SQL is a standard language for storing, manipulating and retrieving data in databases.
Our SQL tutorial will teach you how to use SQL in: MySQL, SQL Server, MS Access, Oracle, Sybase, Informix, Postgres, and other database systems.
Start learning SQL now »Examples in Each Chapter
With our online SQL editor, you can edit the SQL statements, and click on a button to view the result.
Click on the "Try it Yourself" button to see how it works.
SQL Exercises
SQL Examples
Learn by examples! This tutorial supplements all explanations with clarifying examples.
SQL Quiz Test
Test your SQL skills at W3Schools!
My Learning
Track your progress with the free "My Learning" program here at W3Schools.
Log in to your account, and start earning points!
This is an optional feature. You can study W3Schools without using My Learning.
SQL References
At W3Schools you will find a complete reference for keywords and function:
SQL Data Types
Data types and ranges for Microsoft Access, MySQL and SQL Server.