I have fresh installation of PostgreSQL 9.1.x. Unfortunately, I discovered that OS doesn't support
LC_COLLATE = 'pl_PL.utf8' and
LC_CTYPE = 'pl_PL.utf8'. I read in PostgreSQL documentation that:
On all platforms, the collations named default, C, and POSIX are available. Additional collations may be available depending on operating system support.
Is a way, however to force Windows to support that locale ? I mean a patch, plugin or something.