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 |
+---------------------+