CREATE TABLE climber (climber_id DECIMAL, name TEXT, country TEXT, time TEXT, points DECIMAL, mountain_id DECIMAL)
CREATE TABLE mountain (mountain_id DECIMAL, name TEXT, height DECIMAL, prominence DECIMAL, range TEXT, country TEXT)

Show the range that has the most number of mountains.
SELECT range FROM mountain GROUP BY range ORDER BY COUNT(*) DESC LIMIT 1
SELECT "range" FROM "mountain" GROUP BY "range" ORDER BY COUNT(*) DESC NULLS LAST LIMIT 1