dispaly a character(sayY) whencondition is met else display another(sayN)

Hi,

My query has to meet a certain requirement, where if a Condition is met the Keyfigure Column in the report should display a specific character else, if it doesn't meet the condition it should display another character.

Please note that i donot wish for colour identification using Exceptions but require a seperate column with the characters(Y/N).