Query to Get In hand Inventory Information

SELECT
NVL(substr(org.organization_code, 1,3), ' ') orgcode
,NVL(substr(msi.segment1, 1, 8), ' ') seg11
,NVL(substr(msi.segment1, 9, 8), ' ') seg12
,NVL(substr(msi.segment1, 17, 4), ' ') seg13
,NVL(moq.subinventory_code, ' ') sub_inv_code
,NVL(to_char(round(sum(moq.transaction_quantity))), ' ') trans_qnty
FROM mtL_system_items msi
,org_organization_definitions org
,mtl_onhand_quantities moq
,hr_organization_units hou
WHERE moq.inventory_iteM_id = msi.inventory_item_id
AND moq.organizatioN_id = msi.organizatioN_id
AND moq.organizatioN_id = org.organizatioN_id
AND moq.organization_id = hou.organization_id
-- AND hou.type = 'DC'
GROUP BY org.organization_code
, moq.subinventory_code
, msi.segment1;