Question

我已经使用NTILE尝试了一些查询，但它不适用于每年计算四分位数。 SQL查询如下。

select distinct datepart(Week,startingdate) as Week,datepart(year,startingdate) as years,sum(users+isnull(tbl_MobileGoogleAnalyticsData.M_Users,0)) as users 
into #googleanalyticsUsers  
from tbl_GoogleAnalyticsData 
left join tbl_MobileGoogleAnalyticsData on tbl_GoogleAnalyticsData.actualdate=tbl_MobileGoogleAnalyticsData.M_ActualDate   
group by datepart(Week,startingdate) ,datepart(year,startingdate)

select  distinct Week, years,users  from #googleanalyticsUsers order by years asc

select distinct week,NTILE(4) OVER(ORDER BY years DESC) AS Quartile,years 
from #googleanalyticsUsers 
order by years asc

问题是我有一周的数据，所以我需要每年的第13周（每季度一次）加总，这笔钱每年都会发生。怎么办请帮助我。

Answer 1

无论1月1日是哪一天，您的季度都是13周整整？在这种情况下（52*7=364），您的一个宿舍将额外增加1或2（闰年）天。您还将有超过52周的时间。您可以在实际的一天使用NTILE，而不是一周的开始。

在任何情况下，您都可以使用NTILE和Parition by以及Order by订购您的周，并将它们分组到几个季度。

以下是一系列日期

的示例

;With SequenceNum as
(
    Select ROW_NUMBER() Over (Order By C1.Ordinal_Position) Adder
    From INFORMATION_SCHEMA.COLUMNS C1, INFORMATION_SCHEMA.COLUMNS C2
),
DateList as
(
    Select DateAdd (D, Adder-1, '1/1/2000') as OneDate
    From SequenceNum
    Where Adder < (365 *10) /* only get 10 years of data*/
)
Select 
    OneDate, 
    DatePart (Year, OneDate) YearNum, 
    DatePart (Week, OneDate) WeekNum,
    NTILE(4) Over (Partition By DatePart (Year, OneDate) Order By DatePart (Week, OneDate)) TileValue
From DateList

如何编写每年计算四分位数的sql查询

1 个答案: