목록2024/05/27 (1)
짜리몽땅 매거진
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문제1. 두 테이블 결합하기출처 : solvesql 연습문제문제 정보 : 난이도 2 / 정답률 31.18%https://solvesql.com/problems/join/ https://solvesql.com/problems/join/ solvesql.com 정답 쿼리select DISTINCT athlete_idfrom records a join events b on a.event_id = b.idwhere b.sport = 'Golf' 문제 해설문제2. 버뮤다 삼각지대에 들어가버린 택배출처 : solvesql 연습문제문제 정보 : 난이도 2 / 정답률 35.35%https://solvesql.com/problems/shipment-in-bermuda/ https://solvesql.com/p..
Data/SQL
2024. 5. 27. 22:37