Write advanced SQL Select

Question

Item table:

|   Item    |   Qnty    |   ProdSched   |
|    a      |    1      |       1       |
|    b      |    2      |       1       |
|    c      |    3          


        

Answer 1

Let's hit this in two phases. First, although this is not the exact format you wanted, you can get the data you asked for as follows:

Select item, ProdSched, max(qty)
  from Item1
 group by item,ProdSched

Now, to get the data in the format you desired, one way of accomplishing it is a PIVOT table. You can cook up a pivot table in SQL Server as follows:

Select item, [1] as ProdSched1, [2] as ProdSched2
from ( Select Item, Qty, ProdSched
         from item1 ) x
Pivot ( Max(qty) for ProdSched in ([1],[2]))  y