CREATE TABLE university (school_id NUMBER, school CLOB, location CLOB, founded NUMBER, affiliation CLOB, enrollment NUMBER, nickname CLOB, primary_conference CLOB)
CREATE TABLE basketball_match (team_id NUMBER, school_id NUMBER, team_name CLOB, acc_regular_season CLOB, acc_percent CLOB, acc_home CLOB, acc_road CLOB, all_games CLOB, all_games_percent NUMBER, all_home CLOB, all_road CLOB, all_neutral CLOB)

Find the total student enrollment for different affiliation type schools.
SELECT SUM(enrollment), affiliation FROM university GROUP BY affiliation
SELECT SUM("enrollment"), "affiliation" FROM "university" GROUP BY "affiliation"