mysql 获取系统时间
mysql> select now();
+——————————-+
| now() |
+——————————-+
| 2011-06-11 12:00:54 |
+——————————-+
1 row in set (0.00 sec)
mysql> select sysdate();
+——————————-+
| sysdate() |
+——————————-+
| 2011-06-11 12:00:54 |
+——————————-+
1 row in set (0.00 sec)
mysql> select curdate();
+——————+
| curdate() |
+——————+
| 2011-06-11 |
+——————+
1 row in set (0.00 sec)
mysql> select current_date;
+———————+
| current_date |
+———————+
| 2011-06-11 |
+———————+
1 row in set (0.00 sec)
mysql> select curtime();
+—————-+
| curtime() |
+—————-+
| 12:00:54 |
+—————-+
1 row in set (0.00 sec)
mysql> select current_time;
+———————+
| current_time |
+———————+
| 12:00:54 |
+———————+
1 row in set (0.00 sec)
- mysql (unix 时间戳、日期)转换函数:
unix_timestamp(),
unix_timestamp(date),
from_unixtime(unix_timestamp),
from_unixtime(unix_timestamp,format)
下面是示例:
select unix_timestamp(); — 1218290027 ===得到当前时间的unix时间值
将具体时间来转换成timestamp
select unix_timestamp(‘2008-08-08’); — 1218124800
select unix_timestamp(‘2008-08-08 12:30:00’); — 1218169800
将timestamp来转换成具体时间
select from_unixtime(1218290027); — ‘2008-08-09 21:53:47’
select from_unixtime(1218124800); — ‘2008-08-08 00:00:00’
select from_unixtime(1218169800); — ‘2008-08-08 12:30:00’
select from_unixtime(1218169800, ‘%y %d %m %h:%i:%s %x’); — ‘2008 8th august 12:30:00 2008’
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