Exploring rating by country and gender
Now you will investigate the average rating of customers aggregated by country and gender.
Bu egzersiz
Data-Driven Decision Making in SQL
kursunun bir parçasıdırUygulamalı interaktif egzersiz
Bu örnek kodu tamamlayarak bu egzersizi bitirin.
SELECT
___ -- Select country, gender and rating
___
___
FROM renting AS r
___ customers AS c -- Use the correct join
___;