sql - 查找多列中具有相同值的行

Question

我试图查找具有重复值的行，但仅基于选定的列数，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.

此查询的答案是:

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

有什么想法吗？

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

Answer 1

尝试以下操作:

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