Oracle pivot with dynamic data - oracle

Question

I am new to the oracle database and I am trying to use PIVOT to convert rows into columns. I have following tables..
table 1
solid solname
--------------
1 xxxxxx
2 yyyyyyy
table2
id name abbrv
----------------------------------
1 test db tdb
2 Prdocuiton db pdb
table3
id solId
-------------
1 1
1 2
1 3
1 4
1 5
1 7
1 8
1 9
1 22
1 23
1 24
1 25
2 26
2 27
1 28
1 29
1 32
1 33
1 34
1 35
1 36
1 37
3 38
1 39
1 40
1 43
1 44
table 3 is mapper table for table 1 and table 3.
I need to create a view with the columns in table2 and extra column for each solname's. So the view looks like
id name abbrv xxxxxxx yyyyyyy
--------------------------------------------------
So is there a way to do this using PIVOT in oracle database?

Answer 1

For Dynamic SQL Pivoting you need to do something similar :
create or replace view sol_view
as
select
t1.solname,
t2.name,
count(t3.abbrv),
from
table1 t1,
table2 t2,
table3 t3
where
t1.solid = t3.solid
and t2.id = t3.id
group by
t1.solname,
t3.name
select * from table( pivot('select * from sol_view') )
Caveat: I have never tried this but understood the logic from here:
http://technology.amis.nl/2006/05/24/dynamic-sql-pivoting-stealing-antons-thunder/
For Static SQL Pivoting, try something roughly along these lines. Never tried or tested though:
with pivot_data as (
select t1.solname, t2.name, t3.abbrv
from table1 t1, table2 t2, table3 t3
where t1.solid = t3.solid
and t2.id = t3.id
)
select *
from pivot_data
pivot (
count(abbrv)
for solname
in ('xxxxxx','yyyyyyy')
);

Answer 2

It was not really defined what you want to store in the xxxx and yyyy columns, maybe 1/blank, Y/N, ... ? However, your query might look close to something like this:
SELECT * FROM (
SELECT *
FROM table3 t3
JOIN table2 t2 USING (id)
JOIN table1 t1 USING (solid)
) PIVOT (
COUNT(*) FOR (solname) IN (
('xxx') AS "XXX",
('yyy') AS "YYY"
)
)
You can find more information and additional references on My Blog

Answer 3

TableName - **tblItem**
Id ItemName RecipeName Quantity
1 Sugar mutter paneer 200
2 Tea mutter paneer 100
3 Tomato mutter paneer 500
4 Onion mutter paneer 300
5 Ginger mutter paneer 300
6 Capsicum mutter paneer 300
7 Sugar mutter paneer 200
8 Tea mutter paneer 100
9 Onion mutter paneer 500
10 Sugar mutter paneer 200
V_VALUES varchar2(4000);
sql_query varchar2(4000);
SELECT
LISTAGG(''''||ITEMNAME||'''',',')WITHIN GROUP (ORDER BY ITEMNAME)as ITEMNAME
INTO V_LIST
FROM(SELECT DISTINCT ITEMNAME FROM tblItem);
sql_query : = 'SELECT * FROM (
SELECT ItemName,RecipeName,Sum(Quantity) as Quantity from tblItem group by ItemName,RecipeName)
PIVOT (
sum(Quantity) for ItemName in (' ||V_LIST|| ')
)';
OPEN p_cursor
FOR sql_query;