Question

I have this item table stored in SQL Server database:

ID_Item   | ID_Sale  | ID_Product |
1         | 200      | 2314       |
2         | 200      | 3894       |
3         | 200      | 4949       |
4         | 100      | 9389       |
5         | 100      | 9499       |
6         | 300      | 9388       |

And I need get the last record of the “ID_Sale” column. Those records as follow:

ID_Item   | ID_Sale  | ID_Product |
3         | 200      | 4949       |
5         | 100      | 9499       |
6         | 300      | 9388       |

I am trying this code, but it fetches only one record:

Select Top 1 * From Itens 
Where ID_Sale = 200
Order by ID_Item Desc

How to get the results iterating over the entire table?

Answer 1

SELECT ID_Item, ID_Sale, ID_Product 
FROM Tbl
WHERE Id_Item IN
         (
             SELECT Max(Id_Item) Id
             FROM Tbl
             WHERE [DateTime] BETWEEN @StartDate AND @EndDate
             GROUP BY Id_Sale
          )

If you use SQL SERVER 2005+

;WITH CTE
AS
(
   SELECT ID_Item, ID_Sale, ID_Product, ROW_NOUMBER() OVER (PARTITION BY ID_Sale ORDER BY ID_Item DESC) RN
   FROM Tbl
   WHERE [DateTime] BETWEEN @StartDate AND @EndDate
)
SELECT ID_Item, ID_Sale, ID_Product
FROM CTE
WHERE RN = 1