T-SQL: Cannot perform an aggregate function...

Hi:

Below is my code, and the following are my results.

I want the finished good weight to be divided by the sum of the LOTQTYs shown in the last four records that I have highlighted in red, where the last two columns do not show records with 0.

And, I want this field to reside as the last column in the results.  The column (field) will be called "YIELD".

Please tell me what syntax can be used to accomplish this, without getting the error saying "cannot perform an aggregate function...".

Thank you!

Software Engineer

select DISTINCT [INVHDRBATCH], 
[FGBATCH], [FG], CONVERT(DECIMAL(10,2), [FGMAT]) as [FGMAT], 
CONVERT(DECIMAL(10,2), [FGLABOR]) as [FGLABOR], CONVERT(DECIMAL(10,2), [FGOH]) as [FGOH], 
CONVERT(DECIMAL(10,2), [FGCOST]) as [FGCOST], 
CONVERT(DECIMAL(10,2),[FGWEIGHT]) as [FGWEIGHT], [MATLB] as [MATLB], 
[LABORLB] as [LABORLB], 
[OHLB] as [OHLB],
--[FORMULA], [FORMULAMAT], [FORMULALABOR], [FORMULAOH], 
rtrim(cast((select DISTINCT IV30300.ITEMNMBR) as varchar)) as [Component],
rtrim(cast([LOT] as varchar)) as [LOT], CONVERT(DECIMAL(10,2), WIPTEST.[LOTQTY]) as [LOTQTY], 
CONVERT(DECIMAL(10,2), [LOTMATUNITCOST]) as [LOTMATUNITCOST], 
CONVERT(DECIMAL(10,2), [LOTMATWIPCOST]) as [LOTMATWIPCOST], 
case when rtrim(cast([LOT] as varchar)) LIKE rtrim(cast((select DISTINCT IV30300.ITEMNMBR) as varchar))+'%' 
THEN CONVERT(DECIMAL(10,2), [LOTLABORWIPCOST]) else 0 end as [LOTLABORWIPCOST], 
case when rtrim(cast([LOT] as varchar)) LIKE rtrim(cast((select DISTINCT IV30300.ITEMNMBR) as varchar))+'%' 
THEN CONVERT(DECIMAL(10,2), [LOTOHWIPCOST]) else 0 end as [LOTOHWIPCOST]
from WIPTEST
INNER JOIN IV30200 BATCH on WIPTEST.[INVHDRBATCH] = BATCH.BACHNUMB AND WIPTEST.[INVHDRDOC] = BATCH.DOCNUMBR
INNER JOIN IV30300 ON BATCH.TRXSORCE = IV30300.TRXSORCE AND BATCH.DOCNUMBR = IV30300.DOCNUMBR
INNER JOIN IV30400 ON IV30300.TRXSORCE = IV30400.TRXSORCE
INNER JOIN BM_View_SL_BatchTicketAuditLog LOG on BATCH.BACHNUMB = LOG.BatchTicket AND BATCH.DOCNUMBR = LOG.GPDocNo
where LOT IS NOT NULL and LOG.FGItem = ''
and WIPTEST.[FG] = '506' and WIPTEST.[FGBATCH] = '50418G12D' and WIPTEST.[INVHDRBATCH] = '50418G12D' 
UNION ALL
select DISTINCT '' as [INVHDRBATCH], 
'' as [FGBATCH], '' as [FG], NULL as [FGMAT], NULL as [FGLABOR], NULL as [FGOH], NULL as [FGCOST], NULL as [FGWEIGHT], NULL as [MATLB], 
NULL as [LABORLB], NULL as [OHLB], 
'' as [Component], '' as [LOT], NULL as [LOTQTY], NULL as [LOTMATUNITCOST], NULL as [LOTMATWIPCOST], NULL as [LOTLABORWIPCOST], NULL as [LOTOHWIPCOST]
from WIPTEST 
INNER JOIN IV30400 LOTNO ON WIPTEST.Component = LOTNO.ITEMNMBR AND WIPTEST.LOT = LOTNO.SERLTNUM
INNER JOIN IV30200 on WIPTEST.[INVHDRBATCH] = IV30200.BACHNUMB AND WIPTEST.[INVHDRDOC] = IV30200.DOCNUMBR
where WIPTEST.[FG] = '506' and WIPTEST.[FGBATCH] = '50418G12D' and WIPTEST.[INVHDRBATCH] = '50418G12D'

Results.xlsx