Tutorials

SQL tutorials

Original, beginner-friendly SQL tutorials — SELECT, filtering, joins, subqueries, CTEs, window functions, indexes, transactions, normalization and writing SQL from an application.

SQL

SQL for Beginners — Complete Free Tutorial

Learn SQL from zero with 24 original, hands-on chapters: SELECT, WHERE, sorting, aggregates and GROUP BY, INSERT/UPDATE/DELETE, data types and constraints, primary and foreign keys, inner and outer joins, subqueries, set operations, CTEs, window functions, string and date functions, indexes, views, transactions, schema design and parameterized queries. Every chapter runs against one sample database with exact expected output, common mistakes and a practice checklist.

24 chapters · Mukesh Pathak