History of Available Stock in SAP B1 - tsql

Question

How can I find what was the available stock on a specific date in the past?
I know how to get OnHand for any date in the past:
SELECT LocType, LocCode, ItemCode, SUM(InQty-OutQty) [OnHand]
From OIVL
Where DocDate <= '7/7/2017'
AND ITEMCODE = 'xyz'
Group by LocType, LocCode, ItemCode
But this does not account for what was committed. It shows what was on hand, but not what was actually available (OnHand - Committed = Available). So, how could I get to this "Available" number for dates in the past?
Thanks!

Answer 1

In case this helps anyone else.... here is an example of how to get your item quantity and cost history in SAP BusinessOne. Pass the date and item you want to see history for into the function. If you omit item code it returns all items.
CREATE FUNCTION [dbo].[ufnStockAndCostHistory]
(
#EndDate DATETIME, #ItemCode NVARCHAR(255) = 'All'
)
RETURNS TABLE
AS
RETURN
(
WITH Cost AS (
SELECT
OINM.TransNum,
OINM.ItemCode,
OINM.Warehouse,
OINM.Balance,
OINM.CreateDate
FROM OINM (NOLOCK)
JOIN OITM (NOLOCK) ON OITM.ItemCode = OINM.ItemCode
JOIN OITB (NOLOCK) ON OITM.ItmsGrpCod=OITB.ItmsGrpCod
WHERE OINM.CreateDate <= #EndDate
),
FinalCostByWarehouse AS (
SELECT *
FROM Cost
WHERE TransNum = (
SELECT MAX(TransNum)
FROM Cost sub
WHERE Cost.ItemCode = sub.ItemCode
AND Cost.Warehouse = sub.Warehouse)
),
Quantity AS (
SELECT
OINM.ItemCode,
OINM.Warehouse,
SUM(OINM.InQty) - SUM(OINM.OutQty) [Qty]
FROM OINM (NOLOCK)
JOIN OITM (NOLOCK) ON OITM.ItemCode = OINM.ItemCode
JOIN OITB (NOLOCK) ON OITM.ItmsGrpCod=OITB.ItmsGrpCod
WHERE OINM.CreateDate <= #EndDate
group by OINM.ItemCode, OINM.Warehouse
)
SELECT
OITW.ItemCode,
OITW.WhsCode,
c.Balance [Cost],
q.Qty [Quantity]
FROM OITW
LEFT JOIN FinalCostByWarehouse c ON OITW.ItemCode = c.ItemCode
AND OITW.WhsCode = c.Warehouse
LEFT JOIN Quantity q ON OITW.ItemCode = q.ItemCode
AND OITW.WhsCode = q.Warehouse
WHERE (OITW.ItemCode = #ItemCode
OR #ItemCode = 'All')
AND (ISNULL(c.Balance,0) > 0
OR ISNULL(q.Qty,0) > 0)
)
Usage would look like:
SELECT *
FROM ufnStockAndCostHistory('9/15/2017','B107A-12HB')