Sql server errors in query - mysql

Question

I am trying to collaborate 3 queries to perform arithmetic operation. The queries are shown in
(SELECT ITEM_ID,ISNULL(SUM(REC_GOOD_QTY),0)
FROM INVENTORY_ITEM
WHERE COMPANY_ID = 1
AND INVENTORY_ITEM.COMPANY_BRANCH_ID = 1
AND INVENTORY_ITEM.INV_ITEM_STATUS = 'Inward'
AND GRN_DATE < CAST('2017-01-10 00:00:00.0' AS DATETIME)
GROUP BY INVENTORY_ITEM.ITEM_ID) -
(SELECT ITEM_ID, SUM ( TOTAL_LITRE )
FROM STOCK_REQUISITION_ITEM B, STOCK_REQUISITION A
WHERE A.ID = B.REQUISITION_ID
AND A.COMPANY_ID = 1
AND A.REQ_FROM_BRANCH_ID = 1
AND A.REQUISITION_DATE < CAST('2017-01-10 00:00:00.0' AS DATETIME)
GROUP BY B.ITEM_ID) +
(SELECT ITEM_ID, SUM ( RETURN_QUANTITY )
FROM STOCK_RETURN_ITEM B, STOCK_RETURN A
WHERE A.ID = B.STOCK_RETURN_ID
AND A.COMPANY_ID = 1
AND A.COMPANY_BRANCH_ID = 1
AND A.RETURN_DATE <= CAST('2017-01-10 00:00:00.0' AS DATETIME)
GROUP BY B.ITEM_ID)
I am getting this error.
[Err] 42000 - [SQL Server]Incorrect syntax near '-'.
42000 - [SQL Server]Incorrect syntax near '+'

Answer 1

Not much to go on here for details. And we aren't actually sure if you are using mysql or sql server but pretty sure you are using sql server. I think you can accomplish what you are trying to do with something along these lines.
with Iventory as
(
SELECT i.ITEM_ID
, GoodQty = ISNULL(SUM(i.REC_GOOD_QTY), 0)
FROM INVENTORY_ITEM i
WHERE COMPANY_ID = 1
AND i.COMPANY_BRANCH_ID = 1
AND i.INV_ITEM_STATUS = 'Inward'
AND i.GRN_DATE < '2017-01-10'
GROUP BY i.ITEM_ID
)
, StockRequisition as
(
SELECT ITEM_ID
, TotalLitre = SUM(TOTAL_LITRE)
FROM STOCK_REQUISITION_ITEM B
JOIN STOCK_REQUISITION A ON A.ID = B.REQUISITION_ID
WHERE A.COMPANY_ID = 1
AND A.REQ_FROM_BRANCH_ID = 1
AND A.REQUISITION_DATE < '2017-01-10'
GROUP BY B.ITEM_ID
)
StockReturn as
(
SELECT ITEM_ID
, ReturnQuantity = SUM(RETURN_QUANTITY)
FROM STOCK_RETURN_ITEM B
JOIN STOCK_RETURN A ON A.ID = B.STOCK_RETURN_ID
WHERE A.COMPANY_ID = 1
AND A.COMPANY_BRANCH_ID = 1
AND A.RETURN_DATE <= '2017-01-10'
GROUP BY B.ITEM_ID
)
select i.ITEM_ID
, MyCalculation = i.GoodQty - isnull(Req.TotalLitre, 0) + isnull(sr.ReturnQuantity, 0)
from Inventory i
left join StockRequisition sr on sr.ITEM_ID = i.ITEM_ID
left join StockReturn Req on Req.ITEM_ID = i.ITEM_ID

Answer 2

In your queries you always returns two fields ITEM_ID and a numeric field.
To apply an arithmetical operation you must return one numeric field
The first query:
SELECT ITEM_ID,ISNULL(SUM(REC_GOOD_QTY),0)
becomes
SELECT ISNULL(SUM(REC_GOOD_QTY),0)
The second query:
SELECT ITEM_ID, SUM ( TOTAL_LITRE )
becomes
SELECT SUM ( TOTAL_LITRE )
The third query:
SELECT ITEM_ID, SUM ( RETURN_QUANTITY )
becomes
SELECT SUM ( RETURN_QUANTITY )
So the GROUP BY returns more than one row per query
UPDATE
i try to rewrite your query:
SELECT DISTINCT ii.item_id,
ISNULL(
(SELECT SUM(ii2.rec_good_qty)
FROM inventory_item ii2
WHERE ii2.item_id = ii.item_id
AND ii.company_id = 1
AND ii.company_branch_id = 1
AND ii.inv_item_status = 'Inward'
AND ii.grn_date < CAST('2017-01-10 00:00:00.0' AS DATETIME))
,0) -
ISNULL(
(SELECT SUM(total_litre)
FROM stock_requisition_item b
JOIN stock_requisition a
ON a.id = b.requisition_id
WHERE a.company_id = 1
AND a.req_from_branch_id = 1
AND a.requisition_date < CAST('2017-01-10 00:00:00.0' AS DATETIME))
,0) +
ISNULL(
(SELECT SUM(return_quantity)
FROM stock_return_item b
JOIN stock_return a
ON a.id = b.stock_return_id
WHERE a.company_id = 1
AND a.company_branch_id = 1
AND a.return_date <= CAST('2017-01-10 00:00:00.0' AS DATETIME))
,0) AS result
FROM inventory_item ii
WHERE ii.company_id = 1
AND ii.company_branch_id = 1
AND ii.inv_item_status = 'Inward'
AND ii.grn_date < CAST('2017-01-10 00:00:00.0' AS DATETIME)