진료과별 예약횟수

 

https://school.programmers.co.kr/learn/courses/30/lessons/132202

프로그래머스

난이도: 레벨2

 

아래는 내코드

SELECT MCDP_CD AS '진료과코드', COUNT(*) AS '5월예약건수'
FROM APPOINTMENT
WHERE DATE_FORMAT(APNT_YMD,'%Y-%m') = '2022-05'
GROUP BY MCDP_CD
ORDER BY COUNT(*) ASC, MCDP_CD ASC

 

예시코드

SELECT MCDP_CD AS `진료과 코드`, COUNT(*) AS 5월예약건수
FROM APPOINTMENT
WHERE APNT_YMD LIKE '2022-05%'
GROUP BY MCDP_CD
ORDER BY 5월예약건수 ASC, MCDP_CD ASC;