取當前時間:
mysql>
select
now();
+
---------------------+
| now() |
+
---------------------+
| 2011-08-08 13:59:30 |
+
---------------------+
前一小時的時間:
mysql>
select
date_sub(now(), interval 1
hour
);
+
----------------------------------+
| date_sub(now(), interval 1
hour
) |
+
----------------------------------+
| 2011-08-08 12:59:31 |
+
----------------------------------+
mysql>
select
date_sub(now(), interval 1
hour
);
+
----------------------------------+
| date_sub(now(), interval 1
hour
) |
+
----------------------------------+
| 2011-08-08 14:59:50
|
+
----------------------------------+