From: | r d <rd0002(at)gmail(dot)com> |
---|---|
To: | Daniele Varrazzo <daniele(dot)varrazzo(at)gmail(dot)com> |
Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, pgsql-general(at)postgresql(dot)org |
Subject: | Re: Question about PARTIAL DATE type/s |
Date: | 2012-10-07 21:12:53 |
Message-ID: | CALtFtE+3+469HtdJcWQTGiXcNzONG+B91ne4wXy0Wsg71JKcTQ@mail.gmail.com |
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Lists: | pgsql-general |
I suspected that this would be the answer.
Thank you lots for your kind help, Daniele & Tom [?]
On 7 October 2012 16:46, Daniele Varrazzo <daniele(dot)varrazzo(at)gmail(dot)com>wrote:
> On Sun, Oct 7, 2012 at 3:03 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> > Daniele Varrazzo <daniele(dot)varrazzo(at)gmail(dot)com> writes:
> >> Note: it exploits to_date() parsing '200013' as '2001-01', which is
> >> reasonable but haven't found documented and don't know how much
> >> reliable. Writing a safer "one month later" function is left as
> >> exercise.
> >
> > Consider adding '1 month'::interval to the month start date.
> >
> > (This function relies on text-munging way too much for my taste.
> > There's almost always a better way to do it than that.)
>
> Didn't realize intervals store months/days info separately: I thought
> an interval was just a vector in the timestamp space. Nice surprise.
>
> -- Daniele
>
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