im trying to pick up the date with the highest version number for each stage
for each ID (there could be infinite versions). i have no idea where to
start!!

ID Stage Version # Date

169646 Feasibility 0 1/02/2005
169646 Conceptual 0 13/03/2005
169646 Definition + Design 0 1/04/2005
169646 Definition + Design 1 3/06/2005
169646 Build + Implement 0 5/07/2005
169646 Build + Implement 1 23/07/2005
169646 Build + Implement 2 12/08/2005
123497 Feasibility 0 1/09/2005
123497 Conceptual 0 25/10/2005
123497 Conceptual 1 4/11/2005

really appreciate your help here, thanks!