delete (1) 썸네일형 리스트형 LeetCode 로 공부하기 196. Delete Duplicate Emails Table: Person +-------------+---------+ | Column Name | Type | +-------------+---------+ | id | int | | email | varchar | +-------------+---------+ id is the primary key (column with unique values) for this table. Each row of this table contains an email. The emails will not contain uppercase letters. Write a solution to delete all duplicate emails, keeping only one unique email with the smalles.. 이전 1 다음