GROUP BY total order quantity - sql-server

Question

we're trying to make our table add together all values in column 2 (QtyComp - an expression column of qtyorder * totalqty basically), where they have the same ItemNo (column 1).
So, we currently get the below:
ItemNo QtyComp
7441 3
7441 1
7441 5
What we want is it to see the SUM of the column QTYComp to give this result:
ItemNo QtyCom
7441 9
Our code is below; I've bolded the part that we need it to sum the results of:
SELECT TOP (100) PERCENT ItemSpecs_2.itemno,
workorderdetails.qtycomplete *
ItemSpecFullStruc_2.totalqtyperroot AS QtyComp
FROM dbo.workorderdetails AS WorkOrderDetails
INNER JOIN dbo.itemspecfullstruc AS ItemSpecFullStruc_2
ON ItemSpecFullStruc_2.rootitemspecid =
workorderdetails.itemspecid
INNER JOIN dbo.itemspecs AS ItemSpecs_2
ON ItemSpecs_2.itemspecid = ItemSpecFullStruc_2.childitemspecid
INNER JOIN dbo.workorder AS WorkOrder_1
ON WorkOrder_1.workorderid = workorderdetails.workorderid
LEFT OUTER JOIN dbo.tobescheduled_completed
ON WorkOrder_1.workorderid =
dbo.tobescheduled_completed.workorderid
WHERE ( workorderdetails.completed = 1 )
AND ( workorderdetails.compdate > Getdate() - 42 )
GROUP BY ItemSpecs_2.itemno,
workorderdetails.qtyordered,
ItemSpecFullStruc_2.totalqtyperroot,
workorderdetails.[lineno],
workorderdetails.qtycomplete,
workorderdetails.compdate,
workorderdetails.qtycomplete * ItemSpecFullStruc_2.totalqtyperroot
We would really appreciate some ideas!
Thanks,
Trish

Answer 1

If you want to sum these column, simply add a sum() syntax as follows:
SELECT TOP (100) PERCENT ItemSpecs_2.itemno,
sum(workorderdetails.qtycomplete *
ItemSpecFullStruc_2.totalqtyperroot) AS QtyComp
FROM dbo.workorderdetails AS WorkOrderDetails
INNER JOIN dbo.itemspecfullstruc AS ItemSpecFullStruc_2
ON ItemSpecFullStruc_2.rootitemspecid =
workorderdetails.itemspecid
INNER JOIN dbo.itemspecs AS ItemSpecs_2
ON ItemSpecs_2.itemspecid = ItemSpecFullStruc_2.childitemspecid
INNER JOIN dbo.workorder AS WorkOrder_1
ON WorkOrder_1.workorderid = workorderdetails.workorderid
LEFT OUTER JOIN dbo.tobescheduled_completed
ON WorkOrder_1.workorderid =
dbo.tobescheduled_completed.workorderid
WHERE ( workorderdetails.completed = 1 )
AND ( workorderdetails.compdate > Getdate() - 42 )
GROUP BY ItemSpecs_2.itemno,
workorderdetails.qtyordered,
ItemSpecFullStruc_2.totalqtyperroot,
workorderdetails.[lineno],
workorderdetails.qtycomplete,
workorderdetails.compdate
Also, you need to delete from group by that column.
For getting the desired result, set a GROUP BY only by ItemSpecs_2.itemno

Answer 2

assuming your current code gives you correct calculations, the lazy answer would be to write it as a CTE and then sum it, but this may result in sub optimal table scans - fine if it's just adhoc.
with mytemp as (
SELECT TOP (100) PERCENT ItemSpecs_2.itemno,
workorderdetails.qtycomplete *
ItemSpecFullStruc_2.totalqtyperroot AS QtyComp
FROM dbo.workorderdetails AS WorkOrderDetails
INNER JOIN dbo.itemspecfullstruc AS ItemSpecFullStruc_2
ON ItemSpecFullStruc_2.rootitemspecid =
workorderdetails.itemspecid
INNER JOIN dbo.itemspecs AS ItemSpecs_2
ON ItemSpecs_2.itemspecid = ItemSpecFullStruc_2.childitemspecid
INNER JOIN dbo.workorder AS WorkOrder_1
ON WorkOrder_1.workorderid = workorderdetails.workorderid
LEFT OUTER JOIN dbo.tobescheduled_completed
ON WorkOrder_1.workorderid =
dbo.tobescheduled_completed.workorderid
WHERE ( workorderdetails.completed = 1 )
AND ( workorderdetails.compdate > Getdate() - 42 )
GROUP BY ItemSpecs_2.itemno,
workorderdetails.qtyordered,
ItemSpecFullStruc_2.totalqtyperroot,
workorderdetails.[lineno],
workorderdetails.qtycomplete,
workorderdetails.compdate,
workorderdetails.qtycomplete * ItemSpecFullStruc_2.totalqtyperroot
)
select
itemno
,sum(QtyComp) as QtyComp
from mytemp
group by itemno