SQL string aggregation

Question

Hai all
I am using the below Collection fucntion for string aggregation.
Its giving values in correct way but giving duplicates too based on my data.. How can I eliminate duplicates?
For example:
Instead of this
10 CLARK,KING,MILLER
It gives me
10 CLARK,KING,MILLER, CLARK,KING,MILLER
[http://www.oracle-base.com/articles/misc/StringAggregationTechniques.php#collect]
Thanks

Answer 1

user4552416 wrote:
I am using 10G.
Data is like this
A1 B1 C1
A1 B2 C2
A1 B1 C3
A2 B3 C4
I should get data like this
A1 B1,B2 C1,C2,C3
A2 B3 C4
But I am getting something like this
A1 B1,B2,B1,B2 C1,C2,C3,C1,C2,C3
A2 B3 C4
ThanksSomething like this then...
SQL> ed
Wrote file afiedt.buf
  1  with t as (select 'A1' as a, 'B1' as b, 'C1' as c from dual union all
  2             select 'A1', 'B2', 'C2' from dual union all
  3             select 'A1', 'B1', 'C3' from dual union all
  4             select 'A2', 'B3', 'C4' from dual)
  5  --
  6  -- END OF TEST DATA
  7  --
  8  select a
  9        ,trim(',' from sys_connect_by_path(b,',')) as b
10        ,trim(',' from sys_connect_by_path(c,',')) as c
11  from (select a,b,c,row_number() over (partition by a order by b,c) as rn
12        from (
13              select distinct a, b, null as c from t union
14              select distinct a, null, c from t
15             )
16       )
17  where connect_by_isleaf = 1
18  connect by a = prior a and rn = prior rn + 1
19* start with rn = 1
SQL> /
A  B          C
A1 B1,B2      C1,C2,C3
A2 B3         C4
SQL>