Hi,
I have a problem with proper collation of UTF-8 strings using PostgreSQL
version 9.2.4 under Debian Linux 6.0 with de_DE.utf8 (but en_US behaves
the same) locale:
CREATE TABLE test_collation ( q text );
INSERT INTO test_collation (q) VALUES ('aa'), ('ac'), ('a&b');
SELECT * FROM test_collation ORDER BY q COLLATE "de_DE";
q
-----
aa
a&b
ac
I need the "&" character to be sorted at the beginning or at the end of
the alphabet, but it seems like it is simply ignored. The space
character (" ") is treated the same way (just swap the ampersand in
previous example with a space).
I made a test on ICU pages (http://site.icu-project.org/) and there I
get proper collation: 1. a&b, 2. aa, 3. ac. Screenshot:
http://software.eq.cz/icu_collation_de_DE.png
Is there a way to achieve this collation (note also the order of the
characters with umlaut on the screenshot) with PostgreSQL? Or is it a
glibc bug?
Thanks,
r.
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