SQL Notes

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