Question

使用下面定义的FACT_SALES和DIM_SELLERS表，我需要一个查询，该查询仅返回每个年龄段内过去十二个月收入最高的卖家（<30天，31-90天，91-120天，> 120天）。

Age = elapsed time to - date since seller start day

表FACT_SALES

dim_seller_sk BIGINT,
sale_day DATE,
net_units INT,
total_sales_revenue FLOAT

表DIM_SELLERS

dim_seller_sk BIGINT,
seller_name VARCHAR(250),
seller_start_day DATE`

我正在尝试达到这样的年龄：

WITH ages AS
(
    SELECT
        seller_name,
        ROUND(DATEDIFF(day, GETDATE(), seller_start_day), 0) AS age
    FROM 
        dbo.dim_sellers
),
cte2 AS
(
    SELECT
        ages.seller_name,
        CASE
           WHEN ages.age <= 30 THEN '<= 30 days'
           WHEN ages.age >= 31 AND ages.age <= 90 THEN '31-90 days'
           WHEN ages.age >= 91 AND ages.age <= 120 THEN '91-120 days'
           WHEN ages.age >= 120 THEN '> 120 days'
        END AS age_category
    FROM 
        ages
)
SELECT
    'revenue logic',
    cte2.seller_name,
    cte2.age_category
FROM
    dbo.FACT_SALES, cte2
GROUP BY
    cte2.seller_name, cte2.age_category

如何计算此收入？正如我得到的age_category。我可以在单个select语句中从表和cte中进行选择吗？

难题的一部分是收益逻辑。我可以得到一些有关如何实现该目标的提示。

Answer 1

您只需要一个合适的JOIN吗？

with ages as (
      select s.*,
             ROUND(DATEDIFF(day, getdate(),seller_start_day), 0) as age
      from dbo.dim_sellers s
     ),
     cte2 as (
      select ages.*,
             (case when ages.age <= 30 then '<=30 days'
                   when ages.age <= 90 then '31-90 days'
                   when ages.age <= 120 then '91-120 days'
                   else '>120 days'
              end
             ) as age_category
       from ages
      )
select 'revenue logic', cte2.seller_name, cte2.age_category,
       sum(s.total_sales_revenue)
from dbo.FACT_SALES s join
     cte2
     on cte2.dim_seller_sk = s.dim_seller_sk
where s.sale_day >= dateadd(month, -12, getdate())
group by cte2.seller_name, cte2.age_category;

如何按年龄分组计算最近12个月的收入

1 个答案: