数据库连接orcal要怎样获取系统时间
https://blog.csdn.net/weixin_42468580/article/details/116470010
select sysdate from dual;
select Current_date from dual;
select SYSTIMESTAMP from dual;
//方法1
TO_CHAR(SYSDATE(),'YY/MM/DD HH24:MI:SS)
//方法2
TO_DATE(SYSDATE(),'YY/MM/DD HH24:MI:SS)