Не могу получить сумму по описанию

Question

DECLARE @CurrentWk DATE = CAST(DATEADD(day,(-1*DATEPART(DW,GETDATE()))+2,GETDATE()) AS DATE 
SELECT  
sum (JobOpDtl.EstProdHours) as [ProdHours],  
JobOper.DueDate,  
JobOpDtl.ResourceGrpID,  
Resource.[Description] as [ResDes],  
CASE 
  WHEN CAST(DATEADD(day,(-1*DATEPART(DW,JobOper.DueDate))+2,JobOper.DueDate) AS DATE) < @CurrentWk THEN DATEADD(DAY, -7, @CurrentWk)
  ELSE CAST(DATEADD(day,(-1*DATEPART(DW,JobOper.DueDate))+2,JobOper.DueDate) AS DATE) 
END AS [DueWk]
FROM Erp.JobOpDtl

 JOIN Erp.JobOper ON  
JobOper.JobNum = JobOpDtl.JobNum  
AND JobOper.OprSeq = JobOpDtl.OprSeq

JOIN Erp.JobHead ON  
JobHead.JobNum = JobOper.JobNum

JOIN Erp.Resource ON  
Resource.ResourceGrpID = JobOpDtl.ResourceGrpID  
AND Resource.ResourceID = JobOpDtl.ResourceID

WHERE JobHead.JobClosed = '0'  
AND JobOper.OpComplete = '0'  
AND JobOper.AssemblySeq = '0'  
and JobOper.JobNum NOT LIKE '%-w%'

GROUP BY  
Resource.Description,  
JobOpDtl.ResourceGrpID,  
JobOper.DueDate

Это тянет результаты, но я пытаюсь суммировать по неделям и ResDes.Пример
5,00, 2018-10-04, NCFP-T, 3-AXIS ROUTER - TULSA, 2018-10-01
0,50, 2018-10-05, NCFP-T, 3-AXIS ROUTER - TULSA,2018-10-01

Должно быть
5.50, 2018-10-04, NCFP-T, 3-AXIS ROUTER - TULSA, 2018-10-01

Я нахожусь напотеря.Спасибо всем за помощь.