Oracle timestamp cannot display detailed data on the client side
Use the following statement: O_CHAR(pubtime,'yymmdd HH:mm: ss'), for example:
select id,TO_CHAR(pubtime,'yymmdd HH:mm:ss'),content from bj_ref.gz_twinfo_ref where user_id=2603 and TO_CHAR(pubtime,'yyymmdd HH:mm:ss')>='20140704 20:58:42' and author ='Southern Daily' order by id asc;
That's it.