Here's small patch to fix case conversion problems for ILIKE and (Oracle Compat.) lower/upper functions. (Related bug report is here: http://archives.postgresql.org/pgsql-bugs/2005-10/msg00001.php)
In tests it succeeded for Turkish characters while using LATIN5 encoding. But when encoding is UNICODE it still doesn't work. (IMHO, for latin-N encodings there will be no compatibility problems; for Unicode, I've no idea.) Regards.
case_conversion.patch
Description: Binary data
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