CREATE TABLE debate (debate_id DECIMAL, date TEXT, venue TEXT, num_of_audience DECIMAL)
CREATE TABLE people (people_id DECIMAL, district TEXT, name TEXT, party TEXT, age DECIMAL)
CREATE TABLE debate_people (debate_id DECIMAL, affirmative DECIMAL, negative DECIMAL, if_affirmative_win others)

Show the party that has the most people.
SELECT party FROM people GROUP BY party ORDER BY COUNT(*) DESC LIMIT 1
SELECT "party" FROM "people" GROUP BY "party" ORDER BY COUNT(*) DESC NULLS LAST LIMIT 1