SQL 查询的输出不正确（状态多行）

Question

下面是我为获取补丁合规性状态而编写的查询。

 select 
vUI.Title As 'Title',
vui.ArticleID, 
CASE 
    WHEN vsn.StateID = 0 or vsn.StateID = 1 or vsn.StateID =  2 THEN --'No Status'
    count(vRSV.Netbios_Name0) 
END As 'No Status',
CASE
    WHEN vsn.StateID = 3 or vsn.StateID = 4 or vsn.StateID = 5 or vsn.StateID = 7 or vsn.StateID = 8 or vsn.StateID = 12 or vsn.StateID = 14 THEN --'In Progress'
    count(vRSV.Netbios_Name0) 
end as 'In Progress',
Case
    WHEN vsn.StateID = 6 or vsn.StateID = 11 or vsn.StateID = 14 THEN --'Failed'
    count(vRSV.Netbios_Name0) 
End as 'Failed',
Case
    WHEN vsn.StateID = 9 or vsn.StateID = 10 THEN --'Success'
    count(vRSV.Netbios_Name0) 
    --ELSE 'Not Installed'
END As Success
from v_UpdateComplianceStatus vUCS
join v_UpdateInfo vUI
  on vUCS.CI_ID=vUI.CI_ID
  join v_R_System_Valid vRSV  on vUCS.ResourceId=vRSV.resourceid
inner join v_FullCollectionMembership_Valid vFCMV
  on vUCS.ResourceId=vFCMV.ResourceID
  and vFCMV.CollectionID='CB00123' 
join v_GS_OPERATING_SYSTEM vGOS
    on vUCS.ResourceID = vGOS.ResourceID
join v_StateNames vSN
  on vUCS.LastEnforcementMessageID = vSN.StateID and (vSN.TopicType=402 or vSN.TopicType=500 or vSN.TopicType=400)
where vui.DateLastModified between '2019-09-12' and '2019-10-12'
  group by vUI.Title,vui.ArticleID, vsn.StateID

我期待如下输出。

ArticleID   No Status   In Progress Failed  Success
4516033     NULL          8           102   2149

但是输出如下。

ArticleID   No Status   In Progress Failed  Success
4516033     NULL          NULL        25    NULL
4516033     NULL          NULL        NULL  253
4516033     NULL          NULL       NULL   1896
4516033     NULL          NULL        69    NULL
4516033     NULL           8           8    NULL

我做错了什么？

Answer 1

您需要条件聚合。 CASE 是聚合函数的参数。所以：

select vUI.Title As Title, vui.ArticleID, 
       sum(case when vsn.StateID in (0, 1, 2)
                then 1 else 0 
           end) as no_status,
       sum(case when vsn.StateID in (3, 4, 5, 7, 8, 12, 14)
                then 1 else 0 
           end) as in_progress,
       . . . 
from . . .
group by vUI.Title As Title, vui.ArticleID;

请注意，您需要同时更改、SELECT 和 GROUP BY。

还有：

不要对列别名使用单引号。那只会引起混乱。单引号只能用于字符串和日期常量。
选择不需要转义的列别名（避免空格）。
IN 简化您的比较。

Answer 2

您应该尝试对每个值求和，而不是在每一行上使用 count()

select 
vUI.Title As 'Title',
vui.ArticleID, 
sum ( CASE 
      WHEN vsn.StateID = 0 
        or vsn.StateID = 1 or vsn.StateID =  2 THEN  1 else 0 
      END  ) As 'No Status',

sum ( case 
      WHEN vsn.StateID = 3 or vsn.StateID = 4 or vsn.StateID = 5 
              or vsn.StateID = 7 or vsn.StateID = 8 
               or vsn.StateID = 12 or vsn.StateID = 14 THEN 1 else 0 

       end ) as 'In Progress',

 sum( CASE  
      WHEN vsn.StateID = 6 or vsn.StateID = 11
          or vsn.StateID = 14 
     THEN 1 else 0 

     End ) as 'Failed',
   sum( CASE WHEN vsn.StateID = 9 or vsn.StateID = 10 
      THEN 1 else 0
     END ) As Success
from v_UpdateComplianceStatus vUCS
join v_UpdateInfo vUI
  on vUCS.CI_ID=vUI.CI_ID
  join v_R_System_Valid vRSV  on vUCS.ResourceId=vRSV.resourceid
inner join v_FullCollectionMembership_Valid vFCMV
  on vUCS.ResourceId=vFCMV.ResourceID
  and vFCMV.CollectionID='CB00123' 
join v_GS_OPERATING_SYSTEM vGOS
    on vUCS.ResourceID = vGOS.ResourceID
join v_StateNames vSN
  on vUCS.LastEnforcementMessageID = vSN.StateID and (vSN.TopicType=402 or vSN.TopicType=500 or vSN.TopicType=400)
where vui.DateLastModified between '2019-09-12' and '2019-10-12'
  group by vUI.Title,vui.ArticleID

SQL 查询的输出不正确（状态多行）

Output of SQL query is not coming properly (multiple Lines for status)

sql

sql-server

sccm