https://school.programmers.co.kr/learn/courses/30/lessons/131118 SELECT A.REST_ID, A.REST_NAME, A.FOOD_TYPE, A.FAVORITES, A.ADDRESS, ROUND(AVG(B.REVIEW_SCORE),2) AS SCORE FROM REST_INFO AS A JOIN REST_REVIEW AS B ON A.REST_ID = B.REST_ID WHERE A.ADDRESS like '서울%' GROUP BY A.REST_ID ORDER BY SCORE DESC, A.FAVORITES DESC JOIN WHERE like GROUP BY, 그룹 당 평균 점수 구하기 위해 ORDER BY ROUND( 값, 반올림 할 자릿수) 자리..
https://school.programmers.co.kr/learn/courses/30/lessons/132203 SELECT DR_NAME, DR_ID, MCDP_CD, DATE_FORMAT(HIRE_YMD,'%Y-%m-%d') FROM DOCTOR WHERE MCDP_CD = 'CS' or MCDP_CD = 'GS' ORDER BY HIRE_YMD DESC, DR_NAME WHERE ORDER BY SELECT + DATE_FORMAT
https://school.programmers.co.kr/learn/courses/30/lessons/132201 SELECT PT_NAME, PT_NO, GEND_CD, AGE, IFNULL(TLNO,'NONE') AS TLNO FROM PATIENT WHERE AGE
https://school.programmers.co.kr/learn/courses/30/lessons/133025 SELECT H.FLAVOR FROM FIRST_HALF AS H JOIN ICECREAM_INFO AS I ON H.FLAVOR = I.FLAVOR WHERE H.TOTAL_ORDER > 3000 and I.INGREDIENT_TYPE like 'fruit_based' ORDER BY H.TOTAL_ORDER desc JOIN WHERE ORDER BY
https://school.programmers.co.kr/learn/courses/30/lessons/131112 조건 주소에 "강원도" 포함 SELECT factory_id, factory_name, address FROM food_factory WHERE instr(address,'강원도')>0 ORDER BY factory_idinstr(검색할 컬럼,찾을 문자) 찾을 문자의 index를 반환해줌
https://school.programmers.co.kr/learn/courses/30/lessons/131120?language=mysql [프로그래머스 코드 중심의 개발자 채용. 스택 기반의 포지션 매칭. 프로그래머스의 개발자 맞춤형 프로필을 등록하고, 나와 기술 궁합이 잘 맞는 기업들을 매칭 받으세요. programmers.co.kr](https://school.programmers.co.kr/learn/courses/30/lessons/131120?language=mysql) 조건 생일이 3월 성별이 여성 전화번호 null 이면 출력 안함 회원 id 기준으로 오름차순 정렬 SELECT member_id, member_name, gender, date_format(date_of_birth,'..
