Delete duplicate rows in SQL Server

Delete duplicate rows in SQL Server

Hello everyone, I am going to share the T-SQL query for delete duplicate rows using SQL Server 2012 and you can see the query detail as below.

T-SQL Query for delete duplicate rows

WITH mobile AS (
   SELECT [Account], [AlertToMobile],
     ROW_NUMBER() OVER(PARTITION BY [Account], [AlertToMobile]
                 ORDER BY [AlertToMobile]) AS [count]
   FROM [dbo].[Mobile]
)
DELETE mobile WHERE [count] > 1

The query result as given below





                                                            OR

We have another ways to delete duplicate rows using SQL Server as given below.
                           
            
DELETE FROM [dbo].[Mobile]
              WHERE UID NOT IN(SELECT MAX(UID)
          FROM [dbo].[Mobile]
GROUP BY [Account], [AlertToMobile])


For more detail, you can go below links.


ANIL SINGH

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