From: Bruce Momjian <bruce@momjian.us>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: davecramer@postgres.rocks
Cc: pgsql-docs@lists.postgresql.org
Subject: Re: Incorrect/confusing information about timetz
Date: Thu, 7 Sep 2023 17:00:59 -0400
Message-ID: <ZPo6C2s9PDAwfKeS@momjian.us> (raw)
In-Reply-To: <1757505.1694119308@sss.pgh.pa.us>
References: <168451942371.714.9173574930845904336@wrigleys.postgresql.org>
<ZPozoUwxa80aarQp@momjian.us>
<1757505.1694119308@sss.pgh.pa.us>
On Thu, Sep 7, 2023 at 04:41:48PM -0400, Tom Lane wrote:
> Bruce Momjian <bruce@momjian.us> writes:
> > Uh, yes to the storage part, no to the output part. ;-) Postgres does
> > store the timetz time zone offset, but it doesn't adust it once it is
> > stored so doesn't adjust for the session time zone:
>
> Right, it just stores a numeric UTC offset.
>
> > Do we want to document this?
>
> Section 8.5.1.2. Times already says "The appropriate time zone offset
> is recorded in the time with time zone value." Maybe that could be
> made a little more precise, say "The resolved numeric offset from UTC
> is recorded in the time with time zone value."
Yeah, there is no mention of it odd output behavior. Here is a patch to
add that.
--
Bruce Momjian <bruce@momjian.us> https://momjian.us
EDB https://enterprisedb.com
Only you can decide what is important to you.
Attachments:
[text/x-diff] timetz.diff (673B, ../ZPo6C2s9PDAwfKeS@momjian.us/2-timetz.diff)
download | inline diff:diff --git a/doc/src/sgml/datatype.sgml b/doc/src/sgml/datatype.sgmlindex 8d32a8c9c5..240d4875d2 100644--- a/doc/src/sgml/datatype.sgml+++ b/doc/src/sgml/datatype.sgml@@ -2040,7 +2040,8 @@ MINUTE TO SECOND
<literal>America/New_York</literal>. In this case specifying the date
is required in order to determine whether standard or daylight-savings
time applies. The appropriate time zone offset is recorded in the
- <type>time with time zone</type> value.+ <type>time with time zone</type> value and is output as stored; + it is not adjusted to the active time zone.
</para>
<table id="datatype-datetime-time-table">
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To: pgsql-docs@postgresql.org
Cc: bruce@momjian.us, tgl@sss.pgh.pa.us, davecramer@postgres.rocks, pgsql-docs@lists.postgresql.org
Subject: Re: Incorrect/confusing information about timetz
In-Reply-To: <ZPo6C2s9PDAwfKeS@momjian.us>
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