[SQL문제풀기] Popularity of Hack

문제

StrataScratch - Popularity of Hack

StrataScratch

https://platform.stratascratch.com/coding/10061-popularity-of-hack?code_type=3

내가 작성한 정답

Oracle, PostgreSQL, MySQL

select e.location, avg(popularity) "average popularity"
from facebook_employees e
join facebook_hack_survey h
on e.id = h.employee_id
group by e.location;