Beginner50 min
Master SQL Database Queries
Learn SQL from basics to advanced queries. Master SELECT, JOINs, subqueries, indexes, and database optimization techniques.
What You'll Learn
SQL fundamentals: SELECT, INSERT, UPDATE, DELETE
Advanced JOINs: INNER, LEFT, RIGHT, FULL OUTER
Subqueries and correlated queries
Aggregate functions: COUNT, SUM, AVG, GROUP BY
Database indexing and optimization
Transaction management and ACID properties
Prerequisites
- •Basic understanding of databases
- •Familiarity with data structures
- •No prior SQL experience required
Tutorial Outline
1. SQL Fundamentals
Learn basic SQL syntax, data types, and CRUD operations
2. Advanced Queries
Master JOINs, subqueries, and complex query patterns
3. Aggregate Functions
Use GROUP BY, HAVING, and aggregate functions effectively
4. Database Optimization
Learn indexing strategies and query performance tuning
5. Transactions & ACID
Understand transaction management and database integrity
Key Concepts
SELECT QueriesJOINsSubqueriesIndexesQuery OptimizationTransactionsACID PropertiesDatabase Design