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From: Peter Eisentraut <[email protected]>
To: Jeff Davis <[email protected]>
To: Pavel Stehule <[email protected]>
Cc: Andres Freund <[email protected]>
Cc: Tom Lane <[email protected]>
Cc: Thomas Munro <[email protected]>
Cc: Robert Haas <[email protected]>
Cc: [email protected]
Subject: Re: Move defaults toward ICU in 16?
Date: Mon, 20 Feb 2023 15:55:45 +0100
Message-ID: <[email protected]> (raw)
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On 17.02.23 21:43, Jeff Davis wrote:
>> select row_number() over (order by nazev collate "cs-x-icu"), nazev
>> from obce
>> except select row_number() over (order by nazev collate "cs_CZ"),
>> nazev from obce;
>>
>> returns a not empty set. So minimally for Czech collate, an index
>> rebuild is necessary
> Yes, that's true of any locale change, provider change, or even
> provider version change.

I'm confused.  We are not going to try to change existing databases to a 
different collation provider during pg_upgrade, are we?

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