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  • Status: Solved
  • Priority: Medium
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How to find duplicates in SQL Server

Hi guys,

I want to find duplicate records from SQL Server, however i want to include the ID field as well which is unique. For example
1 a b c d
2 a b c d
3 a b c d
4 g h i j

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how write a query to find first three records along with their ids.

regards
0
shah36
Asked:
shah36
1 Solution
 
Pawan KumarDatabase ExpertCommented:
Try..

SELECT id, Col1,col2,col3,col4 FROM 
(
SELECT * , ROW_NUMBER() OVER (PARTITION BY COL1,COL2,COL3,col4 ORDER BY (SELECT 1)) rnk
FROM yourTable
)k
WHERE rnk > 1

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0
 
PortletPaulCommented:
Try using count() over()

select * from (
Select *
, count(*) over(partition by col1,col2,col3,col4) as counted
From that_table) d
Where counted > 1
0
 
shah36Author Commented:
Thanks a lot for your help. yes it worked like a magic
0

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