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 belowDELETE P1 FROM Person P1, Person P2 WHERE P1.Id>P2.Id AND P1.Email=P2.Email;# 1223 ms