Aggregation in IR works incorrectly when breaks on computed cols are used

Question

I have a problem with aggregation in IR when breaks on computed cols are used.
Please see exact steps to reproduce the problem in my next post bellow
Martin
Edited by: Martin Krepelka on Oct 22, 2008 11:18 AM

Answer 1

Hi Joel,
here are exact steps to reproduce the problem:
1. Suppose you have "General Ledger" table with 500,000 rows.
2. Create page with IR for this one.
3. Run page and set filter to display data for only one specific account. Suppose you've got now 500 rows on screen.
4. Create new computation "Posting month" from "Posting date" column. The "Posting Month" shows "Posting Date" column in RRRR/MM format.
5. Hide "Posting Date" column
6. Make break on "Posting Month" column.
7. Create new aggregation on "Ammount" column. For example create an count for this column.
As a result you can now see 500 rows divided to separate groups by "Posting Month". Each group contains number of rows. But the count aggregation show only 1 in each goup. Similar problem rise when you use other aggregation functions (sum, min, max ...)
When I change report to break data for NON computed column everything goes OK.
I also examined that the problem does'nt depend on number of rows in the table as I supposed in my previous post.
You can examine the problem in my test application here:
http://apex.oracle.com/pls/otn/f?p=47777:1
All necessary IR settings to reproduce the problem are saved as default report settings. So if necessary, please do report reset first.
Edited by: Martin Krepelka on Oct 22, 2008 1:11 PM