Gordon Luk <gordon(at)gforce(dot)ods(dot)org> writes:
> Yes, HKSCS just an extension of Big5, if pgsql could support natively,
> that is lovely. :-{}
Presumably you could extend the existing big5 support, then. See
src/backend/utils/mb/conversion_procs/utf8_and_big5/
regards, tom lane