How to transpose rows to multiple dynamic number of columns

Question

Hi All,
I have a requirement to transpose the rows in single column to multiple columns. The columns are not fixed.
A table called XX_PRODUCT_SIZE.
The data in the table are,
PRODUCT_NO SIZE PRESSURE
P1 1 100
P1 1 200
P1 2 100
P1 2 300
P1 3 300
The data in the table are not fixed with respect to size and pressure. In future the product P1 may have size 4 with new pressure 900.
Now I want to convert these rows into multiple columns.
So it should be,
PRODUCT_NO SIZE_1 SIZE_2 SIZE_3 PRESSURE_100 PRESSURE_200 PRESSURE_300
P1 TRUE TRUE TRUE
P1 TRUE TRUE TRUE
P1 TRUE TRUE
I tried many ways of writing using CASE, MAX with rownumber over partition by etc. but which will not work for me as the rows are not fixed to compare.
Can you please help me writing a query which transpose rows to columns dynamically. My intention is to create a materialized view for this XX_PRODUCT_SIZE table with transposing columns.
I am using 10g DB
Thank You
Manju
Edited by: ManjuNaik88 on May 28, 2013 2:29 AM

Answer 1

Hi,
If the number of columns in a query has to be figured out at run-time, then you need dynamic SQL. See the froum FAQ {message:id=9360005} for links to examples.
You might find it easier to create one big column that looks like a variable number of columns. SELECT ... PIVOT can do this with XML output. String aggregation is another way; see {message:id=3527823} .
ManjuNaik88 wrote:
... I saw Oracle 11g Pivot can be used. "PIVOT" is still not working
SELECT ... PIVOT works. If it's not doing what you the way you're uisng it, then just change how you're using it.
(You don't expect a mor precise answer with just that information, do you?)