SQL Notes with Dev Dhar

Level up your database skills with this comprehensive SQL notes bundle designed for developers, data analysts, and students. Whether you're preparing for interviews or building real-world applications, this guide covers everything from fundamentals to advanced concepts in a clear, structured way.

What You’ll Learn

• SQL fundamentals (SELECT, WHERE, ORDER BY)
• Joins (INNER, LEFT, RIGHT, FULL)
• Aggregations (COUNT, SUM, AVG, GROUP BY)
• Subqueries & Nested Queries
• Window Functions (RANK, DENSE_RANK, ROW_NUMBER)
• Indexing & Query Optimization