I worked around this problem returning the difference between the two
dates, using extract doy from both.
Anyway, this will cause a bug on my code when changing the year. Any ideas?
Tom Lane wrote:
>Theodore Petrosky <tedpet5(at)yahoo(dot)com> writes:
>>wow.... at first I thought I had my head around a leap
>>year problem so I advanced your query a year....
>I think what's going on here is a difference of interpretation about
>whether an "M months D days" interval means to add the months first
>or the days first. For instance
>2005-02-18 plus 2 months = 2005-04-18, plus 24 days = 2005-05-12
>2005-02-18 plus 24 days = 2005-03-14, plus 2 months = 2005-05-14
>The timestamp-plus-interval operator is evidently doing addition the
>first way, but it looks like age() is calculating the difference in a
>way that implicitly corresponds to the second way.
>I have some vague recollection that this has come up before, but
>I don't recall whether we concluded that age() needs to be changed
>or not. In any case it's not risen to the top of anyone's to-do list,
>because I see that age() still acts this way in CVS tip.
> regards, tom lane
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