獲得以秒爲

Question

兩個MySQL日期時間列之間的差異

可能重複：
MYSQL - datetime to seconds

如果我有一個MySQL表日期時間列，我怎麼能得到現在的區別（）和該列在幾秒鐘？

Answer 1

通過TIMEDIFF你可以秒

SELECT TIME_TO_SEC(TIMEDIFF('2007-01-09 10:24:46','2007-01-09 10:23:46')); 

或本

SELECT DATEDIFF('2007-12-31 10:02:00','2007-12-30 12:01:01') * 24*60*60; 
// result: 86400 the difference in seconds for days. 

或獲取differense：

SELECT TIMESTAMPDIFF(SECOND,'2007-12-30 12:01:01','2007-12-31 10:02:00'); 
// result: 79259 the difference in seconds with the time. 

Answer 2

試試這個：SELECT NOW（） - my_col AS my_diff