Question

我有5个区域，每个区域包含1个商店和1个仓库。我有一个包含区域和相应商店和仓库的表。我还有一张表格列出了商店和仓库的库存。最后，有一个表格列出仓库的允许数量。如果我现在查看库存表，它会说：

FACILITY ID        ITEM_NUMBER    QTY
  STORE 1              15D         2 
 WAREHOUSE 1           15D         1

问题是，商店1和仓库1属于区域1，我希望以这种格式看到它：

REGION    WAREHOUSE    QTY OH     STORE    QTY OH 
  1           1          2          1         1

等等......所以我编写了以下SQL：

Create or replace view REGION_BALANCES
as
with WAREHOUSES as 
(
select

A.REGION_CODE,A.REG_DESC,A.WAREHOUSE_NUMBER,A.FACILITY_ID,C.ITEM_NUMBER,sum(C.IN_STOCK_QTY) as IN_STOCK_QTY,  B.ALLOWED_QTY
from REG_WHS_STR_ASSOC A
join ALLOWANCES B on (A.FACILITY_ID = B.FACILITY_ID)
join INVENTORIES C on (A.FACILITY_ID = FACILITY_ID) and B.ITEM_NUMBER = C.ITEM_NUMBER)
group by A.REGION_CODE,A.REG_DESC,A.WAREHOUSE_NUMBER,C.ITEM_NUMBER,B.ALLOWED_QTY
), 
STORES as 
(
select

 A.REGION_CODE,A.REG_DESC,A.STORE_NUMBER,A.FACILITY_ID,B.ITEM_NUMBER,sum(B.IN_STOCK_QTY) as IN_STOCK_QTY
from REG_WHS_STR_ASSOC A
join INVENTORIES B on (A.FACILITY_ID = B.FACILITY_ID)
group by A.REGION_CODE,A.REG_DESC,A.STORE_NUMBER, B.ITEM_NUMBER
)
select A.REGION_CODE,A.REG_DESC,A.WAREHOUSE_NUMBER,A.FACILITY_ID,WAREHOUSES.ITEM_NUMBER,WAREHOUSES.IN_STOCK_QTY,WAREHOUSES.ALLOWED_QTY,STORES.STORE_NUMBER,STORES.FACILITY_ID,STORES.ITEM_NUMBER,STORES.IN_STOCK_QTY
from REG_WHS_STR_ASSOC A
join WAREHOUSES on (A.REGION_CODE = WAREHOUSES.REGION_CODE)
join STORES on (A.REGION_CODE = STORES.REGION_CODE)
order by 5,1 asc;

我已经改变了我的连接，从左连接到右连接，交叉连接到内连接;但是，我要么得到30条记录（我需要数百条记录），要么我得到笛卡尔积。任何人都可以为我做错的事提供建议吗？

提前致谢！

Answer 1

您忘记按项目编号链接仓库和商店（加上左联接对于这种情况更好）

Create or replace view REGION_BALANCES
as
with WAREHOUSES as 
(
select
A.REGION_CODE, A.REG_DESC, A.WAREHOUSE_NUMBER, 
A.FACILITY_ID, C.ITEM_NUMBER,sum(C.IN_STOCK_QTY) as IN_STOCK_QTY,  B.ALLOWED_QTY
from REG_WHS_STR_ASSOC A
join ALLOWANCES B on (A.FACILITY_ID = B.FACILITY_ID)
join INVENTORIES C on (A.FACILITY_ID = FACILITY_ID) and B.ITEM_NUMBER = C.ITEM_NUMBER)
group by A.REGION_CODE,A.REG_DESC,A.WAREHOUSE_NUMBER,C.ITEM_NUMBER,B.ALLOWED_QTY
), 
STORES as 
(
select

A.REGION_CODE,A.REG_DESC,A.STORE_NUMBER, 
A.FACILITY_ID,B.ITEM_NUMBER,sum(B.IN_STOCK_QTY) as IN_STOCK_QTY
from REG_WHS_STR_ASSOC A
join INVENTORIES B on (A.FACILITY_ID = B.FACILITY_ID)
group by A.REGION_CODE,A.REG_DESC,A.STORE_NUMBER, B.ITEM_NUMBER
)
select A.REGION_CODE, A.REG_DESC,A. WAREHOUSE_NUMBER, A.FACILITY_ID, 
WAREHOUSES.ITEM_NUMBER, WAREHOUSES.IN_STOCK_QTY, WAREHOUSES.ALLOWED_QTY,
STORES.STORE_NUMBER, STORES.FACILITY_ID, STORES.ITEM_NUMBER, STORES.IN_STOCK_QTY
from REG_WHS_STR_ASSOC A
left join WAREHOUSES on (A.REGION_CODE = WAREHOUSES.REGION_CODE)
left join STORES on 
 (A.REGION_CODE = STORES.REGION_CODE AND STORES.ITEM_NUMBER = WAREHOUSES.ITEM_NUMBER)
order by 5,1 asc;

创建View有JOINS问题

1 个答案: