表:userlogin_his
字段:usrname nvarchar2(10),logintime timestamp(6)
1 --insert records 2 insert into userlogin_his(usrname,logintime) values(\'test\',to_timestamp(to_char(sysdate,\'YYYY-MM-DD HH24:MI:SS\'),\'YYYY-MM-DD HH24:MI:SS\')); 3 insert into userlogin_his(usrname,logintime) values(\'test1\',to_timestamp(to_char(systimestamp,\'YYYY-MM-DD HH24:MI:SS.FF\'),\'YYYY-MM-DD HH24:MI:SS.FF\')); 4 insert into userlogin_his(usrname,logintime) values(\'test2\',systimestamp); 5 insert into userlogin_his(usrname,logintime) values(\'test3\',sysdate); 6 7 --query records 8 select usrname,to_char(logintime,\'YYYY-MM-DD HH24:MI:SS.FF\') from userlogin_his;
查询结果如下:
USRNAME TO_CHAR(LOGINTIME,\'YYYY-MM-DDHH24:MI:SS.FF\') test 2017-03-30 18:09:59.000000 test1 2017-03-30 18:13:27.505000 test2 2017-03-30 18:28:16.521000 test3 2017-03-30 18:29:48.000000
结果分析: 从以上语句和执行结果来看,第4行代码是最简洁明了的。推荐采用。