Display top 10 highest values

Hi All,
Please help me on how to achieve this.
I have a report and a db prompt in my dashboard. Based on the prompt selected and given the GO button, the report gets filtered accordingly.
Now what i want is , I wanted to filter only the Top 10 values of a particular column in my report when the prompt is given go button.
For ex, say there is a report with Name, EMp No, Hours Booked and a prompt with dept column.
When a particular dept is selected from the prompt and given go, the report should display only top highest 10 values of the Hours Booked corresponding to that particular dept and not display everything.
How can i achieve this?
Regards
Gowrish

Hi,
Use the TOPN or rank functions.
TOPN (n_expression, n)
n_expression is any expression that evaluates to a numerical value.
The N of TopN which is any positive integer. It Represents the top number of rankings displayed in the result set, 1 being the highest rank.
ex:- GO-->your column and click fx--->use this function -- TOPN("Hours Booked", 10)
ex:-2
Top10 for each year--- fx---> topn(<<col>>,10,by<<col>>)<=10
Second method.----
Using rank function:
case when RANK("F1 Revenue"."1-01 Revenue (Sum All)") <= 10 then RANK("F1 Revenue"."1-01 Revenue (Sum All)"end
http://total-bi.com/2010/10/obiee-topn-versus-the-rest/
Award points it is useful.
Thanks,
satya
Edited by: satya R on Apr 27, 2012 7:48 PM
Edited by: satya R on Apr 27, 2012 9:35 PM

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