各年累计答案

【问题标题】：Cumulative Total by year各年累计
【发布时间】：2019-08-20 11:51:07
【问题描述】：

所以，我有以下查询，

WITH yearlist AS 
(   
SELECT (year(getdate())+3) AS years
    UNION ALL
SELECT   y.years - 1 AS years
FROM     yearlist y
WHERE    y.years - 1 >= (YEAR(GETDATE())-10)
 ) 


SELECT 
a.years as [year],
a.CountryName as country,
  ISNULL(sum(b.sales), 0) as total


  FROM(
  SELECT 

distinct years
 ,g.CountryName
    FROM
    yearlist AS A CROSS JOIN  (SELECT 
                                        CountryName, salesYear,  ISNULL(sum(sales), 0) as total
                                                        FROM tblSales where
                salesYear BETWEEN (year(getdate())-12) AND (year(getdate()) + 3)                                        

            ,sales
            ,salesYear) g 



    ) a left outer join

                                        (SELECT 
                                        CountryName, salesYear,  ISNULL(sum(sales), 0) as total
                                                        FROM tblSales where
                salesYear BETWEEN (year(getdate())-12) AND (year(getdate()) + 3)                                        

             group by CountryName

            ,salesYear, sales
            ) b ON a.CountryName=b.CountryName and a.years=b.salesYear

group by a.CountryName,years
order by years

我得到以下返回：

year        country                                  Total
---------- ---------------------------------------- -------
2009        France                                   0.00
2009        Japan                                    0.00
2009        Norway                                   2.30
2009        Portugal                                 0.00
2009        South Korea                              0.00
2009        Spain                                    0.00
2009        Sweden                                   0.00
2009        United Kingdom                           0.00
2009        United States                            0.00
2010        France                                   0.00
2010        Japan                                    0.00
2010        Norway                                   0.00
2010        Portugal                                 0.00
2010        South Korea                              0.00
2010        Spain                                    0.00
2010        Sweden                                   0.00
2010        United Kingdom                           0.00
2010        United States                            0.00
2011        France                                   0.00
2011        Japan                                    0.00
2011        Norway                                   0.00
2011        Portugal                                 2.00
2011        South Korea                              0.00
2011        Spain                                    0.00
2011        Sweden                                   0.00
2011        United Kingdom                           0.00
2011        United States                            0.00
2012        France                                   0.00
2012        Japan                                    0.01
2012        Norway                                   0.00
2012        Portugal                                 0.00
2012        South Korea                              0.00
2012        Spain                                    0.00
2012        Sweden                                   0.00
2012        United Kingdom                           0.00
2012        United States                            0.00
2013        France                                   0.00
2013        Japan                                    2.00
2013        Norway                                   0.00
2013        Portugal                                 0.00
2013        South Korea                              0.00
2013        Spain                                    0.00
2013        Sweden                                   0.00
2013        United Kingdom                           0.00
2013        United States                            0.00

随着年份的增加，我正在努力实现每个国家/地区的累计总数。但我似乎无法得到它。我试过这个：

 sum(sales) over (order by salesYear rows unbounded preceding) as total

但这只是用累积总数填充每一行。

我想要的输出如下：

year        country                                  Total
---------- ---------------------------------------- -------
2009        France                                   0.00
2010        France                                   0.00
2011        France                                   0.00
2009        Japan                                    0.00
2010        Japan                                    0.00
2011        Japan                                    0.00
2009        Norway                                   2.30
2010        Norway                                   2.30
2011        Norway                                   2.30
2009        Portugal                                 0.00
2010        Portugal                                 0.00
2011        Portugal                                 2.00
2009        South Korea                              0.00
2010        South Korea                              0.00
2011        South Korea                              0.00
2009        Spain                                    0.00
2010        Spain                                    0.00
2011        Spain                                    0.00
2009        Sweden                                   0.00
2010        Sweden                                   0.00
2011        Sweden                                   0.00
2009        United Kingdom                           0.00
2010        United Kingdom                           0.00
2011        United Kingdom                           0.00
2009        United States                            0.00
2010        United States                            0.00
2011        United States                            0.00

我似乎无法让它们单独累积。

【问题讨论】：

请出示您的原始数据。或者更好的是，还可以创建一个小提琴。

标签： sql sql-server tsql window-functions

【解决方案1】：

您很可能也需要一个 partition by 子句：

sum(sum(sales)) over (partition by country order by salesYear rows unbounded preceding)

【讨论】：

你已经成功了。