Mysql查询当前时间

第一种方法：select current_date；

mysql> select current_date as Systemtime;
±-----------+
| Systemtime |
±-----------+
| 2009-07-29 |
±-----------+

第二种方法：select now()

mysql> select now() as Systemtime;
±--------------------+
| Systemtime |
±--------------------+
| 2009-07-29 19:06:07 |
±--------------------+

第三种方法：select sysdate()

mysql> select sysdate() as Systemtime;
±--------------------+
| Systemtime |
±--------------------+
| 2009-07-29 19:06:45 |
±--------------------+