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From: Vladimir Sitnikov <[email protected]>
To: Dave Cramer <[email protected]>
Cc: Manav Kumar <[email protected]>
Cc: [email protected]
Cc: Laurenz Albe <[email protected]>
Subject: Re: Understanding DateStyle guc in startup packet
Date: Mon, 19 May 2025 18:37:24 +0300
Message-ID: <CAB=Je-EmfXoyBRm2LefkxugqNGPta7vf=Ky8ycYpkd02_-WX_w@mail.gmail.com> (raw)
In-Reply-To: <CADK3HHKC-1iTEZNT4fvjS-mBkLYVmKQVG3Kvq9_KHXnctACUjA@mail.gmail.com>
References: <CAPhCW+-oyivUiBiP5nOMQNxQzXLnT62SvCZ1oq7rqZkHq34KGA@mail.gmail.com>
	<CAB=Je-Gznb3j_M--EAn9zW0cHLzgMg_YyWxWGM==g_kRfxEzrA@mail.gmail.com>
	<CADK3HHKC-1iTEZNT4fvjS-mBkLYVmKQVG3Kvq9_KHXnctACUjA@mail.gmail.com>

>Why would you want to change it?

Applications might have their own view on the way DateStyle connection
property should be set.
It could make a difference if the app uses things like select
'03-05-2025'::date.

Of course, it would be great if the app code could resist from casting text
to dates, however,
I think the driver should stand in the way there by enforcing a very
specific DateStyle value.

To me, DateStyle looks like timezone, and client_encoding which we
currently enforce, yet we could do better and skip enforcing the values.

Vladimir


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