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.


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;

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


SQL References

At W3Schools you will find a complete reference for keywords and function:

SQL Keyword Reference

MYSQL Functions

SQLServer Functions

MS Access Functions


SQL Data Types

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

SQL Data Types