列的累积总和不起作用

Question

我正在尝试对列 due_pis 进行累积总和，使用以下方法：

set @csum := 0;
select SUM(e.vl_taxe) as vl_taxe, 
SUM(CASE WHEN e.hold_pis = 0 THEN e.due_pis ELSE 0 END) as total, 
(@csum := @csum + SUM(CASE WHEN e.hold_pis = 0 THEN e.due_pis ELSE 0 END)) as cumulative_sum
FROM taxes as e 
WHERE e.id_enterprise = 1 
AND (e.dt_taxe BETWEEN '2016-12-01' AND '2017-04-01' ) AND lg_cancel = 0 
GROUP BY e.dt_taxe

结果是：

vl_taxe     total   cumulative_sum

24850.76    1.37     1.37
31444.64    1.26     1.26
32329.27     0        0
33654.82    1.37     1.37
39682.94     0        0

但是，我想得到这个：

vl_taxe     total   cumulative_sum

24850.76    1.37     1.37
31444.64    1.26     2.63
32329.27     0       2.63
33654.82    1.37     4
39682.94     0       4

Answer 1

获取每个日期的总和值，然后指定order by 以获得所需的累积总和。

set @csum := 0;

select dt_taxe,
vl_taxe,
total,
@csum := @csum + total as cumulative_sum
from (select e.dt_taxe,
      SUM(e.vl_taxe) as vl_taxe, 
      SUM(CASE WHEN e.hold_pis = 0 THEN e.due_pis ELSE 0 END) as total
      FROM taxes as e 
      WHERE e.id_enterprise = 1 
      AND (e.dt_taxe BETWEEN '2016-12-01' AND '2017-04-01') 
      AND e.lg_cancel = 0 
      GROUP BY e.dt_taxe
     ) t 
ORDER BY dt_taxe