MySQL自带的日期函数TIMESTAMPDIFF计算两个日期相差的秒数、分钟数、小时数、天数、周数、季度数、月数、年数,当前日期增加或者减少一天、一周等等。
SELECT TIMESTAMPDIFF(类型,开始时间,结束时间)
相差的秒数:
SELECT TIMESTAMPDIFF(SECOND,1993-03-23 00:00:00,DATE_FORMAT(NOW(), \%Y-%m-%d %H:%i:%S))
相差的分钟数:
SELECT TIMESTAMPDIFF(MINUTE,1993-03-23 00:00:00,DATE_FORMAT(NOW(), \%Y-%m-%d %H:%i:%S))
相差的小时数:
SELECT TIMESTAMPDIFF(HOUR,1993-03-23 00:00:00 00:00:00,DATE_FORMAT(NOW(), \%Y-%m-%d %H:%i:%S))
相差的天数:
SELECT TIMESTAMPDIFF(DAY,1993-03-23 00:00:00,DATE_FORMAT(NOW(), \%Y-%m-%d %H:%i:%S))
相差的周数:
SELECT TIMESTAMPDIFF(WEEK,1993-03-23 00:00:00,DATE_FORMAT(NOW(), \%Y-%m-%d %H:%i:%S))
相差的季度数:
SELECT TIMESTAMPDIFF(QUARTER,1993-03-23 00:00:00,DATE_FORMAT(NOW(), \%Y-%m-%d %H:%i:%S&#