From: | Ken Tanzer <ken(dot)tanzer(at)gmail(dot)com> |
---|---|
To: | Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com> |
Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Sebastien Flaesch <sebastien(dot)flaesch(at)4js(dot)com>, pgsql-general <pgsql-general(at)lists(dot)postgresql(dot)org> |
Subject: | Re: Intervals and ISO 8601 duration |
Date: | 2023-01-14 00:28:01 |
Message-ID: | CAD3a31Vk7z_ADWt8qtySB+An8aFTGmYvT5979Da0JGhDoy3yUg@mail.gmail.com |
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Lists: | pgsql-general |
On Fri, Jan 13, 2023 at 3:44 PM Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com>
wrote:
> If I am following what you want is to_char(<interval>,'HH24:MM:SS') to
> be equal, correct?
>
Not really. My original question was:
[since intervals are stored internally as months, days and microseconds...]
> What Postgres actually stores for an interval is three fields:
> > months, days, and microseconds.
> *Is there a way to view/extract this raw data for any given interval?*
And again, I don't want to make anything equal, I'm looking for ways to get
info about the non-identicalness.
I think we've established these two intervals are equal but not identical:
- '1 day 2 hours'::interval
- '26 hours'::interval2
Given that, my questions:
1. Is the internal representation in months, days and microseconds
different for these two intervals?
2. (If no, what else is it that makes them non-identical?)
3. Is there a way to access the internal representation?
And thanks to all of you who have responded!
Cheers,
Ken
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