MINUTE?????????????????????????????????????????????
????????????????????????????????????????????????CLOB???LONG VARCHAR???XML??????????????????????????????????????????????????????????????????????????????????????????????????? ????????????0??????59?????????????????????????????????null??????????????????????????????????????????????????????null????????????????????????????????????????????????null?????????????????????null?????????
MINUTE ( ??? )
???flights??????????????????departure_time??????6:00??????6:30AM?????????????????????????????????????????????
SELECT * FROM flights WHERE HOUR(departure_time) = 6 and MINUTE(departure_time) < 31;