获取具有MYSQL中出现次数的重复行

Question

我需要在单个MYSQL查询中列出所有重复ID以及每个ID的出现次数。

 ID
____
 1
 1
 2
 3
 4
 4
 4
 5
 5
 6
 7

输出必须是：

ID | Occurrence
_______________
 1 | 2
 4 | 3
 5 | 2 

Answer 1

只需使用简单的GROUP BY查询：

SELECT ID, COUNT(*) AS Occcurrence
FROM yourTable
GROUP BY ID
HAVING COUNT(*) > 1

Answer 2

这可以通过使用Group By子句和Count()函数

来完成

select 
    Id, count(id) as Occurance
from
    tableName
group by id
having Occurance > 1;

Answer 3

使用mysql GROUP BY

select ID,count(*) from table_name group by ID having count(*) > 1