Re: [GENERAL] Changing collate & ctype for an existing database

rihad <rihad@mail.ru> writes:
> What if only English letters are used in the textual indices (ascii
> 0-127), would they still be impacted after datctype&datcollate
> "C"->"en_US.UTF-8" change?

Yes, as even minimal testing would have told you.  C sort order is
more case-sensitive, for instance.

            regards, tom lane