How to get variable after count?

[#1]

How do I replace the number after counting with the name of the Airline?

[sunny_talwar]

Replace the number? Not sure what you mean

[JonnyPoole]

Something like this:

It shows the country who ranks first in sum(Sales)

concat( distinct if( aggr(rank( total sum(Sales)) , countries_world.Name )=1, countries_world.Name))

[JonnyPoole]

or this...

concat( distinct {<countries_world.Name={"=aggr(rank( total sum(Sales)), countries_world.Name )=1"}>}  countries_world.Name)