The Introduction to SQL course is a goes over the basics, and covers querying a database, sorting results, and using joins and unions. It covers how to use aggregate data, and filter. We also look at how to create a table, and drop it.
First, review the slides for the Introduction to SQL course. After you are comfortable with the material, go through the exercises. We have provided a database with data that you can interact with for the exercises.
The slides and course material are copyrighted, and licensed under the GNU General Public License.