需要计算借方的余额

Question

我正在为1个帐户项目工作，但我停留在1个地方。

表借记

ID      Debit       Credit      A       B       C   
1       1000.00     900.00      0       0       1000.00     
2       450.00      425.00      0       450.00  0   
3       500.00      490.00      500.00  0       0   
4       600.00      599.00      600.00  0       0   
5       748.00      700.00      0       748.00  0   


Now if we sum the credit it will be = 3114,  
What I have to do here is whatever total credit I have it has to start from top (A+B+C) - 3114  
So It will make C = 0 and my new credit will be 3114-1000=2114,   
Then in my id=2 it will do the same thing (A+B+C) - 2114  
so now B will be 0 and my new credit will be 2114-450=1664

我的最终输出在所有计算之后应该是

ID      Debit       Credit      A       B       C   
1       1000.00     900.00      0       0       0.00        
2       450.00      425.00      0       0.00    0   
3       500.00      490.00      0.00    0       0   
4       600.00      599.00      0.00    0       0   
5       748.00      700.00      0       184.00  0   

如果我们尝试（总和A +总和B +总和C）-贷方，数字将相同，但将出现在A列中。因此，在进行所有头脑风暴之后，我认为必须应用上述计算。

有谁知道如何实现这一目标。

任何帮助，将不胜感激。

Answer 1

SQL Server仅支持MSSQL 2012版本中的分析函数SUM() OVER ，因此对于2008年，这可能是查询结果的一种方法：

WITH table_name AS
( 
    SELECT 1 ID, 000.00 Debit, 900.00 Credit, 0       a, 0       b, 1000.00     c UNION ALL
    SELECT 2 ID, 450.00 Debit, 425.00 Credit, 0       a, 450.00  b, 0   c UNION ALL
    SELECT 3 ID, 500.00 Debit, 490.00 Credit, 500.00  a, 0       b, 0   c UNION ALL
    SELECT 4 ID, 600.00 Debit, 599.00 Credit, 600.00  a, 0       b, 0   c UNION ALL
    SELECT 5 ID, 748.00 Debit, 700.00 Credit, 0       a, 748.00  b, 0   c 
)
, 
sum_credit AS
(
    SELECT SUM(credit) sumcredit 
    FROM table_name
)
SELECT t.id, t.debit, t.credit, 
    CASE WHEN a = 0
            OR ( (SELECT COALESCE(SUM(a + b + c), 0) FROM table_name WHERE id < t.id)
                + a - sc.sumcredit < 0
            )
        THEN 0 
        ELSE (SELECT COALESCE(SUM(a + b + c), 0) FROM table_name WHERE id < t.id)
            + a - sc.sumcredit 
        END a,
    CASE WHEN b = 0
            OR ( (SELECT COALESCE(SUM(a + b + c), 0) FROM table_name WHERE id < t.id)
                + a + b - sc.sumcredit < 0
            )
        THEN 0 
        ELSE (SELECT COALESCE(SUM(a + b + c), 0) FROM table_name WHERE id < t.id)
            + a + b - sc.sumcredit 
        END b,
    CASE WHEN c = 0 
            OR ( (SELECT COALESCE(SUM(a + b + c), 0) FROM table_name WHERE id < t.id)
                + a + b + c - sc.sumcredit < 0
            )
        THEN 0 
        ELSE (SELECT COALESCE(SUM(a + b + c), 0) FROM table_name WHERE id < t.id)
            + a + b + c - sc.sumcredit 
        END c
FROM 
    table_name t
CROSS JOIN 
    sum_credit sc;