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22.02.08 - 오늘의 SQL #124

Merged

mildsalmon merged 2 commits into master from SQL

Feb 8, 2022

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mildsalmon commented Feb 8, 2022

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mildsalmon added 2 commits

February 8, 2022 09:24


          🎉[Add] Symmetric Pairs - 1차 시도 (성공)

975aa85

단순히 조인만을 이용해서 처리하려니까 도저히 방법이 떠오르지 않았다.

그래서 단순하게, 조인 조건을 알맞게 주고, group by와 having 조건을 주어서 처리했다.

x와 y가 같은 경우와 x와 y가 다를 경우를 나눠서 풀었다.


          ⚡[Edit] Symmetric Pairs - 남의 코드

45c68c7

Having 조건식을 간략화시켰다.

어찌 이런 생각을 할 수 있는걸까..

mildsalmon merged commit 9563d17 into master

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