Question

我遇到了问题。我只想计算我的桌子的余额。

我的选择陈述是：

select date, ammount, ?? as Balance 
from table 
where accountnr = 123 
order by date

输出应如下所示：

Date             Ammount         Balance 
 
07/02/2016       -145.55         945.65
25/01/2016        349.45         1091.20 
11/11/2015        340.25         741.75
30/09/2015        369.10         401.50        
05/04/2015        32.40          32.40

我试了这么久，用不同的方式没有运气。

Answer 1

您可以使用分析查询在单个表扫描（即没有任何连接或相关子查询）中执行此操作：

SELECT "date",
       amount,
       SUM( amount ) OVER ( ORDER BY "date" ) AS balance
FROM   your_table;

如果表格中有多个帐户：

SELECT account_number,
       "date",
       amount,
       SUM( amount ) OVER ( PARTITION BY account_number ORDER BY "date" ) AS balance
FROM   your_table;

计算余额Oracle

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