Re: Default to TIMESTAMP WITH TIME ZONE?

From: Andrew Dunstan <andrew(at)dunslane(dot)net>
To: Simon Riggs <simon(dot)riggs(at)enterprisedb(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Bruce Momjian <bruce(at)momjian(dot)us>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Default to TIMESTAMP WITH TIME ZONE?
Date: 2021-08-13 16:23:19
Message-ID: 4cde3a46-ab29-c922-fdfa-5a242079c676@dunslane.net
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On 8/12/21 7:25 PM, Simon Riggs wrote:
> I thought we found that changing behavior via GUC usually ends badly.
>> Yeah. Changing from SQL-spec to not-SQL-spec behavior is going to be
>> one tough sell to begin with, even without the point that that's been
>> our behavior for over two decades. But proposing to do it via a GUC
>> is just not-even-worth-discussing territory. That would force every
>> wannabe-portable program to cope with both behaviors; which would
>> end up meaning that not only do you still have to take care to write
>> WITH TIME ZONE when you want that, but *also* you'd have to be sure
>> to write WITHOUT TIME ZONE when you want that. In short, the worst
>> of both worlds.
> All of which I agree with, but this wasn't a cute idea of mine, this
> was what our users have requested because of the extreme annoyance
> caused by the current behavior.
>

What do other DBMSs do? This strikes me as primarily an education issue
(I did a webinar on it not that long ago)

If you want to protect against people using tz-less timestamp, maybe an
event trigger would be a solution, although maybe that's using a
sledgehammer to crack a nut.

cheers

andrew

--
Andrew Dunstan
EDB: https://www.enterprisedb.com

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