Question

我是新手并在Microsoft SQL Server 2008上学习SQL。我正在尝试对订单行项目表执行以下操作，每个记录都是一个订单项。任何只有一条记录和代码为#####的交易号。我尝试了很多方法，但一直无法弄清楚

Select * from Table
where count(transactionnumber)<2 and Code='9987'

我想我明白了。不得不使用不同的代码，因为QA没有与该代码不同的行。如果您发现可能导致问题的任何问题，请告诉我。

Select * from (select Orders.TransactionNumber from Orders
group by Orders.TransactionNumber
having COUNT (Orders.TransactionNumber)=1) as transa

Inner join Orders on transa.TransactionNumber=Orders.TransactionNumber 

where ItemCode=9803

结束此代码

  use XXX
  Select Orders.TransactionNumber,Orders.RepNumber, Orders.CustomerID,Orders.ShipToId,orders.ItemCode,Orders.Quantity,Orders.ReceivedDate,Orders.TransmitStatus from (select TransactionNumber from Orders
 group by TransactionNumber
 having COUNT (TransactionNumber)=1) as transa
 Inner join Orders on Orders.TransactionNumber=transa.TransactionNumber
 where ItemCode=9987 and ReceivedDate > DateADD (day, -1, GetDate() )
 IF @@ROWCOUNT > 0
 BEGIN
  EXEC msdb.dbo.sp_send_dbmail
  recipients=N'XXXX',
  @body='Merchandisers orders with only Item Code 9803',
  @subject ='only Item Code 9803',
  @profile_name ='',
  @query =  'Select Orders.TransactionNumber,Orders.RepNumber,Orders.CustomerID,Orders.ShipToId,orders.ItemCode,Orders.Quantity,Orders.ReceivedDate,Orders.TransmitStatus from(select TransactionNumber from Orders
 group by TransactionNumber
 having COUNT (TransactionNumber)<2) as transa
 Inner join Orders on Orders.TransactionNumber=transa.TransactionNumber
 where ItemCode=9803 and ReceivedDate > DateADD (day, -1, GetDate() )'
 END'

Answer 1

您的查询应该包含要分组的内容（Name，TransactionNumber等）进行计数和约束。

SELECT TransactionCode, COUNT(*)
FROM TABLE
GROUP BY TransactionCode
HAVING COUNT(*) < 2
AND ItemCode = 9987

Answer 2

您可以考虑使用OVER关键字，这样就不需要在count(*)和group by周围捣乱了。这样你就可以在没有分组的情况下看到计数。

Select *, count(*) over (partition by transactioncode) as "TheCounts"
from table
--where itemcode = 9903

或

Select *, count(*) over (partition by transactioncode, itemcode) as "TheCounts"
from table
--where itemcode = 9903

Answer 3

以下是我最终得到的结果似乎正常工作大约一周，现在它只在有记录时执行sp_send_dbmail。

 Select Orders.TransactionNumber, Orders.RepNumber, Orders.CustomerID,Orders.ShipToId,orders.ItemCode,Orders.Quantity,Orders.ReceivedDate,Orders.TransmitStatus from (select TransactionNumber from Orders
 group by TransactionNumber
 having COUNT (TransactionNumber)=1) as transa

 Inner join Device_Orders on Orders.TransactionNumber=transa.TransactionNumber

 where ItemCode=9987 and ReceivedDate > DateADD (day, -1, GetDate() )

 IF @@ROWCOUNT > 0

选择并计算语句

3 个答案: