This is not a video course!!!!

The course is designed for developers, data analysts, and anyone working with databases. It covers the entire range of SQL queries - from basics to advanced techniques. The training is structured in a text format with an integrated programming environment, allowing you to immediately apply the acquired knowledge in practice.

Topics Covered in the Course

1. Introduction to Databases and SQL: the concept of databases, types of queries, basics of SQL.​
2. SQL Basics: SELECT statements, filtering with WHERE, sorting with ORDER BY, working with NULL, and other basic operations.​
3. Advanced Topics: aggregations, subqueries, joins (JOIN), window functions, and query optimization.