mysql查看當前時間

select current_timestamp from dual;
select current_timestamp();
select current_time  from dual;
select current_time();
select current_date from dual;
select current_date();
select now()  from dual;
select now();
select curdate() from dual;
select curtime();

將當前時間插入數據庫
insert into tt(user_id,login_time) values (1,CURRENT_TIMESTAMP);