DECLARE	v_hour		VARCHAR2(2);	v_day		VARCHAR2(2);	v_sqlStr	VARCHAR2(900);	BEGIN	v_hour := to_char(sysdate-1/24,'hh24');	v_day  := to_char(sysdate,'fmdd');	DBMS_OUTPUT.PUT_LINE(v_hour);	v_sqlStr := 'insert into fy_day_'||v_day||'(	select login_name,trunc(sysdate,''hh24''),lab_ip,sum(time_duration) from fy_detail_'||v_day||'		where logout_date >= trunc(sysdate-1/24,''hh24'')		and logout_date < trunc(sysdate,''hh24'')		group by login_name,lab_ip)';EXECUTE IMMEDIATE v_sqlStr;END;