如何解决SQL Server 2005/2008 sumqty结果乘以连接
|| 我剩下两个表:T1列出所有已订购的物品,T2列出所有已装运的物品。我正在寻找一个结果集,该结果集将显示从T1订购的所有商品的数量以及从T2订购的相应发货数量。 当我在T1中检查一个订单的日期/订单/项目/数量信息时,它看起来像这样:DATE |ORDER |ITEM |DESCRIPTION|QTY|CUSTOMER
01/01/2011 12:00:00 AM|123456789|123456|shoes |1 |JANE
01/01/2011 12:00:00 AM|123456789|234567|shirt |2 |TIM
01/01/2011 12:00:00 AM|123456789|345678|pants |4 |JOE
01/01/2011 12:00:00 AM|123456789|123456|shoes |9 |BOB
T2看起来像这样:
ORDER |ITEM |QTYSHIPPED|SHIPPED
123456789|123456|1 |01/10/2011 12:00:00 PM
123456789|234567|2 |01/10/2011 12:00:00 PM
123456789|345678|4 |01/10/2011 12:00:00 PM
123456789|123456|9 |01/10/2011 12:00:00 PM
我的查询如下:
select convert(varchar,a.date,101) as orderdate,a.order,a.item,a.description,sum(a.qty) as qty_ordered,convert(varchar,b.shipped,101) as shippeddate sum(b.qtyshipped) as qtyshipped
from T1 a --T1 is table with all items ordered
left join shipped T2 --T2 contains order #,qty shipped and shipped date
on a.order = b.order
group by convert(varchar,101),b.shipped
结果看起来像这样:
orderdate|order|item|description|qty_ordered|shippeddate|qtyshipped
01/01/2011|123456789|123456|20|01/10/2011|20
01/01/2011|123456789|234567|4|01/10/2011|20
01/01/2011|123456789|345678|8|01/10/2011|20
我希望看到的结果如下:
orderdate|order|item|description|qty_ordered|shippeddate|qtyshipped
01/01/2011|123456789|123456|10|01/10/2011|20
01/01/2011|123456789|234567|2|01/10/2011|20
01/01/2011|123456789|345678|4|01/10/2011|20
任何信息和帮助,将不胜感激!
解决方法
我认为您还需要加入以下内容:
on a.order = b.order,a.item = b.item
,WITH OrderDays AS (
SELECT *,OrderDate = DATEADD(day,DATEDIFF(day,DATE),0)
FROM T1
),ShippingDays AS (
SELECT *,ShippingDate = DATEADD(day,SHIPPED),0)
FROM T2
),OrdersGrouped AS (
SELECT
OrderDate,[ORDER],ITEM,DESCRIPTION,Qty = SUM(QTY)
FROM OrderDays
GROUP BY OrderDate,DESCRIPTION
),ShippingsGrouped AS (
SELECT
ShippingDate,QtyShipped = SUM(QTYHSHIPPED)
FROM OrderDays
GROUP BY ShippingDate,ITEM
)
SELECT
o.*,s.ShippingDate,s.QtyShipped
FROM OrdersGrouped o
LEFT JOIN ShippingsGrouped s ON o.[ORDER] = s.[ORDER] AND o.ITEM = s.ITEM
在不同日期发生的相同商品的运送将分别分组(并显示)。如果您希望将它们分组在一起,只需修改上面的ShippingGrouped
CTE:
…
ShippingsGrouped AS (
SELECT
ShippingDate = MAX(ShippingDate),QtyShipped = SUM(QTYHSHIPPED)
FROM OrderDays
GROUP BY [ORDER],ITEM
)
…
ShippingDate
列将包含相应商品的最后发货日期。
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