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SQL is a standard language for accessing databases.

Our SQL tutorial will teach you how to use SQL to access and manipulate data in: MySQL, SQL Server, Access, Oracle, Sybase, DB2, and other database systems.


Examples in Each Chapter

With our online SQL editor, you can edit the SQL statements, and click on a button to view the result.

Example

SELECT * FROM Customers;

Try it Yourself »

Click on the "Try it Yourself" button to see how it works.

Start learning SQL now!


SQL Quiz Test

Test your SQL skills at w3ii!

Start SQL Quiz!


SQL Quick Reference

An SQL Quick Reference. Print it and put it in your pocket.

SQL Quick Reference


SQL Data Types

Data types and ranges for Microsoft Access, MySQL and SQL Server.

SQL Data Types