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

From: Bruce Momjian <bruce(at)momjian(dot)us>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Dave Cramer <davecramer(at)postgres(dot)rocks>, Robert Treat <rob(at)xzilla(dot)net>, Kirk Parker <khp(at)equatoria(dot)us>, Richard Neill <rjn(at)richardneill(dot)org>, github(at)richardneill(dot)org, pgsql-docs(at)lists(dot)postgresql(dot)org
Subject: Re: Please clarify that Timestamp with Timezone doesn't preserve the timezone.
Date: 2026-05-14 19:46:14
Message-ID: agYmhgPtEmi2QH_X@momjian.us
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On Thu, May 14, 2026 at 02:02:15PM -0400, Tom Lane wrote:
> Bruce Momjian <bruce(at)momjian(dot)us> writes:
> > Okay, here is the patch with "conversion".
>
> timetz does store a UTC offset, so it needs to be discussed separately.
> I don't think applying the same verbiage to time and timestamp will
> produce anything except more confusion.

I see what you mean --- updated patch attached.

If we want to be more explicit we could change "including time zone
conversion" to "including time zone conversion to/from UTC".

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

Do not let urgent matters crowd out time for investment in the future.

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time_zone.diff text/x-diff 2.3 KB

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