How to remove duplicate rows from a table in SQL Server

Remove Duplicate Rows from a Table in SQL Server:
                    Duplication rows in database tables will exists by running the data repeatedly With out  having the primary key on table. Here is an example to remove the duplicate records  from a table in SQL Server

                             

DELETE FROM Employee emp1 WHERE ROW_NUMBER()<>(SELECT MIN( ROW_NUMBER())FROM       EMployee emp2 WHERE emp1.empname= emp2.empname) 

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