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Find duplicate email addresses

2022-07-07 06:09:00 【々 orange if ℃ №】

Learning goals ：

A daily topic - Find duplicate email

Learning content ：

Write a SQL Inquire about , lookup Person All duplicate email addresses in the table .
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select Email from
(
  select Email, count(Email) as num
  from Person
  group by Email
) as statistic
where num > 1

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本文为[々 orange if ℃ №]所创，转载请带上原文链接，感谢
https://yzsam.com/2022/02/202202130721283429.html

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