solvesql - 서울숲 요일별 대기오염도 계산하기👉 문제 바로가기(solvesql)SELECT CASE WHEN strftime('%u', measured_at) = '1' THEN '월요일' WHEN strftime('%u', measured_at) = '2' THEN '화요일' WHEN strftime('%u', measured_at) = '3' THEN '수요일' WHEN strftime('%u', measured_at) = '4' THEN '목요일' WHEN strftime('%u', measured_at) = '5' THEN '금요일' WHEN strftime('%u', measured_at) = '6' THEN '토요일' ..