Sql server SQL Server查询上次值和平均值

我需要为一个组（行id=1）获取“最后一个值”，为另一个组（行id=2）获取“平均值”

我正在尝试在SQLServer中编写SQL查询

以下是数据集和预期输出

Name         ROWID  Type    Company   Date      KPI
Activity Plan   1   Low       MS    1/01/2018   10
Activity Plan   1   Low       MS    1/02/2018   20
Activity Plan   1   Low       MS    1/03/2018   30
Activity Plan   1   Low       MS    1/04/2018   NULL
Activity Plan   1   Low       MS    1/05/2018   NULL
Activity Plan   1   Low       MS    1/06/2018   NULL
Activity Plan   1   Low       MS    1/07/2018   NULL
Appointment     2   High      MS    1/01/2018   15
Appointment     2   High      MS    1/02/2018   25
Appointment     2   High      MS    1/03/2018   25
Appointment     2   High      MS    1/04/2018   NULL
Appointment     2   High      MS    1/05/2018   NULL
Appointment     2   High      MS    1/06/2018   NULL
Appointment     2   High      MS    1/07/2018   NULL

预期产量

 Name         ROWID   Type  Company   Date     KPI   Value  
Activity Plan   1     Low    MS     1/01/2018   10   10 
Activity Plan   1     Low    MS     1/02/2018   20   20 
Activity Plan   1     Low    MS     1/03/2018   30   30 
Activity Plan   1     Low    MS     1/04/2018  NULL  30   last value
Activity Plan   1     Low    MS     1/05/2018  NULL  30   Last Value
Activity Plan   1     Low    MS     1/06/2018  NULL  30   Last Value
Activity Plan   1     Low    MS     1/07/2018  NULL  30   Last Value
Appointment     2     High   MS     1/01/2018   12   12 
Appointment     2     High   MS     1/02/2018   35   35 
Appointment     2     High   MS     1/03/2018   44   44 
Appointment     2     High   MS     1/04/2018   NULL 30.33  AVG Value
Appointment     2     High   MS     1/05/2018   NULL 30.33  AVG Value
Appointment     2     High   MS     1/06/2018   NULL 30.33  AVG Value
Appointment     2     High   MS     1/07/2018   NULL 30.33  AVG Value

我的尝试：

*

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*

请使用此选项来实现您的结果：

select 
     [name]     =   [name]      
    ,[rowid]    =   [rowid] 
    ,[type]     =   [type]          
    ,[company]  =   [company]     
    ,[date]     =   [date]      
    ,[kpi]      =   [kpi]   
    ,[value]    =   iif([rowid] = 1, isnull([kpi], [lvalue].[value]), isnull([kpi], [avgvalue].[value]))    
from
    #urgent as  [u]
outer apply
    (
        select top 1 [value] = [kpi] from #urgent where [rowid] = 1 and [kpi] is not null order by [date] desc 
    ) as [lvalue]
outer apply
    (
        select [value] = avg([kpi]) from #urgent where [rowid] = 2  and [kpi] is not null
    ) as [avgvalue];

---

完整脚本：

你能不能至少正确地编排你的问题格式，解释一下你尝试过什么，还有什么不起作用？在标题中加上***紧急***只会让你的帖子被忽略（你不应该依靠问答网站上的陌生人来挽救你的脖子）。如果问题紧急，在问题文本中写一个合适的标题和解释。否则，当人们开始询问你的意思以便他们能够提供帮助时，你将浪费大量时间。如果是“紧急情况”，请花时间以可消费的格式提供样本数据，并发布你尝试过的内容；您可能会更快得到答案：。你肯定会有更多用户的问题，你会更乐意回答，因为我们不会将数据转换成可用的格式（尽管至少它不是图像）。@Rich不得不说，你成就了我的一天。

select 
     [name]     =   [name]      
    ,[rowid]    =   [rowid] 
    ,[type]     =   [type]          
    ,[company]  =   [company]     
    ,[date]     =   [date]      
    ,[kpi]      =   [kpi]   
    ,[value]    =   iif([rowid] = 1, isnull([kpi], [lvalue].[value]), isnull([kpi], [avgvalue].[value]))    
from
    #urgent as  [u]
outer apply
    (
        select top 1 [value] = [kpi] from #urgent where [rowid] = 1 and [kpi] is not null order by [date] desc 
    ) as [lvalue]
outer apply
    (
        select [value] = avg([kpi]) from #urgent where [rowid] = 2  and [kpi] is not null
    ) as [avgvalue];

with cte as 
(    select Name, ROWID, Type, Company, Date, KPI 
          , max(kpi) over (partition by ROWID) as max 
          , avg(kpi) over (partition by ROWID) as avg
     from urgent  
)
select Name, ROWID, Type, Company, Date, KPI, isnull(KPI, max) as Value 
from cte 
where ROWID = 1 
union all
select Name, ROWID, Type, Company, Date, KPI, isnull(KPI, avg) as Value 
from cte 
where ROWID = 2