编写一个SQL查询来删除
Person表中所有重复的电子邮件，在重复的邮件中只保留
Id
最小的邮件。
+----+------------------+ | Id | Email | +----+------------------+ | 1 | [email protected] | | 2 | [email protected] | | 3 | [email protected] | +----+------------------+ Id是这个表的主键.
例如，在运行查询之后，上面的 Person 表应显示以下几行:
+----+------------------+ | Id | Email | +----+------------------+ | 1 | [email protected] | | 2 | [email protected] | +----+------------------+
DELETE p1
FROM Person p1, Person p2
WHERE p1.Email = p2.Email AND
p1.Id > p2.Id