On the day with the hottest temperature ever in 2014, how many bike trips started from the station 2nd at Folsom?
hottest temperature refers to max_temperatutre_f; in 2014 refers to date LIKE '%2014'; started from station refers to start_station_name; start_station_name = '2nd at Folsom';
SELECT COUNT(T1.start_station_name) FROM trip AS T1 INNER JOIN weather AS T2 ON T2.zip_code = T1.zip_code WHERE T2.date LIKE '%2014%' AND T2.zip_code = 94107 AND T1.start_station_name = '2nd at Folsom' ORDER BY T2.max_temperature_f DESC LIMIT 1