Question

I have a sale table includes purchases/returns/exchanges
Sample:

--------**saleTbl**------------
CustID | DOP | SKU | Price
111 | 11/05/12 | 001 | 45.99
222 | 11/20/12 | 001 | 45.99
111 | 11/06/12 | 002 | 40.95
111 | 11/06/12 | 001 | -45.99
111 | 11/19/12 | 004 | 50.00
222 | 11/25/12 | 003 | 20.99
111 | 12/01/12 | 002 | -40.95
111 | 12/01/12 | 003 | 20.99

Criteria is: find total for each customer during 11/05/12 – 11/20/12. If customer exchanged the item that was purchased during that time and purchase with the same day will be count.
The expected result is:

CustID | DOP | Price
222 | 11/20/12 | 45.99
111 | 12/01/12 | 70.99

I have tried to get the total but of course it is not right:

SELECT DISTINCT [num_cp] AS 'Member Id'
      ,MAX([dop]) AS 'Date'
      ,SUM([price]) AS 'Point'
  FROM [Mailing_List].[dbo].[UGG_DoublePoint]
  WHERE [num_cp] IN
  (
    SELECT [num_cp]
    FROM [Mailing_List].[dbo].[UGG_DoublePoint]
    GROUP BY [num_cp]
    HAVING SUM([price]) >0
  )
  --AND 
  AND [dop] BETWEEN '11/05/12' AND '11/20/12'
  GROUP BY [num_cp]

Please help! Thanks everyone.

Answer 1

I think you need to change your query to this

; WITH CTE AS 
(
    SELECT *, 
    COUNT(*) OVER (PARTITION BY CustID, DOP) Row_Cnt
    FROM TEST
), CTE2 AS 
(
    SELECT * FROM CTE
    WHERE [dop] BETWEEN '11/05/12' AND '11/20/12'
), CTE3 AS 
(
    SELECT * FROM CTE2 WHERE price > 0
    UNION
    SELECT * FROM CTE2 WHERE price < 0 
    and SKU IN (SELECT SKU FROM CTE2 WHERE Price > 0)
    UNION
    SELECT * FROM CTE
    WHERE row_cnt > 1 and DOP IN (
    SELECT max(A.dop) d FROM CTE A
    INNER JOIN CTE2 B ON A.CustID = B.CustID AND A.SKU = B.SKU
    )
 )
SELECT Custid, max(dop) dateid, sum(price) Price
from cte3
group by custid;

Check SQL Fiddle Demo