[GROUP BY] 진료과별 총 예약횟수 출력

minhe2810 2023. 4. 28. 03:34

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

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

SELECT MCDP_CD as "진료과코드", count(APNT_YMD) as "5월예약건수" 
from APPOINTMENT 
where MONTH(APNT_YMD) = 05
group by MCDP_CD
order by count(APNT_NO) ASC, MCDP_CD ASC

SELECT MCDP_CD as '진료과코드', count(MCDP_CD) as '5월예약건수'
FROM APPOINTMENT
WHERE APNT_YMD like '2022-05%'
GROUP BY MCDP_CD
ORDER BY count(MCDP_CD) ASC, MCDP_CD ASC;

SELECT MCDP_CD as '진료과코드' , count(APNT_YMD) as '5월예약건수'
from APPOINTMENT  
where date_format(APNT_YMD , '%Y-%m') = '2022-05'
group by MCDP_CD
order by 5월예약건수 , 진료과코드