SQL Tutorial

« W3Schools Home Next Chapter »

SQL

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.

SQL Syntax

SELECT Company, Country FROM Customers WHERE Country <> 'USA'

SQL Result

Company Country
Island Trading  UK 
Galería del gastrónomo  Spain 
Laughing Bacchus Wine Cellars  Canada 
Paris spécialités  France 
Simons bistro  Denmark 
Wolski Zajazd  Poland 

Try it yourself »

Start learning SQL now!

SQL Demo

Learn by examples! With our editor, you can edit the SQL, and click on a button to view the result.

Try-It-Yourself!

SQL Quiz Test

Test your SQL skills at W3Schools!

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

W3Schools Exam

W3Schools Certification

W3Schools' Online Certification

The perfect solution for professionals who need to balance work, family, and career building.

More than 6000 certificates already issued!

Get Your Certificate »

The HTML Certificate documents your knowledge of HTML.

The CSS Certificate documents your knowledge of advanced CSS.

The JavaScript Certificate documents your knowledge of JavaScript and HTML DOM.

The jQuery Certificate documents your knowledge of jQuery.

The XML Certificate documents your knowledge of XML, XML DOM and XSLT.

The ASP Certificate documents your knowledge of ASP, SQL, and ADO.

The PHP Certificate documents your knowledge of PHP and SQL (MySQL).

« W3Schools Home Next Chapter »