How to make pivot table in SQL Server in my case? - sql

Question

I wants to display the record by same column. I don't know how describe the question also.
I have a table called SoldQtyTable
ItemNo Weeks Years QtySold AsOfWeekOnHand
----------------------------------------------------
1 1 2017 5 3
2 1 2017 2 5
3 1 2017 66 70
1 2 2017 4 33
I wants to display like below
ItemNo Years [1QtySold] [1_OnHand] [2QtySold] [2_OnHand]
-----------------------------------------------------------------------
1 2017 5 3 4 33
2 2017 2 5
3 2017 66 70
I tried in this way. But It doesn't work
select
PVT1.ItemID,
PVT1.StoreID,
PVT1.Years,
isnull([1],0) as [1QtySold], isnull([2],0) as [2QtySold],
isnull([1_OnHand],0) as [1_OnHand], isnull([2_OnHand],0) as [2_OnHand]
from
(
SELECT
ItemID,
StoreID,
Years,
Weeks,
AsOfWeekOnHand
FROM
SoldQtyTable
) L
PIVOT
(
SUM(AsOfWeekOnHand)
FOR Weeks IN ( [1_OnHand], [2_OnHand])
) AS PVT1
LEFT JOIN
(
SELECT
ItemID,
StoreID,
Years,
Weeks,
QtySold
FROM
SoldQtyTable
) L
PIVOT
(
SUM(QtySold)
FOR Weeks IN ( [1soldQty], [2soldQty]
) AS PVT2 on PVT2.ItemID = PVT1.ItemID and PVT1.Years = PVT2.Years
where
PVT1.years = 2017

Answer 1

I find conditional aggregation so much simpler:
SELECT ItemID, Years,
SUM(CASE WHEN weeks = 1 THEN QtySold END) as QtySold_1,
SUM(CASE WHEN weeks = 1 THEN AsOfWeekOnHand END) as AsOfWeekOnHand_1,
SUM(CASE WHEN weeks = 2 THEN QtySold END) as QtySold_2,
SUM(CASE WHEN weeks = 3 THEN AsOfWeekOnHand END) as AsOfWeekOnHand_2
FROM SoldQtyTable
GROUP BY ItemID, Years
ORDER BY ItemID, Years;

Answer 2

If you want to PIVOT multiple columns, you can achieve that by doing UNPIVOT first and then doing PIVOT on just one value column as described in this answer.
SELECT ItemID,
StoreID,
Years,
[1_QtySold],
[1_AsOfWeekOnHand] AS [1_OnHand],
[2_QtySold],
[2_AsOfWeekOnHand] AS [2_OnHand]
FROM
(
SELECT
ItemID,
StoreID,
Years,
Weeks + '_' + col AS col,
[value]
FROM
(
SELECT
ItemID,
StoreID,
Years,
CAST(Weeks as varchar) Weeks,
AsOfWeekOnHand,
QtySold
FROM
SoldQtyTable
WHERE Years = 2017 -- your original filter PVT1.years = 2017
) src
UNPIVOT
(
VALUE
FOR col in (AsOfWeekOnHand, QtySold)
) unpiv
) s
PIVOT
(
SUM([value])
FOR col IN ([1_AsOfWeekOnHand], [1_QtySold], [2_AsOfWeekOnHand], [2_QtySold])
) unpiv
ORDER BY StoreID
Here is the SQL Fiddle.