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목록다중join (1)
Milky's note
[HackerRank](M) Placements
https://www.hackerrank.com/challenges/placements/problem?isFullScreen=true Placements | HackerRank Write a query to output the names of those students whose best friends got offered a higher salary than them. www.hackerrank.com [문제] You are given three tables: Students, Friends and Packages. Students contains two columns: ID and Name. Friends contains two columns: ID and Friend_ID (ID of the ONL..
SQL/SQL 코딩 테스트-HackerRank
2022. 3. 31. 15:33