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From: Daniel Verite <[email protected]>
To: Jeff Davis <[email protected]>
Cc: [email protected]
Subject: Re: Use CASEFOLD() internally rather than LOWER()
Date: Sat, 28 Feb 2026 14:27:12 +0100
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>

	Jeff Davis wrote:

> There are a number of internal callers of LOWER(), and conceptually
> those should all be using CASEFOLD(). Patches attached.

I tried 0001 with a non-UTF8 database and got quickly stuck:

create database latin9 encoding='LATIN9' 
 template=template0
 locale='fr_FR.ISO-8859-15@euro';

\c latin9

select 'abc' ilike 'bc';
ERROR:	Unicode case folding can only be performed if server encoding is UTF8

Presumably the internal calls to casefold should be conditionalized
on the encoding being UTF-8?


Best regards,
-- 
Daniel Vérité 
https://postgresql.verite.pro/

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