Selecting top N clients by branch or in the whole company

Hi all!
I have a report that selects the top 20 clients of each branch of the company. The company has more than 700 hundred branches. The report was done by:
1) creating a calculation using the rank function, partitioned by rank, ordered by descending total debt.
2) filtering the registers where rank <= 20.
In the report, the branch dimension is a page item.
What I need is that, when I select "ALL" in the page item (branch), the report brings the top 20 clients of the whole company. But, as the rank function calculates the rank for each branch, I have more than 700 clients ranked as 1, as 2, as 3 ,...
Is there a way of doing so, or do I have to create a new sheet just for a rank not partitioned by branch?
Thanks!
William

Hi all, again!
After a lot of consulting, I came across an almost satisfying workaround (without using LOV):
1) Create parameter "Scope" that can assume 2 values: "Branch" or "Country"; checking "Require user to enter value"checkbox.
2) Create calculation "Level of analysis":
case
when (:Scope = "Branch") then Branch.Code
when (:Scope = "Country") then "Brazil"
end
3) Put "Level of analysis" as page item.
4) Modify the rank formula to:
DENSE_RANK() OVER(PARTITION BY *"Level of analysis"* ORDER BY "Total Debt" DESC )
So, if the user wants the report at a branch level, he/she can input "Branch" in the "Scope" parameter. If he/she wants the report at a national level, he/she can input "Country" in the "Scope" parameter.
The only disadvantage is that each time the user wants to change the report from the branch level to the national level (or vice-versa), he/she will have to change the parameter value and rerun the query. In my case, it is very fast...
Thanks for all of those who have spent any time thinking about my situation.
William
Edited by: wlsuzuki on Sep 18, 2008 10:46 AM

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Quote
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STATUS                                                         VARCHAR2(7)
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Selecting top N clients by branch or in the whole company

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