SQL is an ANSI (American National Standards Institute) standard for accessing database systems. SQL statements are used to retrieve and update data in a database. This interactive SQL tutorial not only provides easy-to-understand basic SQL instructions, but it allows you to practice what you learn using the on-line SQL interpreter. You will receive immediate results after submitting your SQL commands.
If you're already familiar with the basics of SQL, you can still use this as a refresher, and practice some SQL statements.

SQL Data Types SELECT statement DISTINCT	UPDATE statement DELETE statement INSERT statement	WHERE Clause AND & OR Conditions BETWEEN...AND...
IN LIKE ORDER BY GROUP BY HAVING	UNION JOIN	ALTER TABLE