How to delete duplicate record from SQL Server table?

create table emp(eno int,empname varchar(50),sal bigint)

insert into emp values('101','James','45000')
insert into emp values('101','James','45000')
insert into emp values('102','mike','12000')
insert into emp values('102','mike','45000')
insert into emp values('102','mike','45000')
insert into emp values('103','Andrew','12000')

SELECT empname, COUNT(*) FROM  emp GROUP BY empname HAVING COUNT(*) > 1

WITH tempTable as
(
SELECT ROW_NUMBER() Over(PARTITION BY eno,empname ORDER BY eno) As RowNumber,* FROM emp
)

select * from tempTable where RowNumber >1

WITH tempTable as
(
SELECT ROW_NUMBER() Over(PARTITION BY eno,empname ORDER BY eno) As RowNumber,* FROM emp
)

DELETE FROM tempTable where RowNumber >1