INSERT INTO t_aircraft (aircraft_type, aircraft_descripte, ending_time, input_time, file_path) SELECT #{aircraft_type},#{aircraft_descripte},#{ending_time},#{input_time},#{file_path} FROM DUAL WHERE NOT EXISTS (SELECT id FROM t_aircraft WHERE t_aircraft.aircraft_type = #{aircraft_type}) select id, aircraft_type, aircraft_descripte, ending_time, input_time, file_path from t_aircraft where aircraft_type like #{name} select id, aircraft_type, aircraft_descripte, ending_time, input_time, file_path from t_aircraft select min(id) from t_aircraft