我有一个名为“Stock”的表，如下所示。
+-----------+--------------+---------------+---------+
| client_id | date | credit | debit|
+-----------+--------------+---------------+---------+
| 1 | 01-01-2015 | 50 | 0 |
| 2 | 01-01-2015 | 250 | 0 |
| 2 | 01-01-2015 | 500 | 0 |
| 2 | 02-01-2015 | 0 | 500 |
| 1 | 02-01-2015 | 0 | 40 |
| 1 | 02-01-2015 | 0 | 80 |
| 3 | 05-01-2015 | 3000 | 0 |
| 2 | 06-01-2015 | 0 | 350 |
| 4 | 06-01-2015 | 0 | 1000 |
| 4 | 06-01-2015 | 0 | 2000 |
| 4 | 07-01-2015 | 500 | 0 |
| 5 | 07-01-2015 | 500 | 0 |
| 5 | 08-01-2015 | 500 | 0 |
| 1 | 09-01-2015 | 0 | 100 |
+-----------+--------------+---------------+---------+
我期待的结果是这样的:
+---------+-----------+-------------+--------+---------+----------+
|client_id| date |Open_Balance | credit | debit | balance |
+---------+-----------+-------------+--------+---------+----------+
| 1 |01-01-2015 | 0 | 50 | 0 | 50 |
| 1 |02-01-2015 | 50 | 0 | 40 | 10 |
| 1 |02-01-2015 | 10 | 0 | 80 | -70 |
| 1 |09-01-2015 | -70 | 0 | 100 | -170 |
| 2 |01-01-2015 | 0 | 250 | 0 | 250 |
| 2 |01-01-2015 | 250 | 500 | 0 | 750 |
| 2 |02-01-2015 | 750 | 0 | 500 | 250 |
| 2 |06-01-2015 | 250 | 0 | 350 | -100 |
| 3 |05-01-2015 | 0 | 3000 | 0 | 3000 |
| 4 |06-01-2015 | 0 | 0 | 1000 | -1000 |
| 4 |06-01-2015 | -1000 | 0 | 2000 | -3000 |
| 4 |07-01-2015 | -3000 | 500 | 0 | -2500 |
| 5 |07-01-2015 | 0 | 500 | 0 | 500 |
| 5 |08-01-2015 | 500 | 500 | 0 | 1000 |
+---------+-----------+-------------+--------+---------+---- -----+
我需要按 client_id 和日期顺序计算余额和未结余额，如上所示。请帮忙。
最佳答案
尝试运算符
喜欢
SELECT client_id,date,credit,debit,(credit-debit) as balance FROM Stock;
谢谢。
关于mysql - 复杂的 MySQL 贷方借方余额，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/28737952/