CASE 条件和 SUM() 常用 table 表达式或 Group By

Question

希望有人能帮忙？我有一个第三方软件，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。

我是使用 GROUP BY 还是 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

这给我下面的结果。我已经删除了最后一个 select 中的 Where c=1 ，我将把它放回最终查询中，它按时间给我第一个结果，这就是我想要的。我正在努力的一点是。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总数。然后在最终查询中将服务和产品合计起来。

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。查询的最后部分如下。我只能在第 3 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便人们理解。感谢您提供的任何帮助。

Answer 1

似乎您只需要将两个 Group Sums 添加到您现有的 CTE，然后将它们添加到您的最终 Select:

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，ROW_NUMBER 上的 ORDER BY tblTicketsRow.fldTicketID 不是基于唯一的列，因此无法保证行的顺序。您可能需要 order by tblTicketsRow.fldStartTime。

CASE 条件和 SUM() 常用 table 表达式或 Group By

CASE condition and SUM() common table expressions or Group By

sql

sum

case

sql-order-by

common-table-expression