157342.md

프로그래머스 157342

'자동차 평균 대여 기간 구하기'

🔗 https://school.programmers.co.kr/learn/courses/30/lessons/157342

SELECT 
        CAR_ID,
        ROUND(AVG(DATEDIFF(END_DATE, START_DATE)+1),1) AS AVERAGE_DURATION
FROM CAR_RENTAL_COMPANY_RENTAL_HISTORY
GROUP BY CAR_ID
HAVING AVERAGE_DURATION >= 7
ORDER BY AVERAGE_DURATION DESC,
        CAR_ID DESCs