목록데이터 분석 (156)

Data Analyst KIM

[MySQL] 그룹별 조건에 맞는 식당 목록 출력하기(프로그래머스)

SELECT MEMBER_NAME , REVIEW_TEXT , DATE_FORMAT(r.REVIEW_DATE,'%Y-%m-%d') AS REVIEW_DATE FROM MEMBER_PROFILE m INNER JOIN REST_REVIEW r ON m.MEMBER_ID=r.MEMBER_ID WHERE m.MEMBER_ID = (SELECT MEMBER_ID FROM REST_REVIEW GROUP BY MEMBER_ID ORDER BY COUNT(MEMBER_ID) DESC LIMIT 1) ORDER BY REVIEW_DATE,REVIEW_TEXT
데이터 분석/Coding Test 2023. 11. 3. 08:50
[MySQL] 대여 횟수가 많은 자동차들의 월별 대여 횟수 구하기(프로그래머스)

SELECT MONTH(START_DATE) AS MONTH , CAR_ID , COUNT(*) AS RECORDS FROM CAR_RENTAL_COMPANY_RENTAL_HISTORY WHERE DATE_FORMAT(START_DATE,'%Y-%m') BETWEEN '2022-08' AND '2022-10' AND CAR_ID IN (SELECT CAR_ID FROM CAR_RENTAL_COMPANY_RENTAL_HISTORY WHERE DATE_FORMAT(START_DATE,'%Y-%m') BETWEEN '2022-08' AND '2022-10' GROUP BY CAR_ID HAVING COUNT(CAR_ID) >= 5) GROUP BY MONTH(START_DATE), CAR_ID HAVING R..
데이터 분석/Coding Test 2023. 11. 3. 08:49
[MySQL] 저자 별 카테고리 별 매출액 집계하기(프로그래머스)

SELECT a.AUTHOR_ID , a.AUTHOR_NAME , b.CATEGORY , SUM((SALES * PRICE)) AS TOTAL_SALES FROM BOOK b INNER JOIN AUTHOR a ON b.AUTHOR_ID = a.AUTHOR_ID INNER JOIN BOOK_SALES bs ON b.BOOK_ID = bs.BOOK_ID WHERE bs.SALES_DATE LIKE '2022-01%' GROUP BY b.CATEGORY, b.AUTHOR_ID ORDER BY AUTHOR_ID, CATEGORY DESC
데이터 분석/Coding Test 2023. 11. 3. 08:48
[MySQL] 조회수가 가장 많은 중고거래 게시판의 첨부파일 조회하기(프로그래머스)

SELECT CONCAT('/home/grep/src/',f.BOARD_ID,'/',f.FILE_ID,f.FILE_NAME,f.FILE_EXT) AS FILE_PATH FROM USED_GOODS_BOARD b INNER JOIN USED_GOODS_FILE f ON b.BOARD_ID = f.BOARD_ID WHERE b.views = (SELECT MAX(views) FROM USED_GOODS_BOARD) ORDER BY FILE_ID DESC
데이터 분석/Coding Test 2023. 11. 3. 08:46
[MySQL] 주문량이 많은 아이스크림들 조회하기(프로그래머스)

WITH t AS ( SELECT f.FLAVOR , SUM(f.TOTAL_ORDER)+SUM(j.TOTAL_ORDER) AS total FROM FIRST_HALF f INNER JOIN JULY j ON f.FLAVOR = j.FLAVOR GROUP BY FLAVOR ) SELECT FLAVOR FROM t ORDER BY total DESC LIMIT 3
데이터 분석/Coding Test 2023. 11. 3. 08:45
[MySQL] 우유와 요거트가 담긴 장바구니(프로그래머스)

SELECT CART_ID FROM CART_PRODUCTS WHERE NAME IN ('Milk','Yogurt') GROUP BY CART_ID HAVING COUNT(DISTINCT NAME)>1
데이터 분석/Coding Test 2023. 11. 3. 08:44
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