如何才能找到MySQL中兩個日期之間的差異？

Question

如何找到MySQL中兩個日期之間的差異？

Answer 1

DATEDIFF返回兩個日期之間的天數的區別：

http://dev.mysql.com/doc/refman/5.5/en/date-and-time-functions.html#function_datediff

Answer 2

mysql> select current_date()>'2011-01-01 12:01:01'; 
+--------------------------------------+ 
| current_date()>'2011-01-01 12:01:01' | 
+--------------------------------------+ 
|         1 | 
+--------------------------------------+ 
1 row in set (0.00 sec) 

mysql> select '2011-01-01 12:01:01' > current_date(); 
+----------------------------------------+ 
| '2011-01-01 12:01:01' > current_date() | 
+----------------------------------------+ 
|          0 | 
+----------------------------------------+ 
1 row in set (0.00 sec) 

mysql> 

Answer 3

學習DATEDIFF

eg :  SELECT DATEDIFF('2007-12-31 23:59:59','2007-12-30');