Find the abbreviation and country of the airline that has fewest number of flights?
create table flights (airline varchar, PRIMARY KEY (airline)); create table airlines (abbreviation varchar, country varchar, airline varchar, uid varchar, PRIMARY KEY (abbreviation))
select t1.abbreviation, t1.country from airlines as t1 join flights as t2 on t1.uid = t2.airline group by t1.airline order by count(*) limit 1