sql – 在多个列中查找具有相同值的行

我正在尝试找到具有重复值的行,但仅基于选定列数,而不是单列或整行.例如,如果我的表格如下所示：

ID     Address    State    Name
-------------------------------
0      7 brown    NY       John
1      3 Red      WX       Jane
2      7 brown    WX       Ted
3      7 brown    NY       Fred

我的问题是：

Find all ID’s for rows where the row’s Address and State field matched another row’s Address and State field.

这个查询的答案是：

ID    Address    State    Name
------------------------------
0     7 brown    NY       John
3     7 brown    NY       Fred

有任何想法吗？

建议：
How to select multiple columns values same rows from single table

解决方法

尝试以下：

SELECT A.*
FROM YourTable A
INNER JOIN (SELECT Address,State
            FROM YourTable
            GROUP BY Address,State
            HAVING COUNT(*) > 1) B
ON A.Address = B.Address AND A.State = B.State

原文地址：https://www.jb51.cc/mssql/81589.html