CREATE TABLE weather (date VARCHAR, zip_code VARCHAR, min_dew_point_f INT)

On which day and in which zip code was the min dew point lower than any day in zip code 94107?
SELECT date, zip_code FROM weather WHERE min_dew_point_f < (SELECT MIN(min_dew_point_f) FROM weather WHERE zip_code = 94107)
SELECT "date", "zip_code" FROM "weather" WHERE "min_dew_point_f" < (SELECT MIN("min_dew_point_f") FROM "weather" WHERE "zip_code" = 94107)