Re: GB18030-2022 Support in PostgreSQL

On Mon, Aug 4, 2025 at 3:08 PM JiaoShuntian <jiaoshuntian@highgo.com> wrote:
> I noticed that PostgreSQL currently supports GB18030 encoding based on the older GB18030-2000 standard (as seen in
commitslike extend GB18030 conversion). However, China has since updated its mandatory character set standard to
GB18030-2022,which includes additional characters and stricter compliance requirements.GB18030-2022 is now the official
standardin China, and ensuring PostgreSQL’s full compliance would be beneficial for users in Chinese-speaking regions. 

This is a non-backwards-compatible change:

https://www.unicode.org/L2/L2022/22274-disruptive-changes.pdf
https://www.unicode.org/L2/L2023/23003r-gb18030-recommendations.pdf

There is a risk of breaking applications, although only a few dozen
mappings changed. If it were added as a separate encoding, users could
opt in.

--
John Naylor
Amazon Web Services