Correct! That was the last question in the whole course!
We're sure the knowledge you acquired here will help you write more sophisticated PostgreSQL queries.
If you enjoyed our course, you can rate it so that other users know what you think. We also invite you to take a look at other courses we've prepared. In Recursive Queries in PostgreSQL, you'll learn how to write common table expressions (CTEs). Our Standard SQL Functions course is another good choice – you’ll learn how to deal with NULLs and different data types, as well as how to use SQL aggregate functions. We also recommend our PostGIS course, which covers working with maps in SQL. Until next time!