From: Tom Lane <tgl@sss.pgh.pa.us>
To: jbe-mlist@magnetkern.de
Cc: pgsql-bugs@lists.postgresql.org
Subject: Re: BUG #19053: Inconsistent arithmetic regarding TIMESTAMPTZ and INTERVAL
Date: Mon, 15 Sep 2025 11:41:29 -0400
Message-ID: <615313.1757950889@sss.pgh.pa.us> (raw)
In-Reply-To: <19053-669df0ccf3d14d52@postgresql.org>
References: <19053-669df0ccf3d14d52@postgresql.org>
PG Bug reporting form <noreply@postgresql.org> writes:
> Consider the following calculations:
AFAICS all of these are behaving as-expected. Yeah, it's confusing,
but expecting calendar calculations to have mathematical rigor is
a fool's errand. The intent of what's implemented is to produce
useful results for calculations like
regression=# SELECT TIMESTAMPTZ '2025-03-30' + INTERVAL '1 day';
?column?
------------------------
2025-03-31 00:00:00+02
(1 row)
despite the intervening DST change.
regards, tom lane
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To: pgsql-bugs@postgresql.org
Cc: tgl@sss.pgh.pa.us, jbe-mlist@magnetkern.de, pgsql-bugs@lists.postgresql.org
Subject: Re: BUG #19053: Inconsistent arithmetic regarding TIMESTAMPTZ and INTERVAL
In-Reply-To: <615313.1757950889@sss.pgh.pa.us>
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