我正在为一个字段计算加权公式为sum(revenue)/ Sum(qty)
,这是根据以下查询得出的。现在,我将创建一个视图,以存储这些结果,如下面的代码所示。
我的问题是,如果我从视图中选择w_revenue
并希望每年查看一次,我将如何汇总以每年显示呢?
select month, sum(revenue)/ Sum(qty) as w_revenue,
year
from my_revenue_table
group by month, year;
create view xyz_rev as
Select month, sum(revenue)/ Sum(qty) as w_revenue,
year
from my_revenue_table
group by month, year;
select year, w_revenue
from
xyz_rev ;
答案 0 :(得分:0)
您将再次聚合W_REVENUE
:
select year, sum(w_revenue)
from xyz_rev
group by year
答案 1 :(得分:0)
由于仅通过了解几个月的这些值就不可能获得今年的w_revenue
,因此我建议将视图更改为:
create view xyz_rev as
Select month, sum(revenue)/ Sum(qty) as w_revenue,
year
from my_revenue_table
group by ROLLUP(MONTH), year;
通过这种方式,您已经必须将年份数据与单个月的数据一起。