Quiz: Go Multi-Level
Explore how to evaluate your understanding of multi-level SQL queries by using joins along with GROUP BY and HAVING clauses. This quiz helps you confirm your ability to summarize and filter grouped data, preparing you to analyze performance trends in real-world datasets.
We'll cover the following...
We'll cover the following...
In the last lesson, you combined joins with GROUP BY and HAVING to create multi-level queries. You calculated average scores and ...