Write a Query For this

Question

Hi friend,
I have a requirement...for complete this i want to your help... I create sample table and sample data here.
My table is like this :
create table test1
( docid number(10),
doctyp varchar2(10),
billno varchar2(10),
prnno varchar2(10),
amount number(10)
My data is :
insert into test1 values ( D0001, 'BNP05', '101', 'PRN01', 1000);
insert into test1 values ( D0001, 'BNP05', '101', 'PRN02', 1000);
insert into test1 values ( D0001, 'BNP05', '101', 'PRN03', 1000);
insert into test1 values ( D0002, 'BNP05', '102', 'PR01', 100);
My expected o/p :
DOCID DOCTYP BILLNO PRNNO AMOUNT
================================================
D0001 BNP05 101 PRN01 1000
D0001 BNP05 101 PRN02 0
D0001 BNP05 101 PRN03 0
D0002 BNP05 101 PR01 100
If u see it, i dont want to show amount repeatly.... for DOCID, DOCTYP, BILLNO Combination..
How to achieve this ... ??
Thanks in advance

Answer 1

Hi,
Do you want something like this:
SQL> select  DOCID, DOCTYP, BILLNO, prnno,
  2          case
  3            when row_number() over(partition
  4                  by
  5                  docid,doctyp,billno
  6                 order by prnno) = 1
  7                 then amount
  8            else null
  9           end   as amount
10  from test1
11  order by docid,doctyp,billno;
     DOCID DOCTYP     BILLNO     PRNNO          AMOUNT
         1 BNP05      101        PRN01            1000
         1 BNP05      101        PRN02
         1 BNP05      101        PRN03
         2 BNP05      102        PR01              100
SQL>