Hello , thanks all for your reply ,
The problem is that I have a lot of data since there is no filter in my list :/ , so using rank() on one column forces cognos to do more calculation , Cognos have to attribute a rank to all my data and sort by desc ,...
The problem is that I have a lot of data since there is no filter in my list :/ , so using rank() on one column forces cognos to do more calculation , Cognos have to attribute a rank to all my data and sort by desc ,...