CREATE TABLE device (device_id NUMBER, device CLOB, carrier CLOB, package_version CLOB, applications CLOB, software_platform CLOB)
CREATE TABLE shop (shop_id NUMBER, shop_name CLOB, location CLOB, open_date CLOB, open_year NUMBER)
CREATE TABLE stock (shop_id NUMBER, device_id NUMBER, quantity NUMBER)

List the software platform shared by the greatest number of devices.
SELECT software_platform FROM device GROUP BY software_platform ORDER BY COUNT(*) DESC LIMIT 1
SELECT "software_platform" FROM "device" GROUP BY "software_platform" ORDER BY COUNT(*) DESC FETCH FIRST 1 ROWS ONLY