Sql server 如何在SELECT语句中避免部分百分比的SELECT计数

我想在这里计算每个站点名称的部分百分比，但我会 需要计算我的行的合计计数

下面的查询可以工作，但是有没有一种方法不使用SELECT 在SELECT语句中，还是为此声明变量？我只有这么多的阅读权限 我不能声明变量

SELECT

ServiceSiteName   
, COUNT(*)                                  AS [Alarms Resolved]
-- How can I avoid this.
, (SELECT COUNT(1) FROM [C1Datastore].[dbo].[Fct_AlertCRM_Incident] 
    WHERE Conditions A, B, C)       AS [Total Count]
    
, COUNT(*) / (SELECT COUNT(1) FROM [C1Datastore].[dbo].[Fct_AlertCRM_Incident] 
    WHERE Conditions A, B, C)       AS [% Count]

FROM TableX
WHERE Conditions A, B, C

GROUP BY 
ServiceSiteName

ORDER BY [Alarms Resolved]  DESC

关键是在（分区）上使用SUM（COUNT（）），这要短得多

SELECT

ServiceSiteName   
, COUNT(*)                                  AS [Alarms Resolved]

    
-- Use this 
, SUM(COUNT(1)) OVER (PARTITION BY ServiceSiteName)     AS [TOTAL]
, COUNT(*) / SUM(COUNT(1)) OVER (PARTITION BY ServiceSiteName)         AS [% Count]


FROM TableX
WHERE Conditions A, B, C

GROUP BY 
ServiceSiteName

ORDER BY [Alarms Resolved]  DESC

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为什么投反对票？