SQL Tutorials

In this tutorial, you will be introduced to filtering rows in SQL using the WHERE clause.

Learn about SQL injection, how it works, and how to protect your system from malicious attacks.

Discover the essentials of SQL Server indexes to optimize your database queries. Learn how to implement and manage indexes effectively. Enhance your skills with practical examples and expert tips.

Understand SQL INNER JOIN vs. OUTER JOIN with examples and visual aids to enhance your database management skills.

Learn how first normal form (1NF) can improve your database design by enforcing atomicity in your tables.

Discover how to master SQL subqueries to enhance your database queries. Learn about correlated, non-correlated, and recursive subqueries. Learn about execution order and how to combine SQL subqueries with other SQL features.

Understand how to exploit SQL’s CASE statement to create categorical columns.

Understand how to use SQL String Functions to clean and process text data efficiently.

Discover SQL transactions, their importance, and how to implement them for reliable database management.

Discover the fundamentals of Cartesian products in SQL. Learn when and how to use them effectively, and explore best practices to optimize performance.

Understand how materialized views improve query performance in SQL databases. Learn the limitations and best practices of materialized views in different databases.

Learn how to effectively join three tables in SQL. Discover practical methods and examples to enhance your data manipulation skills. Master SQL joins with ease.