Customer running ledger balance

Question

i book invoices for customers in the table;
create table tinv
(ccode varchar(3),
ctxnno number,
cdate date,
cei varchar2(1),
camt number,
cmemo varchar2(200));
insert into tinv values ('101',1,to_date('15/01/2009','dd/mm/yyyy'),'E',150,null);
insert into tinv values ('101',2,to_date('25/01/2009','dd/mm/yyyy'),'E',50,null);
insert into tinv values ('101',3,to_date('02/02/2009','dd/mm/yyyy'),'E',100,null);
insert into tinv values ('101',4,to_date('10/02/2009','dd/mm/yyyy'),'E',250,null);
insert into tinv values ('101',5,to_date('18/03/2009','dd/mm/yyyy'),'E',150,null);
insert into tinv values ('101',6,to_date('05/04/2009','dd/mm/yyyy'),'E',200,null);
insert into tinv values ('101',7,to_date('25/04/2009','dd/mm/yyyy'),'E',300,null);
insert into tinv values ('101',8,to_date('15/05/2009','dd/mm/yyyy'),'E',100,null);
i receive payment from customers in the table;
create table tpay
(pccode varchar(3),
ptxnno number,
pdate date,
pei varchar2(1),
pamt number,
pmemo varchar2(200));
insert into tpay values ('101',1,to_date('01/01/2009','dd/mm/yyyy'),'I',200,null);
insert into tpay values ('101',2,to_date('30/01/2009','dd/mm/yyyy'),'I',100,null);
insert into tpay values ('101',3,to_date('05/02/2009','dd/mm/yyyy'),'E',50,null);
insert into tpay values ('101',4,to_date('25/02/2009','dd/mm/yyyy'),'I',150,null);
insert into tpay values ('101',5,to_date('15/04/2009','dd/mm/yyyy'),'I',150,null);
ccode = pccode, is the common field that links both the tables.
i want the output result to come as like this;
Date                  Tno     Memo         Debit     Credit     Balance Amount
30/01/2009                Opening Balance 200     200          0
30/01/2009           2                      100          -100
2/2/2009            3                  100               0
5/2/2009             3                  50                  50for the in-between report period
var M_FRM_DATE varchar2(10);
var M_UPTO_DATE varchar2(10);
exec :M_FRM_DATE :=TO_DATE ('30/01/2009','dd/mm/yyyy');
exec :M_UPTO_DATE:= TO_DATE ('05/02/2009','dd/mm/yyyy');
the query should go back records prior to 'm_frm_date' in both the tables by
summing up the total "Debits and Credits" for customer '101' and displays the result on
the first row of the report as;
30/01/2009          Opening Balance     200     200     0
and then, the actual records falling between 'm_frm_date' & 'm_upto_date'
should be shown with a running cumulative balance as the last "Balance Amount" column
any help is greatly appreciated.
TY.
Edited by: user649208 on Jan 24, 2010 12:20 AM

Answer 1

Ledger are best handled at report level.
Else it can get difficult in the format it is expected at front end.
There might be a better way of doing this.But on a week end this is what i came up with.
thanks for posting create and insert
WITH DATA AS (
SELECT ccode,cdate,cei,camt,ctxnno FROM tinv
UNION
SELECT pccode,pdate,pei,pamt,ptxnno FROM tpay
SELECT cdate,txno,SUM(op_cre) credit,SUM(op_deb) debit
FROM (
SELECT CASE WHEN cdate < to_date('30 jan 2009','dd mon yyyy') THEN
to_date('30 jan 2009','dd mon yyyy')
ELSE cdate
END cdate,
CASE WHEN cdate < to_date('30 jan 2009','dd mon yyyy') THEN
NULL
ELSE ctxnno
END txno,
CASE WHEN cdate  < to_date('30 jan 2009','dd mon yyyy') AND cei='I' THEN
camt
WHEN cdate  >= to_date('30 jan 2009','dd mon yyyy') AND cei='I' THEN
camt
END op_cre,
CASE WHEN cdate  < to_date('30 jan 2009','dd mon yyyy') AND cei='E' THEN
camt
WHEN cdate >= to_date('30 jan 2009','dd mon yyyy') AND cei='E' THEN
camt
END op_deb,
decode(cei,'I',camt,-camt) bal
FROM DATA)
GROUP BY cdate,txno
ORDER BY cdate,txno NULLS FIRSTCheers!!!
Bhushan