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From: Michael Paquier <[email protected]>
To: Joseph Koshakow <[email protected]>
Cc: PostgreSQL Hackers <[email protected]>
Subject: Re: date_trunc invalid units with infinite value
Date: Thu, 5 Dec 2024 14:34:41 +0900
Message-ID: <[email protected]> (raw)
In-Reply-To: <CAAvxfHc4084dGzEJR0_pBZkDuqbPGc5wn7gK_M0XR_kRiCdUJQ@mail.gmail.com>
References: <CAAvxfHc4084dGzEJR0_pBZkDuqbPGc5wn7gK_M0XR_kRiCdUJQ@mail.gmail.com>

On Sun, Dec 01, 2024 at 03:09:17PM -0500, Joseph Koshakow wrote:
> When looking at the date_trunc function, I noticed that it wasn't
> rejecting invalid units if the value was infinite. It's slightly
> annoying to fix this, but we already do something very similar for
> date_part. I have attached a patch that would fix this issue, let me
> know if you think it's worth pursuing.

I agree that it is inconsistent that we allow infinite values to go
through this function call even for fields that are not listed as
supported by the documentation.  So, yes, I think that what you are
doing the right thing by applying the check based on the units
supported, but I also doubt that it is something that we could
backpatch as it would cause queries to work now to suddenly break.

Thoughts and comments from others are welcome.
--
Michael


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