How to convert no of days in below format

Question

i have two dates fields.
startdate and enddate
i am getting no of days from enddate - startdate
for example
startdate = 01-jan-11
enddate = 31-mar-11
select to_date('15-APR-12') - to_date('01-JAN-11') from dual;
470i want to display above query result in
1 year  3 months 15 daysit is possible.?

Answer 1

The solution will not return consistent results always :
WITH
     tst AS
          SELECT
               to_date('15.01.2012','dd.mm.yyyy') d1,
               to_date('16.01.2011','dd.mm.yyyy') d2
          FROM
               dual
SELECT
     extract(YEAR FROM (d1-d2) YEAR TO MONTH )
     ||' year(s)' as yr,
     extract(MONTH FROM (d1-d2) YEAR TO MONTH )
     ||' month(s)' as mnt,
     (d1-TRUNC(d1,'mm')+1)
     ||' day(s)' as dy
FROM
     tst
YR                                               MNT                                               DY       
1 year(s)                                        0 month(s)                                        15 day(s)