I am trying to find rows that have duplicate values, but only based off of a select number of columns, not a single column or the entire row. For example, if my table looked like this:

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

My question would be:

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

The answer to this query would be:

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

Any Ideas?

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

1

2 Answers

Try the following:

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

3

select *
from #table1
where Addr + St in (select Addr + St as FullAddr from #table1 group by Addr + St having count(Addr+St) > 1)

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