1 declare 2 3 l_start date := to_date('2015-04-29 01:02:03', 'yyyy-mm-dd hh24:mi:ss'); 4 l_end date := to_date('2015-05-15 11:22:33', 'yyyy-mm-dd hh24:mi:ss'); 5 6 l_ym interval year to month; 7 l_ds interval day to second; 8 l_year number; 9 l_month number; 10 l_day number; 11 l_hour number; 12 l_minute number; 13 l_second number; 14 l_str varchar2(100); 15 begin 16 l_ym := numtoyminterval(trunc(months_between(l_end, l_start)), 'month'); 17 l_ds := numtodsinterval(l_end - 18 add_months(l_start, 19 trunc(months_between(l_end, l_start))), 20 'day'); 21 22 select extract(year from l_ym), extract(month from l_ym) 23 into l_year, l_month 24 from dual; 25 26 select extract(day from l_ds), 27 extract(hour from l_ds), 28 extract(minute from l_ds), 29 extract(second from l_ds) 30 into l_day, l_hour, l_minute, l_second 31 from dual; 32 33 l_str := lpad(to_char(l_year), 4, '0') || '年' || 34 lpad(to_char(l_month), 2, '0') || '月' || 35 lpad(to_char(l_day), 2, '0') || '天' || ' ' || 36 lpad(to_char(l_hour), 2, '0') || ':' || 37 lpad(to_char(l_minute), 2, '0') || ':' || 38 lpad(to_char(l_second), 2, '0'); 39 40 dbms_output.put_line(l_str); 41 42 end;