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From: Peter Eisentraut <[email protected]>
To: Noah Misch <[email protected]>
To: Jeff Davis <[email protected]>
Cc: Daniel Verite <[email protected]>
Cc: Robert Haas <[email protected]>
Cc: Jeremy Schneider <[email protected]>
Cc: [email protected]
Subject: Re: Built-in CTYPE provider
Date: Wed, 3 Jul 2024 00:05:09 +0200
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
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On 02.07.24 18:51, Noah Misch wrote:
> On Mon, Jul 01, 2024 at 06:19:08PM -0700, Jeff Davis wrote:
>> On Mon, 2024-07-01 at 16:03 -0700, Noah Misch wrote:
>>>    An alternative would be to make pg_upgrade reject
>>> operating on a cluster that contains use of $SUBJECT.
>>
>> That wouldn't help anyone.
> 
> Can you say more about that?  For the last decade at least, I think our
> standard for new features has been to error rather than allow an operation
> that creates a known path to wrong query results.  I think that's a helpful
> standard that we should continue to follow.

I don't think the builtin locale provider is any different in this 
respect from the other providers:  The locale data might change and 
there is a version mechanism to track that.  We don't prevent pg_upgrade 
in scenarios like that for other providers.

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