GeoNames Forum

"GB" is the main "ISO Alpha 2" for the "United Kingdom of Great Britain", but there is also secondary code "UK". There some other codes which are also reserved by other countries ( http://en.wikipedia.org/wiki/ISO_3166-1_alpha-2#Exceptional_reservations ). For this reason I am wondering whether anybody thinks it would make sense to have extra column in the countryinfo table for such cases. I am thinking: "alt_iso_alpha2".

I think it is not necessary to add a column for this, a remark should be sufficient and more useful.

There are also other countries with multiple iso country codes:
https://spreadsheets.google.com/ccc?key=pJpyPy-J5JSNhe7F_KxwiCA&hl=en

Marc