Products per category
An SQL exercise from Querydrill. Solve it with a SQL editor in your browser, checked on the rows it returns and again on changed data, and it is checked the moment you submit.
The task
Return each product category and how many products it has.
What this exercise teaches
Counting per group is the core GROUP BY pattern.
A hint if you get stuck
Same shape as counting customers per country.
This exercise is part of Pro
Pro unlocks all 60 exercises, with worked solutions and progress saved to your account. The free exercises work without an account.
You create a free account first, so Pro is attached to it.
Monthly is charged today and then every month until you cancel, in one click from your account page. Lifetime is one payment with no renewals. Full refund within 14 days of paying.