE

Each day includes:

• 📖 README.md: Summary of concepts
• 🧱 data.sql: Table definitions + sample data
• 🧠 queries.sql: Practice SQL queries with inline comments

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🛠️ Tech Stack

• Database: MySQL
• Environment: MySQL Workbench
• Language: SQL
• Platform: GitHub

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✨ Highlights

• 📚 30-Day Learning Roadmap (From Basics to Advanced)
• 🧪 Real-life Practice Projects (HR, E-commerce, Library, etc.)
• 📈 Ideal for Interviews and SQL Skill-Building
• 🎓 Learn-by-doing approach with examples and explanations
• 💡 Bonus Modules & Daily Practice

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🚀 How to Use This Repository

1. Clone the repo

git clone https://github.com/Thogaruchesti-hemanth/sql-notes-and-practice.git

2. Open MySQL Workbench
3. Choose a folder (e.g., day5) and run data.sql followed by queries.sql
4. Read the README.md for each day's explanation and concepts
5. Modify, experiment, and take notes!

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🤝 Contributing

Contributions are welcome! Please read the CONTRIBUTING.md file for guidelines before submitting a PR.

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🌟 Show Your Support

If this project helped you:

• ⭐ Star the repo
• 🍴 Fork and customize it
• 🔗 Share with friends and communities
• 🧵 Mention on social platforms using #30DaysOfSQL

Let’s grow and learn together! 🙌

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👨‍💻 About Me

Hi, I’m Sai Hemanth Thogaruchesti, a passionate Android & Flutter developer, tech enthusiast, and open-source contributor from 🇮🇳 India.

• 💼 LinkedIn: thogaruchesti-hemanth

Let’s connect, collaborate, and build together! 🚀

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📄 License

This project is licensed under the MIT License.

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📈 Learn SQL. Build Projects. Grow Your Profile. 🏆 Helping Developers & Data Enthusiasts Shine on GitHub.