How to specify the UTF-8 encoding?

[JinXiu2023]

Hello, I have a question about encoding. I wonder whether the built-in function concat() produce a UTF-8 encoding string or not. And how to specify the UTF-8 encoding string if the concat() doesn't give a UTF-8 encoding string?

Thanks for your answers.

[anderseknert]

OPA only supports UTF-8, so that’s the default. If anything doesn’t work with UTF-8, that’s likely a bug.

[JinXiu2023]

Ok. Thank you.