因年份变化而重置的累计总和（SQL 服务器）

Question

我用的是SQLServer 2017，我想总结一下当年和工厂一年每个月的预算。

此累积将在每个新的一年重置。

Table 架构：

CREATE TABLE [TABLE_1] 
(
    FACTORY varchar(50) Null,
    DATE_YM int Null,
    BUDGET int NULL,
);

INSERT INTO TABLE_1 (FACTORY, DATE_YM, BUDGET)
VALUES ('A', 202111, 1),
       ('A', 202112, 1),
       ('A', 202201, 10),
       ('A', 202202, 100),
       ('A', 202203, 1000),
       ('B', 202111, 2),
       ('B', 202112, 2),
       ('B', 202201, 20),
       ('B', 202202, 200),
       ('B', 202203, 2000),
       ('C', 202111, 3),
       ('C', 202112, 3),
       ('C', 202201, 30),
       ('C', 202202, 300),
       ('C', 202203, 3000);

LINK TO db<>fiddle

想要的结果

FACTORY	DATE_YM	C_BUDGET_SUM
A	202111	1
A	202112	2
A	202201	10
A	202202	110
A	202203	1110
B	202111	2
B	202112	4
B	202201	20
B	202202	220
B	202203	2220
C	202111	3
C	202112	6
C	202201	30
C	202202	330
C	202203	3330

我的做法：

WITH data AS
(
    SELECT
        T1.FACTORY,
        T1.DATE_YM,
        T1.BUDGET
    FROM
        TABLE_1 AS T1
)
SELECT
    FACTORY,
    DATE_YM,
    SUM(BUDGET) OVER (ORDER BY FACTORY, DATE_YM ASC 
                      ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS 'C_BUDGET_SUM'
FROM
    data

此查询跨年末的总计。如何动态实现年休假？

Answer 1

CTE 不是必需的，但我假设这是一个简化版本。

扩展我的评论

with data as (
select
  T1.FACTORY,
  T1.DATE_YM,
  T1.BUDGET
from TABLE_1 as T1
)
select
FACTORY,
  DATE_YM,
  sum(BUDGET) over (partition by Factory,left(Date_YM,4) order by DATE_YM asc rows between unbounded preceding and current row) as 'C_BUDGET_SUM'
from data

结果

因年份变化而重置的累计总和（SQL 服务器）

Cumulative sum reset by change of year (SQL Server)

sql

sql-server

sum

common-table-expression