DB/SQL
스파르타 코딩클럽 SQL 3주차 개발일지
ej503
2021. 6. 12. 15:52
엑셀보다 쉬운 SQL 3주차 과제
select ed.enrolled_id, e.user_id, count(*) from enrolleds e
inner join enrolleds_detail ed on e.enrolled_id = ed.enrolled_id
where ed.done = 1
group by ed.enrolled_id
order by count(*) desc