Question on PIVOT() function

Question

Hello everyone,
  I have the below dataset and I would like to display it in the format that I've highlighted below:Please suggest.
ELEMENT_NAME
VALUE
PO Number
4500018345
Invoice Number
77777
Invoice Amount
95000
Supplier Name
ABC
PO Line Number
80
Invoice Date
2013-06-10
PO Line Number
70
Invoice Amount
5000
Supplier Name
CDF
Required format
Invoice Number
PO Number
Invoice Amount
Supplier Name
Invoice Date
PO Line Number
77777
4500018345
95000
ABC
2013-06-10
70
77777
4500018345
5000
CDF
2013-06-10
80

Answer 1

Yet another reason to avoid the EAV model.
Anyway, you could try something along these lines:
SQL> -- generating sample data:
SQL> with t as (
  2  select 'PO Number' element_name,  '4500018345' value from dual union
  3  select 'Invoice Number', '77777' from dual union
  4  select 'Invoice Amount', '95000' from dual union 
  5  select 'Supplier Name', 'ABC' from dual union 
  6  select 'PO Line Number', '80' from dual union 
  7  select 'Invoice Date', '2013-06-10' from dual union 
  8  select 'PO Line Number', '70' from dual union 
  9  select 'Invoice Amount', '5000' from dual union 
10  select 'Supplier Name', 'CDF' from dual
11  )
12  --
13  -- actual query:
14  --
15  select nvl(invno, lag(invno) over (order by invno)) "Invoice Number"
16  ,      nvl(pono, lag(pono) over (order by pono)) "PO Number"
17  ,      nvl(invam, lag(invam) over (order by invam)) "Invoice Amount"
18  ,      nvl(supl, lag(supl) over (order by supl)) "Supplier Name"
19  ,      nvl(invdt, lag(invdt) over (order by invdt)) "Invoice Date"
20  ,      nvl(poline, lag(poline) over (order by poline)) "PO Line Number"
21  from ( select min(case when element_name = 'Invoice Number' then value end ) invno
22         ,      min(case when element_name = 'PO Number' then value end ) pono
23         ,      min(case when element_name = 'Invoice Amount' then value end ) invam
24         ,      min(case when element_name = 'Supplier Name' then value end ) supl
25         ,      min(case when element_name = 'Invoice Date' then value end ) invdt
26         ,      min(case when element_name = 'PO Line Number' then value end ) poline
27         from ( select element_name
28                ,      value
29                ,      row_number() over (partition by element_name order by value) rn    
30                from   t
31              )
32         group by rn
33       );
Invoice Nu PO Number  Invoice Am Supplier N Invoice Da PO Line Nu
77777      4500018345 5000       ABC        2013-06-10 70
77777      4500018345 95000      CDF        2013-06-10 80
2 rows selected.