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LeetCode-Solutions/MySQL/delete-duplicate-emails.sql at master · Monika-R/LeetCode-Solutions · GitHub
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delete-duplicate-emails.sql
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#
Time: O(n^2)
#
Space: O(n)
DELETE
p1
FROM
Person p1, Person p2
WHERE
p1
.
Email
=
p2
.
Email
AND
p1
.
Id
>
p2
.
Id
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