Query...Little tricky!

Question

Hi,
I have following columns in my query:
Cust_No     item_name qty
123     Item1 100
123     Item2     200
234     Item1     300
234     Item2     400
Case 1:
Here Item1 and Item 2 are standard. There will be no more Items.
I want the output like below:
Cust_No     item_name qty     Item2_qty
123     Item1 100     200
234     Item2     300     400
Case 2:
Here Item1,Item 2,Item 3....Item n . There will be n number of Items.
I want the output like below:
Cust_No     item_name qty     Item2_qty Item3_qty..........Item n Qty
123     Item1 100     200
234     Item2     300     400
Please send the queries for the both cases.
Thanks you...
Regards,
Suman S
Edited by: SSN on May 21, 2009 11:21 AM

Answer 1

Hi,
When you know exactly how many items there are, and what they are called:
SELECT       cust_no
,       MAX (CASE WHEN item_name = 'Item1' THEN qty END)     AS "Item1"
,       MAX (CASE WHEN item_name = 'Item2' THEN qty END)     AS "Item2"
FROM       table_x
GROUP BY  cust_no;When you don't know this, you have to do dynamic SQL, as Centinul said.
See [this thread|http://forums.oracle.com/forums/thread.jspa?messageID=3340867&#3340867] for an example of how to do it.