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한 번 더 체크
링크
Delete Duplicate Emails
Open
DELETE
Swap Salary
Open
UPDATE
https://leetcode.com/problems/swap-salary/submissions/
Reformat Department Table
Open
CASE
https://leetcode.com/problems/reformat-department-table/
Second Highest Salary
Open
Aggregate Function
https://leetcode.com/problems/second-highest-salary/submissions/
