Re: Please clarify that Timestamp with Timezone doesn't preserve the timezone.

On Thu, May 14, 2026 at 07:57:21AM -0400, Robert Treat wrote:
> > I see your point. I went with adding the wording "no time zone
> > adjustment" and "with time zone adjustment" in the table. Patch
> > attached. You can see the output at:
>
> The quibble I have with the term "time zone adjustment" is that it
> implies there will be some adjustment, but while you can change your
> timezone preferences to display a timestamptz value in whatever time
> zone you want, the value itself is never adjusted; it is stored as a
> universal moment in time that doesn't change, regardless of the window
> dressing around it. For this reason I have taken to describing that
> difference between the two as that timestamptz stores the date and
> time with timezone awareness, and timestamp is date and time with no
> timezone awareness. Perhaps that might work better here as well?

I used "adjustment" because the value is adjusted on input, and adjusted
on output. I would say the value is not "aware" of the time zone
because once it is internally stored as UTC it is no longer aware of the
original time zone.

--
Bruce Momjian <bruce(at)momjian(dot)us> https://momjian.us
EDB https://enterprisedb.com

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