SQL Tutorial
Learn SQL step by step through 71 structured lessons. The course starts with essential concepts and progresses toward practical, advanced topics, with explanations, syntax, examples, common mistakes and exercises you can try yourself.
- Level: Beginner to advanced
- Format: 71 free, self-paced lessons
- Best for: Students, career changers and developers refreshing their skills
What You Will Learn
This learning path covers the following areas in curriculum order:
- SQL Tutorial
- SQL Filtering & Sorting
- SQL Aggregate Functions
- SQL Joins
- SQL Data Modification
- SQL Data Definition
- SQL Views & Indexes
- SQL Advanced Queries
- SQL Functions
- SQL Data Types
- SQL Transactions & Concurrency
- SQL Advanced
- SQL Security & Best Practices
- SQL Reference
Who This Course Is For
This tutorial is suitable for complete beginners as well as learners who already know some programming and want a structured reference. Start from the first lesson if the subject is new to you. Experienced learners can use the curriculum below to jump directly to a specific concept.
How to Use This Tutorial
- Read each lesson in curriculum order and run every example yourself.
- Change the examples to test your understanding instead of only copying them.
- Complete the exercises and review the common-mistake sections before moving on.
- Bookmark this course page so you can return to the complete lesson index.
Course Contents
SQL Tutorial
SQL Filtering & Sorting
SQL Aggregate Functions
SQL Joins
SQL Data Modification
SQL Data Definition
- SQL CREATE DATABASE
- SQL CREATE TABLE
- SQL Constraints
- SQL PRIMARY KEY Constraint
- SQL FOREIGN KEY Constraint
- SQL NOT NULL Constraint
- SQL UNIQUE Constraint
- SQL CHECK Constraint
- SQL DEFAULT Constraint
- SQL AUTO INCREMENT
- SQL ALTER TABLE
- SQL DROP TABLE / DROP DATABASE
SQL Views & Indexes
SQL Advanced Queries
SQL Functions
SQL Data Types
SQL Transactions & Concurrency
SQL Advanced
- SQL Window Functions
- SQL Common Table Expressions (WITH)
- SQL Recursive CTEs
- SQL Pivoting Data
- SQL Triggers
- SQL Stored Procedures
SQL Security & Best Practices
SQL Reference
Frequently Asked Questions
Is this SQL tutorial free?
Yes. The lessons listed on this page are free to read and can be completed at your own pace.
Do I need previous experience?
No previous experience is required for the introductory lessons. Some advanced modules are easier if you first complete the fundamentals in this course.
How should I practise?
Type and run the examples, deliberately change their inputs, predict the result before execution and build a small project after completing each major section.
