Need help converting multipe rows in a single row

Question

I want to convert multiple rows into a single row. Oracle version is 10.2
SQL> with abc
  2  as
  3  (select 1 a, 2 b, 3 c from dual union
  4  select 4, 5, 6 from dual)
  5  select * from abc;
         A          B          C
         1          2          3
         4          5          6I want the output as
A      B       C
1,4   2,5    3,6Thanks,
Gangadhar
Edited by: GR on Feb 6, 2012 9:35 PM

Answer 1

GR wrote:
I want to convert multiple rows into a single row. Oracle version is 10.2
SQL> with abc
2  as
3  (select 1 a, 2 b, 3 c from dual union
4  select 4, 5, 6 from dual)
5  select * from abc;
A          B          C
1          2          3
4          5          6I want the output as
A      B       C
1,4   2,5    3,6
You haven't specified if there's a particular order to the data, so I've assumed one...
SQL> ed
Wrote file afiedt.buf
  1  with t as (select 1 a, 2 b, 3 c from dual union
  2             select 4, 5, 6 from dual)
  3  --
  4  -- end of test data
  5  --
  6  select trim(',' from sys_connect_by_path(a,',')) as a
  7        ,trim(',' from sys_connect_by_path(b,',')) as b
  8        ,trim(',' from sys_connect_by_path(c,',')) as c
  9  from (select a,b,c,row_number() over (order by a) as rn from t)
10  where connect_by_isleaf = 1
11  connect by rn = prior rn+1
12* start with rn = 1
SQL> /
A          B          C
1,4        2,5        3,6
SQL>