On Thu, Aug 29, 2013 at 09:11:07PM +0200, Andreas Kretschmer wrote:

> 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?

What does

        select age(birthday) = age (current_date-1, birthday) from birthday;

say ?
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