我正在按顺序为特定组创建运行总计。在序列之间出现零值,为此我必须从零记录开始运行总计
select
Sno,
Group,
Value,
sum(Value) over(partition by Group order by Sno) Cum_Value
from
Table
输出:
Sno Group Value CumValue
-------------------------------
1 A 5 5
2 A 10 15
3 A 25 40
4 A 0 40
5 A 10 50
6 A 5 55
7 A 0 55
7 A 20 75
Sno Group Value CumValue
------------------------------
1 A 5 5
2 A 10 15
3 A 25 40
4 A 0 0--> zero occurs [starts running total again]
5 A 10 10
6 A 5 15
7 A 0 0--> zero occurs [starts running total again]
7 A 20 20
您可以尝试以下方法:
输入:
CREATE TABLE #Data (
Sno int,
[Group] varchar(1),
[Value] int
)
INSERT INTO #Data
(Sno, [Group], [Value])
VALUES
(1, 'A', 5),
(2, 'A', 10),
(3, 'A', 25),
(4, 'A', 0),
(5, 'A', 10),
(6, 'A', 5),
(7, 'A', 0),
(8, 'A', 20)
声明:
SELECT
Sno,
[Group],
[Value],
Changed,
SUM([Value]) OVER (PARTITION BY Changed ORDER BY Sno) AS Cum_Value
FROM
(
SELECT
Sno,
[Group],
[Value],
SUM (CASE
WHEN [Value] = 0 THEN 1
ELSE 0
END) OVER (PARTITION BY [Group] ORDER BY Sno) AS Changed
FROM #Data
) t
输出:
Sno Group Value Cum_Value
1 A 5 5
2 A 10 15
3 A 25 40
4 A 0 0
5 A 10 10
6 A 5 15
7 A 0 0
8 A 20 20
本文收集自互联网,转载请注明来源。
如有侵权,请联系 [email protected] 删除。
我来说两句