Sales analysis report differences when run by Sales Empl as opposed to Item

Question

My client is running Sales analysis report and notices differences when run by Sales Employee as opposed to by Item.
I explained that:
When run by item, the report does not include service type invoices or non-inventory items.
When run by sales employee it DOES include service type invoices and non-inventory items.
Are there any other differences I should be aware of?
Does someone have a query I can run to prove this difference i.e...invoices for non-inventory items for a period? To prove where the difference comes from between the two reports?
Thanks

Answer 1

You may try this first:
SELECT S.ItemCode,
MAX(S.Description) as 'Item Description',
SUM(S.LineTotal) as 'Amount(LC)'
FROM
(SELECT T1.ItemCode AS 'ItemCode',
T1.Dscription AS 'Description',
T1.LineTotal AS 'LineTotal'
FROM dbo.OINV T0
INNER JOIN dbo.INV1 T1 ON T1.DocENtry = T0.DocENtry
WHERE T0.docdate >= [%0] and T0.docdate <= [%1]
AND T0.doctype = 'I'
UNION
SELECT T1.ItemCode AS 'ItemCode',
T1.Dscription AS 'Description',
-T1.LineTotal AS 'LineTotal'
FROM dbo.ORIN T0
INNER JOIN dbo.RIN1 T1 ON T1.DocENtry = T0.DocENtry
WHERE T0.docdate >= [%0] and T0.docdate <= [%1]
AND T0.doctype = 'I') S
GROUP BY S.ItemCode
This is by item type transaction only.
Thanks,
Gordon