1

SQL Server 2008 R2

示例数据:

ownership  exact_opening_date
Type1       3/1/2002
Type1       1/4/2004
Owned       3/1/2002
Owned       3/31/2003
Owned       6/30/2004

我想按所有权类型逐年获得运行总数,但即使该年没有值,也要保持运行总数:

ownership open_date run_total
Type 1    2002      1
Type 1    2003      1  <-- here's my trouble
Type 1    2004      2

我可以得到运行总计,但是当我在那一年实际上没有值时,我不确定如何包括该运行总计。

这就是我现在正在做的事情:

WITH cte (
ownership
,open_date
,ct
)
AS (
    SELECT ownership
        ,year(exact_opening_date) AS open_date
        ,count(*) AS ct
    FROM studio_master
    GROUP BY ownership
        ,year(exact_opening_date)
    )
SELECT d1.ownership
    ,d1.open_date
    ,sum(d2.ct) AS run_total
FROM cte d1
LEFT JOIN cte d2 ON d1.open_date >= d2.open_date
    AND d1.ownership = d2.ownership
GROUP BY d1.ownership
    ,d1.open_date
    ,d1.ct
ORDER BY d1.ownership
    ,d1.open_date

我如何在那里获得那些“失踪”的总年数?

4

1 回答 1

4

您可以使用年份列表来加入反对。

您可以使用此问题的已接受答案中的“Itzik 的交叉连接 CTE 方法”作为年份列表的来源:SQL, Auxiliary table of numbers

于 2013-03-16T23:28:35.983 回答