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New Monthly SQL Practice for September 2021!

Do you know more advanced SQL than basic skills? Do you know how to write basic SQL queries, know functions that use different data types, work with text using special SQL functions, or convert data types without any problem? If your answer to these questions is yes, you have a chance to test your knowledge in solving business problems in the new SQL Practices, available every month on

The September SQL Practice is at the advanced level. You will check your SQL skills with data about a residential builder that designs and builds homes. It only operates in Colorado right now, but the owners want to grow the business and become more attractive to potential homebuyers.

Maybe this is the first time you’ve come across our Monthly SQL Practices. offers one free SQL Practice each month: at the basic level in the even months and the advanced level in the odd months. Each SQL Practice takes about an hour (or less!) and contains 5 to 10 SQL exercises to help you practice your skills.

Each Monthly SQL Practice features a different business or hobby. We’ve had topics including a family tree, a language school, a book exchange, a job agency, rental cars, stars and astronomy, auto repair, baking, pizza, movies, U.S. cities, clothing retail, and more.

In our September 2021 SQL Practice, you’ll meet Mia and George who run a construction business in the state of Colorado, USA. They would like to understand their customers and their needs for building a home. Can you help them gather the needed information by using SQL? It shouldn’t be too hard if you have finished our Standard SQL Functions course, so don’t worry.

Remember to use the hints, and have fun!