Bank Transaction

Question

Hi All,
I want to show 2 records from one record.
eg.
in a bank ,one is a CR(credit) and the same record is DR (debit ) for someone.
hence
select
col1,
'CR',
col3
from tableA
where clause
union all
select
col1,
'DR',
col3
from tableA
where clause remains same
I do not want to use the above query as the query runs twice for the same information except 'CR' and 'DR' which are hard coded .
Also the where clause remains SAME in both the above queries.
Please suggest.
ta
sunny

Answer 1

Hence ,the where clause of my query for both the records remain same but only a CR or DR is displayed.I don't think this is right. Or, may be you can explain it better. I think this will only applicable when one customer make a transaction with the bank. So, this won't be for all the customer of the bank.
But, it will be better - if you explain it.
But, you can check the following solution - if it satisfy your requirement.
satyaki>
satyaki>select * from v$version;
BANNER
Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - Prod
PL/SQL Release 10.2.0.3.0 - Production
CORE    10.2.0.3.0      Production
TNS for 32-bit Windows: Version 10.2.0.3.0 - Production
NLSRTL Version 10.2.0.3.0 - Production
Elapsed: 00:00:04.75
satyaki>
satyaki>
satyaki>--Data Table---
satyaki>with bank_tran
  2  as
  3    (
  4      select 'ABC' cust_nm, 5000 Amt from dual
  5      union all
  6      select 'UVC', 6000 from dual
  7    ),
  8  --End Of Data Table--
  9  --tran_type table you need--
10  tran_type
11  as
12    (
13      select 'CR' ty_pe from dual
14      union all
15      select 'DB' from dual
16    )
17  select bt.cust_nm,
18         bt.Amt,
19         tt.ty_pe
20  from bank_tran bt,
21       tran_type tt;
CUS        AMT TY
ABC       5000 CR
ABC       5000 DB
UVC       6000 CR
UVC       6000 DB
Elapsed: 00:00:00.48
satyaki>
satyaki>Regards.
Satyaki De.