Question

想知道是否有人可以帮助我。我有一个包含以下字段的简单表格。

ID（int）， TimeStamp（DateTime），状态（NvarChar）

我需要在10分钟的插槽中生成一个包含所有状态计数的表格，如同提供的示例一样。我们的想法是在仪表板中生成Google Line Chart，每10分钟刷新一次。

实施例： Table

任何帮助将不胜感激。

何

Answer 1

你可以使用递归cte创建你的时间段并加入它。

with cte as (
    select  DATETIMEFROMPARTS(datepart(year,getdate()), datepart(month,getdate()), datepart(day,getdate()), datepart(hour, getdate()), floor((datepart(minute, getdate()) - 9) / 10) * 10, 0, 0) as startDT,
            DATETIMEFROMPARTS(datepart(year,getdate()), datepart(month,getdate()), datepart(day,getdate()), datepart(hour, getdate()), floor((datepart(minute, getdate()) + 9) / 10) * 10, 0, 0) as endDT
    union all
    select  DATEADD(minute, -10, startDT),
            DATEADD(minute, -10, endDt)
    from    cte 
    where   DATEADD(minute, -130, getdate()) < DATEADD(minute, -10, startDT)
)
select      endDt as [Period],
            count(case when [Status] = 'OK' then 1 end) as Status_OK,
            count(case when [Status] <> 'OK' then 1 end) as Status_NOK
from        cte
left join   myTable on [TimeStamp] >= startDT and [TimeStamp] < endDT
group by    endDT

如果您更喜欢使用dateadd，那么

;with cte as (
    select  dateadd(minute, datediff(minute, 0, getdate()) / 10 * 10, 0) as startDT,
            dateadd(minute, datediff(minute, 0, getdate()) / 10 * 10 + 10, 0)  as endDT
    union all
    select  dateadd(minute, -10, startDT),
            dateadd(minute, -10, endDt)
    from    cte 
    where   dateadd(minute, -130, getdate()) < dateadd(minute, -10, startDT)
)
select      endDt as [Period],
            count(case when [Status] = 'OK' then 1 end) as Status_OK,
            count(case when [Status] <> 'OK' then 1 end) as Status_NOK
from        cte
left join   myTable on [TimeStamp] >= startDT and [TimeStamp] < endDT
group by    endDT

SQL查询|总结TimeSeries

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