Exploring rating by country and gender
Now you will investigate the average rating of customers aggregated by country and gender.
Questo esercizio fa parte del corso
Data-Driven Decision Making in SQL
Esercizio pratico interattivo
Prova a risolvere questo esercizio completando il codice di esempio.
SELECT
___ -- Select country, gender and rating
___
___
FROM renting AS r
___ customers AS c -- Use the correct join
___;