Question

表格如下：

| Date       | Amount   |
|-----------------------|
| 2014-02-02 | -500     | 
| 2014-03-05 |  15      | 
| 2014-03-25 |  20      |
| 2014-04-14 |  12      |
| 2014-04-30 | -200     |

是否存在可以产生如下输出的查询：


| Date       | Amount   |  Balance  |
|-----------------------------------|
| 2014-02-02 | -500     |   -500    |
| 2014-03-05 |  15      |   -485    |
| 2014-03-25 |  20      |   -465    |
| 2014-04-14 |  12      |   -453    |
| 2014-04-30 | -200     |   -653    |

我需要获得每笔交易的余额。请帮帮我们。谢谢

Answer 1

这应该可以解决问题：

 select main.Date,main.Amount,grp.balance
from @T1 main inner join (

SELECT x.Date          
     , SUM(y.Amount) balance 
  FROM
     ( 
       SELECT * FROM @T1
     ) x
  JOIN
     ( 
       SELECT * FROM @T1
     ) y
    ON y.Date <= x.Date
 GROUP 
    BY x.Date
    ) grp
    on grp.Date = main.Date

Mysql小计逐行

1 个答案: