SQL - 运行 数据已分组时的总数
SQL - running total when data already grouped
我正在尝试对某些数据进行 运行 总计,并且已经看到了实现此操作的简单方法。但是,我已经对一些数据进行了分组,这会影响我的代码。我目前有日期和付款类型,以及与之相关的总计。
我现在有的是:
create table #testdata
(
mdate date,
pmttype varchar(64),
totalpmtamt int
)
insert into #testdata
select getdate()-7, 'DD', 10
union
select getdate() -7, 'SO', 12
union
select getdate()-6, 'DD', 3
union
select getdate()-5, 'DD', 13
union
select getdate()-5, 'SO', 23
union
select getdate()-5, 'PO', 8
我想要的是:
mdate | paymenttype | totalpmtamt | incrtotal
2016-08-29 | DD | 10 | 10
2016-08-29 | SO | 12 | 22
2016-08-30 | DD | 3 | 25
2016-08-31 | DD | 13 | 38
2016-08-31 | SO | 8 | 46
2016-08-31 | PO | 23 | 69
我已经尝试将我在此处找到的其他代码改编成:
select t1.mdate,
t1.pmttype,
t1.totalpmtamt,
SUM(t2.totalpmtamt) as runningsum
from #testdata t1
join #testdata t2 on t1.mdate >= t2.mdate and t1.pmttype >= t2.pmttype
group by t1.mdate, t1.pmttype, t1.totalpmtamt
order by t1.mdate
但我得到的只是
mdate | paymenttype | totalpmtamt | incrtotal
2016-08-29 | DD | 10 | 10
2016-08-29 | SO | 12 | 22
2016-08-30 | DD | 3 | 13
2016-08-31 | DD | 13 | 26
2016-08-31 | SO | 8 | 34
2016-08-31 | PO | 23 | 69
有人可以帮忙吗?
计算累加和的 ANSI 标准方法是:
select t.*, sum(totalpmtamt) over (order by mdate) as runningsum
from #testdata t
order by t.mdate;
并非所有数据库都支持此功能。
如果您的数据库不支持该功能,我会使用相关子查询:
select t.*,
(select sum(t2.totalpmtamt)
from #testdata t2
where t2.mdate <= t.mdate
) as runningsum
from #testdata
order by t.mdate;
使用以下查询获得所需结果(对于 SQL 服务器)。
with cte_1
as
(SELECT *,ROW_NUMBER() OVER(order by mdate ) RNO
FROM #testdata)
SELECT mdate,pmttype,totalpmtamt,(select sum(c2.totalpmtamt)
from cte_1 c2
where c2.RNO <= c1.RNO
) as incrtotal
FROM cte_1 c1
输出:
听起来像 SQL 服务器。
DECLARE @testdata TABLE
(
mdate DATE ,
pmttype VARCHAR(64) ,
totalpmtamt INT
);
INSERT INTO @testdata
( mdate, pmttype, totalpmtamt )
VALUES ( GETDATE() - 7, 'DD', 10 ),
( GETDATE() - 7, 'SO', 12 ),
( GETDATE() - 6, 'DD', 3 ),
( GETDATE() - 5, 'DD', 13 ),
( GETDATE() - 5, 'SO', 23 ),
( GETDATE() - 5, 'PO', 8 );
SELECT *,
SUM(totalpmtamt) OVER ( ORDER BY mdate ROWS UNBOUNDED PRECEDING )
AS RunningTotal
FROM @testdata t;
我正在尝试对某些数据进行 运行 总计,并且已经看到了实现此操作的简单方法。但是,我已经对一些数据进行了分组,这会影响我的代码。我目前有日期和付款类型,以及与之相关的总计。
我现在有的是:
create table #testdata
(
mdate date,
pmttype varchar(64),
totalpmtamt int
)
insert into #testdata
select getdate()-7, 'DD', 10
union
select getdate() -7, 'SO', 12
union
select getdate()-6, 'DD', 3
union
select getdate()-5, 'DD', 13
union
select getdate()-5, 'SO', 23
union
select getdate()-5, 'PO', 8
我想要的是:
mdate | paymenttype | totalpmtamt | incrtotal
2016-08-29 | DD | 10 | 10
2016-08-29 | SO | 12 | 22
2016-08-30 | DD | 3 | 25
2016-08-31 | DD | 13 | 38
2016-08-31 | SO | 8 | 46
2016-08-31 | PO | 23 | 69
我已经尝试将我在此处找到的其他代码改编成:
select t1.mdate,
t1.pmttype,
t1.totalpmtamt,
SUM(t2.totalpmtamt) as runningsum
from #testdata t1
join #testdata t2 on t1.mdate >= t2.mdate and t1.pmttype >= t2.pmttype
group by t1.mdate, t1.pmttype, t1.totalpmtamt
order by t1.mdate
但我得到的只是
mdate | paymenttype | totalpmtamt | incrtotal
2016-08-29 | DD | 10 | 10
2016-08-29 | SO | 12 | 22
2016-08-30 | DD | 3 | 13
2016-08-31 | DD | 13 | 26
2016-08-31 | SO | 8 | 34
2016-08-31 | PO | 23 | 69
有人可以帮忙吗?
计算累加和的 ANSI 标准方法是:
select t.*, sum(totalpmtamt) over (order by mdate) as runningsum
from #testdata t
order by t.mdate;
并非所有数据库都支持此功能。
如果您的数据库不支持该功能,我会使用相关子查询:
select t.*,
(select sum(t2.totalpmtamt)
from #testdata t2
where t2.mdate <= t.mdate
) as runningsum
from #testdata
order by t.mdate;
使用以下查询获得所需结果(对于 SQL 服务器)。
with cte_1
as
(SELECT *,ROW_NUMBER() OVER(order by mdate ) RNO
FROM #testdata)
SELECT mdate,pmttype,totalpmtamt,(select sum(c2.totalpmtamt)
from cte_1 c2
where c2.RNO <= c1.RNO
) as incrtotal
FROM cte_1 c1
输出:
听起来像 SQL 服务器。
DECLARE @testdata TABLE
(
mdate DATE ,
pmttype VARCHAR(64) ,
totalpmtamt INT
);
INSERT INTO @testdata
( mdate, pmttype, totalpmtamt )
VALUES ( GETDATE() - 7, 'DD', 10 ),
( GETDATE() - 7, 'SO', 12 ),
( GETDATE() - 6, 'DD', 3 ),
( GETDATE() - 5, 'DD', 13 ),
( GETDATE() - 5, 'SO', 23 ),
( GETDATE() - 5, 'PO', 8 );
SELECT *,
SUM(totalpmtamt) OVER ( ORDER BY mdate ROWS UNBOUNDED PRECEDING )
AS RunningTotal
FROM @testdata t;