Question

我有这张桌子，向我展示了卖家的每周销售情况。我当前的查询（附件）只有两列。我想添加第三列，其中包含年初至今的销售数据。有人可以就此提供帮助，我可以添加到当前的SQL语句中吗？

select t2.Source, coalesce(t1."This Week",0) "This Week"
from sellers t2 left outer join
(select Source,min("Week") as Week, sum(Sales) "This Week"
from salesdata
where Week = date_trunc('week', now())::date - 1
group by Source, Week) t1
on t1.Source = t2.Source

当前结果：

Source            This Week

Judith              18
Thedia              64
Alfonso              0
Michael             15
Jordan               0

期望的结果：

Source            This Week             YTD

Judith              18                  100
Thedia              64                  150
Alfonso              0                  258 
Michael             15                  487 
Jordan               0                   78

Answer 1

假设您的表格中的字段week类型为date：

SELECT source, week, "This Week", "YTD"
FROM (
    SELECT source, week, coalesce(sum(sales), 0) AS "This Week"
    FROM salesdata
    WHERE week = date_trunc('week', now()) - 1) sw
JOIN (
    SELECT source, coalesce(sum(sales), 0) AS "YTD"
    FROM salesdata
    WHERE date_trunc('year', week) = date_trunc('year', now()) sy USING (source);

请注意，您不需要sellers表，所有信息都可以来自salesdata表。

用周显示年初至今

1 个答案: