On Thu, Jul 15, 2010 at 4:24 PM, Tom Lane <t...@sss.pgh.pa.us> wrote: > The problem with not doing that is it breaks hashing --- hash joins and > hash aggregation being the real pain points. > > citext works around this in a rather klugy fashion by decreeing that two > strings are equal iff their str_tolower() conversions are bitwise equal. > So it can hash the str_tolower() representation. But that's kinda slow > and it fails in the general case anyhow, I think.
I think the general equivalent would be to call strxfrm and hash the result of that. -- greg -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
