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sql - CASE 条件和 SUM() 公用表表达式或 Group By

问题描述

希望有人能帮忙？我有一个第 3 方软件，我可以进行自定义 sql 查询，但不能更改任何数据库。努力得到我想要的结果。

我是否使用 GROUP BY 或 CTE 来获得我需要的结果？

WITH CTE AS ( 
SELECT  tblTicketsSummary.fldDateScheduled AS [Scheduled], 
tblTicketsRow.fldStartTime  AS [TIME], tblTicketsRow.fldPs AS 
[s],tblTicketsRow.fldPrice AS PR, 
tblTicketsSummary.fldFirstName+' '+tblTicketsSummary.fldLastName 
AS [Client], ROW_NUMBER() OVER 
(PARTITION BY tblTicketsSummary.fldTicketID ORDER BY 
tblTicketsRow.fldTicketID) AS C, tblTicketsSummary.fldDateClosed 
AS [Date Closed],
 CASE WHEN tblTicketsRow.fldPs ='p' THEN tblTicketsRow.fldPrice  
ELSE £0.00 END AS Product,  
CASE WHEN tblTicketsRow.fldPs ='s' THEN tblTicketsRow.fldPrice  
ELSE £0.00 END AS Services, 
FROM tblTicketsSummary INNER JOIN 
tblTicketsRow ON tblTicketsSummary.fldTicketID = tblTicketsRow.fldTicketID
 WHERE (fldDateVoided IS NULL) AND (NOT(fldDateClosed IS NULL)) 
GetUserDate('AND','fldDateClosed','') AND tblTicketsRow.fldEmployeeName ='Tina Young' 
 AND tblTicketsSummary.fldTotal >1 )
SELECT * FROM  CTE   ORDER BY   Scheduled ASC,  TIME ASC

这给了我下面的结果。我在最后一次选择中删除了 Where c=1 ，我将把它放回最终查询中，这给了我第一个结果，这是我想要的。我正在努力解决的问题是。我想将所有产品的价格和所有服务的价格加在一起，得出销售的产品和服务的总和。然后将服务和产品的总和放在一起进行最终查询。

Scheduled   TIME s   PR      Client   C Date Closed Product  Services  Total
17/07/2020 17:00 S £10.00 Ben Preston 1 17/07/2020  £0.00    £10.00     s+p
17/07/2020 17:45 S £1.00  Ben Preston 2 17/07/2020  £0.00    £1.00      s+p
17/07/2020       P £19.00 Ben Preston 3 17/07/2020  £19.00   £0.00      s+p
17/07/2020       P £10.00 Ben Preston 4 17/07/2020  £10.00   £0.00      s+p

我想要的结果如下。查询的最后一部分如下。我只能在 3rd 方软件中自定义查询。

 SELECT * FROM  CTE  WHERE c=1 ORDER BY   Scheduled ASC,  TIME ASC 


Scheduled  TIME   Client       C   Date Closed  Product Services   Total
17/07/2020 17:00 Ben Preston   1   17/07/2020   £29.00   £11.00    £40.00

我希望我已经格式化了这个权利以供人们理解。感谢您提供任何帮助。

标签： sqlsumsql-order-bycasecommon-table-expression

解决方案

似乎您只需将两个组总和添加到您现有的 CTE 中，然后将它们添加到您的最终选择中：

WITH CTE AS ( 
SELECT  tblTicketsSummary.fldDateScheduled AS [Scheduled], 
   tblTicketsRow.fldStartTime  AS [TIME], 
   tblTicketsRow.fldPs AS [s],tblTicketsRow.fldPrice AS PR, 
   tblTicketsSummary.fldFirstName+' '+tblTicketsSummary.fldLastName AS [Client], 
   ROW_NUMBER() 
   OVER (PARTITION BY tblTicketsSummary.fldTicketID
         ORDER BY tblTicketsRow.fldStartTime) AS C, 
   tblTicketsSummary.fldDateClosed AS [Date Closed],
   
   SUM(CASE WHEN tblTicketsRow.fldPs ='p' THEN tblTicketsRow.fldPrice ELSE £0.00 END)
   OVER (PARTITION BY tblTicketsSummary.fldTicketID) AS Product,  
   
   SUM(CASE WHEN tblTicketsRow.fldPs ='s' THEN tblTicketsRow.fldPrice ELSE £0.00 END)
   OVER (PARTITION BY tblTicketsSummary.fldTicketID) AS Services
FROM tblTicketsSummary
INNER JOIN tblTicketsRow
ON tblTicketsSummary.fldTicketID = tblTicketsRow.fldTicketID
WHERE (fldDateVoided IS NULL) AND (NOT(fldDateClosed IS NULL)) 
--GetUserDate('AND','fldDateClosed','') AND tblTicketsRow.fldEmployeeName ='Tina Young' 
 AND tblTicketsSummary.fldTotal >1 )
SELECT cte.*,
   Product + Services as total
FROM  CTE
WHERE C = 1
ORDER BY   Scheduled ASC,  TIME ASC;

顺便说一句，ORDER BY tblTicketsRow.fldTicketID您的 ROW_NUMBER 不是基于唯一列，因此不能保证行的顺序。你可能想要order by tblTicketsRow.fldStartTime。

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