Question

我需要在

中的查询中显示2个重复行

ID | Name | Address
--------------------
1  | John | 123 West Ave
2  | John | 123 West Ave
3  | Peter | 225 North
4  | Sally | 972 Kingsburg
5  | Peter | 225 North
6  | John |  772 Superman
7  | Peter | 882 Batman

，结果将是

ID | Name | Address
---------------------
1  | John | 123 West Ave
2  | John | 123 West Ave
3  | Peter | 225 North
5  | Peter | 225 North

Answer 1

如果您只想显示name和address成对重复的记录，那么您可以尝试以下查询：

SELECT t1.ID, t1.name, t1.address
FROM yourTable t1
INNER JOIN
(
    SELECT name, address
    FROM yourTable
    GROUP BY name, address
    HAVING COUNT(*) = 2
) t2
    ON t1.name = t2.name AND t1.address = t2.address

如果您希望任何记录显示为两个或更多次，那么您可以将HAVING子句更改为HAVING COUNT(*) >= 2。< / p>

Answer 2

使用聚合函数？

SELECT ID, Name, Address
FROM le_table
GROUP BY Name, Address
HAVING COUNT(ID) > 1
ORDER BY ID

Answer 3

SELECT *
FROM table
GROUP BY Name, Address
HAVING COUNT(ID) > 1
ORDER BY ID

如何显示2个或更多重复行

3 个答案: