In this tutorial, we will step through installing PostgreSQL, connecting to the database, loading some data, and running a variety of SQL queries.

SQL is the world’s most popular language for managing and manipulating databases. Today, Codecademy launched a free Learn SQL interactive course that will teach you the basics of tables, queries ...

Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement.

Learn how Data Transformation Services (DTS) can help you import, export, and/or transform data from various sources to single or multiple locations in Microsoft SQL Server 2000.