从每日销售额计算每周和每月的销售额

Question

如果我有每日销售额，我如何在 oracle 的单个记录中显示每周和每月的销售额以及每天的销售额？ 我可以在单独的表中计算每周总和和每月总和，但我想在单个数据集中计算结果。

输出应如下所示。

Date      Week  Month   Daily_Sale    Weekly_Sale Monthly_Sale
1/1/20      1      1        $5            $5          $5
1/2/20      1      1        $5            $10         $10
1/3/20      1      1        $1            $11         $11
1/4/20      1      1        $2            $13         $13
1/5/20      1      1        $5            $18         $18
1/6/20      1      1        $1            $19         $19
1/7/20      1      1        $1            $20         $20
1/8/20      2      1        $5            $5          $25
1/8/20      2      1        $5            $10         $30
1/10/20     2      1        $1            $11         $31
1/11/20     2      1        $2            $13         $33
1/12/20     2      1        $5            $18         $38
1/13/20     2      1        $1            $19         $39
1/14/20     2      1        $1            $20         $40

谢谢！

编辑：突出显示表格

Answer 1

您似乎想要运行总计。 假设您的表包含超过一年的销售信息，您还需要按年份进行分区。

select Date, extract(week from Date) Wk, extract(year from Date) Yr,
    Daily_Sale,
    sum(Daily_Sale) over (
        partition by extract(year from Date), extract(week from Date)
        order by Date
    ) as Weekly_Sale
    sum(Daily_Sale) over (
        partition by extract(year from Date), extract(month from Date)
        order by Date
    ) as Monthly_Sale
from T
order by Date;

Answer 2

我没有 oracle 编译器，所以我在 SSMS 中复制了这个场景。 这是查询：

SELECT T1.D1, T1.AnnualSales, T1.MonthlySales, T1.WeeklySales, T1.DailySales
 From
(SELECT [Date] As D1,
      Sum([Sales]) Over (Partition by Year(Date)) as AnnualSales,
      Sum([Sales]) Over (Partition by Month(Date)) as MonthlySales,
      Sum([Sales]) Over (Partition by Datepart(wk,Date)) as WeeklySales,
      Sum([Sales]) Over (Partition by Day(Date)) as DailySales
  FROM [dbo].[DailySales_Test]) AS T1
  Group by T1.D1, T1.AnnualSales, T1.MonthlySales, T1.WeeklySales, T1.DailySales