Question

我有一个要求，我需要根据电子邮件（帐单邮寄地址电子邮件地址）选择最近一年的订单。我需要显示订单号，发货名，运送姓氏，账单地址电子邮件ID和项目描述以及提交日期。相同的地址表用于存储货运（ship_to 1）和帐单地址（ship_to始终为0）。送货地址中的电子邮件字段是可选的，如果两个地址仅匹配，则会将帐单地址写入DB。

地址：

Order_num first_name  last_name    email        ship_to_num      
-----------------------------------------------------------
ord1       abc          abc        abc@c.com      0
ord1       cdf          ccc        XXc@m.com      1

我写了一个如下的初始查询：

select 
    addr.first_name, addr.last_name, addr.order_num, addr.Update_Date_Time,
    ord.Order_Amt, item.Item_Desc
from 
    ADDR addr 
inner join 
    ORDER ord on ord.Order_num = addr.Order_Num
inner join 
    ITEM item on ord.Order_num = item.Order_Num
where 
    addr.Order_Num in (select Order_num 
                       from TOEADDR addr 
                       where addr.ShipTo_Num = 0 
                         and addr.EM_EMAIL_ADDR = 'avc@abc.com'
                         and addr.Update_Date_Time > DATEADD(year,-1, GETDATE())) 
order by  
    addr.Update_Date_Time desc

有什么办法可以将这个逻辑添加到上面的查询中：

 (SELECT TOP 1 First_Name, LAST_NAME FROM ADDR ORDER BY ShipTo_Num ASC)

谢谢，CTE就像魅力一样。以下是最终查询：

 ;with cte_addr
 AS
 (SELECT First_Name,LAST_NAME,  EM_EMAIL_ADDR, order_num,Update_Date_Time,ShipTo_Num
 , ROW_NUMBER() OVER (PARTITION BY order_num ORDER BY ShipTo_Num desc) as ROWID
 FROM ADDR 
 ) 
 SELECT addr.first_name , addr.last_name, addr.order_num, addr.Update_Date_Time,
 ord.Order_Amt, item.Item_Desc
 FROM cte_addr addr
  inner join ORDER ord on ord.Order_num = addr.Order_Num
 inner join ITEM item on ord.Order_num = item.Order_Num
   WHERE addr.ROWID =1  and 
 addr.Order_Num in(
  select Order_num from ADDR billAddress where
  billAddress.ShipTo_Num = 0 and billAddress.EM_EMAIL_ADDR = 'afv@abv.com'
  and billAddress.Update_Date_Time > DATEADD(year,-1,GETDATE()) 

 ) 
order by addr.Update_Date_Time desc

Answer 1

您可以使用CTE来实现它。你可以写下面的查询。这可以是您正在寻找的逻辑的示例查询

;with cte_addr
 AS
 (SELECT First_Name,LAST_NAME, email EM_EMAIL_ADDR, order_num,Update_Date_Time,ShipTo_Num
 , ROW_NUMBER() OVER (PARTITION BY First_Name,LAST_NAME ORDER BY ShipTo_Num) ROWID
 FROM ADDR 
 ) 
 SELECT addr.first_name , addr.last_name, addr.order_num, addr.Update_Date_Time,
 ord.Order_Amt, item.Item_Desc
 FROM cte_addr addr
 inner join ORDER ord on ord.Order_num = addr.Order_Num
inner join ITEM item on ord.Order_num = item.Order_Num
 WHERE t.ROWID =1 
and addr.Order_Num in(
select Order_num from TOEADDR addr where
addr.ShipTo_Num = 0 and addr.EM_EMAIL_ADDR = 'avc@avc.com'
and addr.Update_Date_Time > DATEADD(year,-1,GETDATE()) 
 ) 
order by addr.Update_Date_Time desc

SQL Server根据特定的行号获取列

1 个答案: