如何制定借记和贷记公式

Question

我想将所有借记和借方金额中的贷方相加。 比如从前两行汇总借记金额并从第3,4行减去信用额度并显示在ttl blnc列中，但是下面的结果不正确它只是从借方扣除贷方

我需要这个结果

debit   Credit  Running Total
144       0       144
264       0       408
0        264      144
0        441     -297
2464      0       2167
144       0       2311
0      27306      -24995
264       0       -24731

这是我的代码

  result number:=0;
begin
  result:= result +  debit - credit;
  return result;

Answer 1

使用此formulla

RETURN(NVL(:CF_ttl_blnc,0)+NVL(:debit,0)-NVL(:credit,0));

Answer 2

假设您希望逐行查看运行总计，我会使用SUM（）分析功能。

SELECT 
 xti.dr_amount
,xti.cr_amount   
,SUM(dr_amount-cr_amount) OVER (ORDER BY xti.invoice_num)  running_total
FROM
 xxcjp_test_invoices       xti
ORDER BY
 xti.invoice_num
;

使用以下命令创建测试数据

CREATE TABLE XXCJP_TEST_INVOICES
(invoice_num    VARCHAR2(10)
,dr_amount      NUMBER
,cr_amount      NUMBER
)
;

INSERT INTO XXCJP_TEST_INVOICES VALUES ('A001',144,0) ;
INSERT INTO XXCJP_TEST_INVOICES VALUES ('A002',264,0) ;
INSERT INTO XXCJP_TEST_INVOICES VALUES ('A003',0,264) ;
INSERT INTO XXCJP_TEST_INVOICES VALUES ('A004',0,441) ;
INSERT INTO XXCJP_TEST_INVOICES VALUES ('A005',2464,0) ;
INSERT INTO XXCJP_TEST_INVOICES VALUES ('A006',144,0) ;
INSERT INTO XXCJP_TEST_INVOICES VALUES ('A007',0,27306) ;
INSERT INTO XXCJP_TEST_INVOICES VALUES ('A008',264,0) ;
INSERT INTO XXCJP_TEST_INVOICES VALUES ('A009',55500,0) ;