목록2023/11 (38)

Data Analyst KIM

[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
[MySQL] 헤비 유저가 소유한 장소(프로그래머스)

WITH cnt AS ( SELECT * , COUNT(HOST_ID) OVER (PARTITION BY HOST_ID) AS cnt FROM PLACES ) SELECT ID , NAME , HOST_ID FROM cnt WHERE cnt >= 2 ORDER BY ID
데이터 분석/Coding Test 2023. 11. 3. 08:43
[MySQL] 서울에 위치한 식당 목록 출력하기(프로그래머스)

SELECT i.REST_ID , i.REST_NAME , i.FOOD_TYPE , i.FAVORITES , i.ADDRESS , ROUND(AVG(r.REVIEW_SCORE),2) AS SCORE FROM REST_INFO i INNER JOIN REST_REVIEW r ON i.REST_ID = r.REST_ID WHERE address LIKE '서울%' GROUP BY REST_ID ORDER BY SCORE DESC , FAVORITES DESC
데이터 분석/Coding Test 2023. 11. 3. 08:41
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