Header and Child needed - but underlying records are the same.

Question

Hi people,
I am trying to figure out how to do this particular sort of problem. I have given the create and the insert scripts for creating the sample data for the same.
1. I have 3 records as given below. This is just sample data but based on something that I am trying
create table t
(id number,
sub_id number,
Name varchar2(50),
Desciption varchar2(100),
val number
SQL> insert into t values (1,1,'Test First', 'Test First Description', 10);
1 row created.
SQL> insert into t values (1,1,'Test First', 'Test First Description', 9);
1 row created.
SQL> insert into t values (1,1,'Test First', 'Test First Description', 15);
1 row created.
SQL> select * from t;
        ID     SUB_ID NAME                 DESCIPTION                       VAL
         1          1 Test First           Test First Description            10
         1          1 Test First           Test First Description             9
         1          1 Test First           Test First Description            15
2. I need to create an output, that looks like this
Output
Hdr          Test First           Test First Description
Chd          10
Hdr          Test First           Test First Description
Chd          9
Hdr          Test First           Test First Description
Chd          15Now maybe the logic is very simple, but I have been trying for a couple of hours now and have not been able to put my finger on it.
Would appreciate if any of you could help.
Regards,
K

Answer 1

SQL> drop table test;
Tabel is verwijderd.
SQL> create table test(id number,sub_id number,Name varchar2(50),Desciption varchar2(100),val number
Tabel is aangemaakt.
SQL>
SQL> insert into test values (1,1,'Test First', 'Test 10 First Description', 10);
1 rij is aangemaakt.
SQL>
SQL> insert into test values (1,1,'Test First', 'Test 9 First Description', 9);
1 rij is aangemaakt.
SQL>
SQL> insert into test values (1,1,'Test First', 'Test 15 First Description', 15);
1 rij is aangemaakt.
SQL>
SQL> with x
  2  as
  3  (select name, desciption, val, row_number() over (order by id, sub_id, val) rn
  4    from test
  5  )
  6  select indicator, name, desciption
  7    from (
  8  select 'Hdr' indicator, name, desciption, rn
  9    from x
10  union all
11  select 'Chd', to_char (val), null, rn
12    from x
13    )
14  order by rn, indicator desc
15  ;
IND NAME                                               DESCIPTION
Hdr Test First                                         Test 9 First Description
Chd 9
Hdr Test First                                         Test 10 First Description
Chd 10
Hdr Test First                                         Test 15 First Description
Chd 15
6 rijen zijn geselecteerd.
SQL>