Prøv dette - det vil slette alle dubletter fra din tabel:
;WITH duplicates AS
(
SELECT
ProductID, ProductName, Description, Category,
ROW_NUMBER() OVER (PARTITION BY ProductID, ProductName
ORDER BY ProductID) 'RowNum'
FROM dbo.tblProduct
)
DELETE FROM duplicates
WHERE RowNum > 1
GO
SELECT * FROM dbo.tblProduct
GO
Dine dubletter burde være væk nu:output er:
ProductID ProductName DESCRIPTION Category
1 Cinthol cosmetic soap soap
1 Lux cosmetic soap soap
1 Crowning Glory cosmetic soap soap
2 Cinthol nice soap soap
3 Lux nice soap soap