=?utf-8?q?PG_Bug_reporting_form?= <noreply(at)postgresql(dot)org> writes:
> When using an identifier not quoted which includes an uppercase letter
> (Spanish Ñ, Unicode U+00D1), it doesn't get transformed to lowercase (ñ,
> Unicode U+00F1) as expected.
PG's downcasing transform is only applied to single-byte characters.
So Ñ could be transformed in LATIN1 encoding, but not UTF8. There are
various practical reasons why this is unlikely to change soon.
regards, tom lane