196. Delete Duplicate Emails
Write a SQL query to delete all duplicate email entries in a table named Person, keeping only unique emails based on its smallest Id.
+——+—————————+
| Id | Email |
+——+—————————+
| 1 | john@example.com |
| 2 | bob@example.com |
| 3 | john@example.com |
+——+—————————+
Id is the primary key column for this table.
For example, after running your query, the above Person table should have the following rows:
+——+—————————+
| Id | Email |
+——+—————————+
| 1 | john@example.com |
| 2 | bob@example.com |
+——+—————————+
# Write your MySQL query statement below
DELETE p FROM Person p,Person q where p.Id>q.Id AND q.Email=p.Email
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