[英]Select Distinct Case Query
我有以下查询
SELECT Distinct dbo.WSUS_ComputerUpdateStatusWithApprovals.fulldomainname AS [Computer Name]
,dbo.WSUS_ComputerUpdateStatusWithApprovals.title AS [Update Title]
,count((case when (DATEDIFF(day, [ArrivalDate], GetDate())) > '0' and (DATEDIFF(day, [ArrivalDate], GetDate())) < '31' Then '' End)) AS 'Green'
,count((case when (DATEDIFF(day, [ArrivalDate], GetDate())) > '31' and (DATEDIFF(day, [ArrivalDate], GetDate())) < '91' then '' End)) AS 'Yellow'
,count((case when (DATEDIFF(day, [ArrivalDate], GetDate())) > '90' then '' End)) AS 'Red'
,DATEDIFF(day, [ApprovalCreationDate], GetDate()) AS 'DaysOldSinceApproval'
FROM dbo.WSUS_ComputerUpdateStatusWithApprovals
WHERE dbo.WSUS_ComputerUpdateStatusWithApprovals.IsApproved = 1
Group by dbo.WSUS_ComputerUpdateStatusWithApprovals.fulldomainname
,[ArrivalDate]
,dbo.WSUS_ComputerUpdateStatusWithApprovals.ApprovalCreationDate
,dbo.WSUS_ComputerUpdateStatusWithApprovals.title
ORDER BY dbo.WSUS_ComputerUpdateStatusWithApprovals.fulldomainname ASC
结果集如下所示:
我希望它说计算机名称和每个绿色,黄色,红色的总数。 所以在这种情况下,计算机名称,绿色 = 3,黄色 = 1 和红色 = 1。我包括标题和天数以显示附加信息。
如果我正确地跟着你,你只需要更改group by
子句,以便每个fulldomainname
生成一行:
select
fulldomainname AS [Computer Name],
sum(case when datediff(day, [ArrivalDate], GetDate()) between 1 and 30 then 1 else 0 end) AS Green,
sum(case when datediff(day, [ArrivalDate], GetDate()) between 30 and 90 then 1 else 0 end) AS Yellow,
sum(case when datediff(day, [ArrivalDate], GetDate()) > 90 then 1 else 0 end) AS Red
from dbo.WSUS_ComputerUpdateStatusWithApprovals
where IsApproved = 1
group by fulldomainname
order by fulldomainname ASC
请注意,我将条件聚合逻辑更改为使用sum()
而不是count()
,因为它似乎更容易理解。
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