Multiple row values of a column (variable) into a single record

Question

Hi,
I have the follwing table structure - ITEM_MASTER
Item Item_Parent Item_Type
------- ---------------------- -----------1000 ITEM
998272 1000 EAN
998873 1000 EAN
998874 1000 EAN
I need it as follows:
Item EAN1 EAN2 EAN3
1000 998272 998873 998874
The query I am trying to use outer join as follows but without success:
select im.item, im_ean1.item,
from ITEM_MASTER im
LEFT OUTER JOIN on ITEM_MASTER im_ean1
on (im.item = im_ean1.item_parent and im_ean1 = 'EAN' )
I am not getting the 3 EANs in a single row.
I am getting them in multiple rows.
Please suggest how should I proceed.
Thanks in advance
Suddha Satta Ray

Answer 1

RANK may give you multiple time same occurrence, that's why I used ROW_NUMBER, see example below :
SQL> ed
Wrote file afiedt.buf
  1  select sal,
  2         rank() over (order by sal) rk,
  3         dense_rank() over (order by sal) drf,
  4         row_number() over (order by sal) rn
  5* from emp
SQL> /
       SAL         RK        DRF         RN
       800          1          1          1
       950          2          2          2
      1100          3          3          3
      1250          4 4          4
      1250          4 4          5
      1300          6          5          6
      1500          7          6          7
      1600          8          7          8
      2450          9          8          9
      2850         10          9         10
      2975         11         10         11
      3000         12 11         12
      3000         12 11         13
      5000         14         12         14
14 rows selected.
Elapsed: 00:00:00.00
SQL> Maybe it's your problem.
Nicolas.