其实这个需求还是比较简单的， 只是查询物料的库存量和成本信息， 具体sql如下。  问题在于mtl_material_transactions、mtl_transaction_accounts这两张表中的数据量超大， 导致查询需要执行很长时间。

如果可以使用mtl_onhand_quantities_detail替代mtl_material_transactions， 执行效率应该会有提升。 另外， 如果不使用mtl_transaction_accounts， 物料成本信息又该如何获取呢？

SELECT mmt1.organization_id,

mmt1.subinventory_code,

mmt1.inventory_item_id,

SUM(mmt1.primary_quantity),

mt1.cost1,

SUM(mmt1.primary_quantity) * mt1.cost1

FROM inv.mtl_material_transactions mmt1,

mtl_system_items msi,

(SELECT mt.organization_id,

mt.inventory_item_id,

decode(SUM(mt.qty),0,0,SUM(mt.amt) / SUM(mt.qty)) cost1

FROM (SELECT mmt.organization_id,

mmt.inventory_item_id,

mmt.primary_quantity qty,

0 amt

FROM inv.mtl_material_transactions mmt

WHERE mmt.costed_flag IS NULL

AND mmt.transaction_type_id <> 80

UNION ALL

SELECT mta.organization_id,

mta.inventory_item_id,

0,

mta.base_transaction_value

FROM inv.mtl_transaction_accounts mta

WHERE mta.accounting_line_type = 1

AND mta.base_transaction_value <> 0) mt

GROUP BY mt.organization_id,

mt.inventory_item_id) mt1

WHERE mmt1.organization_id = mt1.organization_id

AND mmt1.inventory_item_id = mt1.inventory_item_id

AND mmt1.transaction_type_id <> 80

AND mmt1.costed_flag IS NULL

AND mmt1.organization_id = msi.organization_id(+)

AND mmt1.inventory_item_id = msi.inventory_item_id(+)

AND mmt1.subinventory_code IS NOT NULL

GROUP BY mmt1.organization_id,

mmt1.subinventory_code,

mmt1.inventory_item_id,

mt1.cost1

HAVING SUM(mmt1.primary_quantity) <> 0;