How can I convert Row to Table Column in Oracle SQL Output?

Question

I want to convert my oracle sql output to table data row to Column.

My SQL output like

ITEM    | RESULT
-----------------
Shell   | 296.5
-----------------
Shell   | 299.8
-----------------
Shell   | 311
-----------------
Shell   | 289
-----------------
Lining  | 301.33
-----------------
Lining  | 296.5
-----------------
Lining  | 299
-----------------

But I want the output like -

Shell    |   Lining
----------------------
296.5    |  301.33
----------------------
299.8    |  296.5
----------------------
311      |  299
----------------------
289      |  0 -- 

If any item have less result then will be fillup with Zero(0)

So please suggest me the sql code that will fulfill my requirment. Thanks

Answer 1

PIVOT is the right thing that you are looking for. take a look here: https://www.techonthenet.com/oracle/pivot.php

Answer 2

you can use conditional aggregation

select max(case when ITEM='Shell' then RESULT end) as shell,
max(case when ITEM='Lining' then RESULT end) as Lining
from 
  ( select *,row_number() over(partition by item order by result) rn from 
    tablename
  )A
group by rn

Answer 3

You need to do pivot, as provided below. But, you need aggregate function for the pivot. You need to select one more column from the table, for grouping.

SELECT * FROM 
(SELECT Item, Result
FROM Table1) 
PIVOT
(
  SUM(Result) FOR ITEM IN ('SHELL' Shell,'LINING' Lining) 
)

Answer 4

You can do Pivot using row number so that you don't lose any value in your grouping while using max.

with cte as (
select 'Shell' as Item,   '296.5'  as Resultn from dual  union all 
select 'Shell' as Item,   '299.8'  as Resultn from dual  union all 
select 'Shell' as Item,   '311'    as Resultn from dual  union all 
select 'Shell' as Item,   '289'    as Resultn from dual  union all 
select 'Lining' as Item,  '301.33' as Resultn from dual  union all 
select 'Lining' as Item,  '296.5'  as Resultn from dual  union all 
select 'Lining' as Item,  '299'    as Resultn from dual   )

select nvl(Shell,0) Shell, nvl(Lining,0) Lining from (
select  c.item, c.Resultn, row_number() over (partition by Item order by Resultn) rownumn   
from cte c 
) z 
pivot 
(
max(Resultn) 
for item in ('Shell' as Shell  ,'Lining' as Lining ));

Output:

SHELL   LINING
289     296.5
296.5   299
311      0
299.8   301.33