To answer my own question: it seems that the problem is not with postgresql but with the FreeBSD OS. FreeBSD does not support sorting by unicode characters, so I need to recompile the postgresql server with "use ICU for unicode collation" flag. 2016.03.06. 10:13 keltezéssel, Nagy László Zsolt írta: > Example database on a Unix system: > > CREATE DATABASE test > TEMPLATE = template0 > ENCODING = 'UTF8' > LC_COLLATE = 'hu_HU.UTF-8' > LC_CTYPE = 'hu_HU.UTF-8' > CONNECTION LIMIT = -1; -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin