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Introduction
Quiz
The End
8. Congratulations

Instruction

Good job! You managed to solve all of the questions we prepared. Congratulations!

At this point, you should know enough about GROUP BY extensions to use them on your own. Thanks for studying with us! If you want to learn more, check out the other courses we offer. Have you already tried the Recursive Queries in PostgreSQL course? It teaches you how to write recursive CTEs. You'll also learn how to process trees and graphs in T-SQL and how to effectively organize long SQL queries.

Exercise

Click Next exercise to finish this part.