CREATE TABLE country (country_id NUMBER, name CLOB, population NUMBER, area NUMBER, languages CLOB)
CREATE TABLE roller_coaster (roller_coaster_id NUMBER, name CLOB, park CLOB, country_id NUMBER, length NUMBER, height NUMBER, speed CLOB, opened CLOB, status CLOB)

Please show the most common status of roller coasters.
SELECT status FROM roller_coaster GROUP BY status ORDER BY COUNT(*) DESC LIMIT 1
SELECT "status" FROM "roller_coaster" GROUP BY "status" ORDER BY COUNT(*) DESC FETCH FIRST 1 ROWS ONLY