Practical SQL and PostgreSQL for Beginners

Understanding how to extract and analyze data with SQL is an essential skill for modern developers, analysts, and business professionals. This course guides you through relational database fundamentals using PostgreSQL, building your skills from the ground up. You will gain a clear understanding of database architecture, relational concepts, and practical query construction through structured text lessons and written exercises. What you'll learn: - Understand core database concepts, tables, primary keys, and data types - Filter, sort, and summarize data using SELECT, WHERE, and GROUP BY - Combine multi-table data effectively using INNER, LEFT, and FULL JOINs - Structure complex queries using Subqueries and Common Table Expressions (CTEs) - Apply PostgreSQL window functions for advanced analytical reporting - Query semi-structured data using modern JSON and JSONB features. The course starts with fundamental definitions and database terminology before progressing through query writing, multi-table operations, and analytical techniques. Designed explicitly for complete beginners, this course requires no previous database or coding background. Start reading today and master the fundamentals of writing efficient PostgreSQL queries.