Ratings & reviews
14 days ago
This course was fantastic. You can go at own pace and get assistance if you get stuck.
16 days ago
THE TASK WAS EASY
18 days ago
It was a good practice aspect somewhat, with mediocre explanations but I think you shouldn't have fill-in the blank for the code writing. We need to be given the view of the table... Show more
Complete all chapters to get certificate
In this section, you will learn how to group and work with such data. For this, we will get acquainted with such an operator as GROUP BY. You will also learn how to filter grouped data using the operator HAVING.
In this section, you will learn how you can combine several tables, thus working with one common table, which will simplify the creation of queries.