Top N and Other

Question

I grouped a report and selected top 10 and other.  Instead of showing the word other for the other category (despite choosing the radio button to do so) it shows the last value in the group.  I think its' because I am grouping on a calculated field:
IF (IsNull({Command.AcctPriKey}) or length(ToText({Command.AcctPriKey}))<1)
then {Command.custname}
else {NAcct_.Nacct}
also
When I group on this, it doesn't actually group on this value, it groups on the combined fields in this formula.  So the result of this field could be Kobe because NAcct_.Nacct = Kobe or because Command.custname = Kobe.  Crystal WILL differentiate and will put them in different groups.  How do I prevent that?
also
iif(IsNull({Command.AcctPriKey}) or length(ToText({Command.AcctPriKey}))<1), {Command.custname}, {NAcct_.Nacct})
Doesn't work.  I don' t know why.
Finally isn't there something like coalesce in crystal.  It's such a handy function, they should really consider supporting it so we don't have any of these issues.

Answer 1

Hi, 
For your first question, Other should show up if you have more than 10 groups generated.  Looking at the Group Tree, how many groups show up? 
What happens if you did a Top5 instead of 10?  Does Other show in the Group Tree? 
For your second question, Crystal will group on unique values regardless if the group is on a field or formula.  I have a sneaking suspicion there is either a leading or trailing space in the name.  Use the Trim function to remove the white spaces like: 
IF (IsNull({Command.AcctPriKey}) or length(ToText({Command.AcctPriKey}))<1)
then Trim ({Command.custname})
else Trim ({NAcct_.Nacct});
For your third question, throw the iif format out.  That was introduced because of dBase years ago and most people I know hate using it.  Go with the traditional.  Easier to read and figure out. 
Good luck,
Brian