algo más que eliminar duplicados en sql server

[iislas]

Este codigo, ya fue probado:

CREATE TABLE #temp
(
code int,
iencucod int,
duracion int
)

INSERT INTO #temp values (1,2999,1062)
INSERT INTO #temp values (1,2999,1062)
INSERT INTO #temp values (1,2999,1062)
INSERT INTO #temp values (1,2999,1062)
INSERT INTO #temp values (1,2999,1062)
INSERT INTO #temp values (1,2999,1062)
INSERT INTO #temp values (2,2999,610)
INSERT INTO #temp values (3,2999,34)
INSERT INTO #temp values (4,6170,447)
INSERT INTO #temp values (5,15729,1148)
INSERT INTO #temp values (6,15729,241)
INSERT INTO #temp values (6,15729,241)
INSERT INTO #temp values (6,15729,241)
INSERT INTO #temp values (7,15729,53)
INSERT INTO #temp values (8,38314,1029)
INSERT INTO #temp values (8,38314,1029)
INSERT INTO #temp values (8,38314,1029)
INSERT INTO #temp values (9,38314,256)

select * from #temp


WITH CTE (code, iencucod, duracion, DuplicateCount)
AS
(
SELECT code,iencucod, duracion,
ROW_NUMBER() OVER(PARTITION BY code, iencucod, duracion ORDER BY code,iencucod, duracion) AS DuplicateCount
FROM #temp
)
DELETE
FROM CTE
WHERE DuplicateCount > 1
GO