SELECT country FROM competition WHERE competition_type  =  'Friendly' INTERSECT SELECT country FROM competition WHERE competition_type  =  'Tournament'
which countries did participated in both Friendly and Tournament type competitions.
SELECT country FROM competition WHERE competition_type = 'Friendly ' INTERSECT SELECT country FROM competition WHERE competition_type = 'Tournament '
select country from competition where competition_type = value intersect select country from competition where competition_type = value
which countries did participated in both Friendly and Tournament type competitions .