DECLARE	dd			BINARY_INTEGER;	v_sqlStr	VARCHAR2(900);	BEGIN	select to_char(sysdate,'FMDD') into dd from dual;	v_sqlStr:='create table datazf_'||dd||'(login_name varchar2(32),login_date date,logout_date date,lab_ip varchar2(32),time_duration number(10))';EXECUTE IMMEDIATE v_sqlStr;END;