Re: question about age()

On 8/29/13, Andreas Kretschmer <akretschmer(at)spamfence(dot)net> wrote:
> is there a bug in age()?
>
> test=*# select *, age(birthday), age (current_date-1, birthday) from
> birthday ;
> id | birthday | age | age
> ----+------------+---------+-------------------------
> 1 | 2010-08-29 | 3 years | 2 years 11 mons 30 days
> (1 row)
>
> Time: 0,322 ms
> test=*# select * from birthday where age(birthday) != age (current_date-1,
> birthday);
> id | birthday
> ----+----------
> (0 rows)
>
> '3 years' != '2 years 11 mons 30 days', but i got 0 rows, why?
>
>
> I'm using 9.2.4.

What is the content of the field 'birthday''? My guess is there's a
null value for the field, in which case you are comparing two nulls.
--
Mike Nolan