I have converted this to a UTF-8 String by performing the following (in a stand-alone application): String result = new String(bytes, StandardCharsets.
I have also grabbed the byte sequence of one of my tests that was generated by the JDBC controller before it was fed to the PGStream. Question marks have actually been inserted into the database: SELECT * FROM foo WHERE foo_name LIKE 'Anyone-?%'Ģ3 | 34bcb5f2-e7ee-40cf-9103-f2d1bf2ac7acd853d7c6-1703-44d2-aa99-6fd1df84da37 | Anyone-?_l The bytea result of the relevant entry is the following: SELECT foo_name::bytea FROM foo Name | Owner | Encoding | Collate | Ctype | Access privileges Greek Polytonic Unicode Follows the modern Greek hardware layout with additional keys for polytonic accents and Coptic letters. The database is indeed expecting UTF-8: psql -U postgres -h localhost -list A very complete Greek Polytonic keyboard for serious students of classical and modern Greek, with intelligent rules for diacritics and spelling auto-correction. In UTF-8, the Greek lowercase lambda is the byte sequence CE. UTF-8 is just one way of encoding Unicode characters. This is more commonly expressed in hex and written U+03BB or, in Python 'u03bb'. For example, the Greek lowercase lambda is assigned the number 955 in Unicode. JDBC Connector: Tried a couple (8.1, 9.3) A character encoding represents a sequence of those integers as bytes. When exporting a report to Tab Separated Text, or Text format, some text shows strange and incorrect characters. The query and the unicode data that is received by the database are correct so what is causing this problem? OS: RHEL 6.6 Report exported to text shows question marks. However, I think that they are irrelevant to the problem as the Postgres log clearly displays the parameters received by it.
I have excluded the application's code as it is part of a very big project and the relevant pieces are fragmented here and there. Unfortunately, the above did not make any difference. GREEK QUESTION MARK 0x0384: 900: GREEK TONOS.
There is indeed a way to do this, by appending the following in the JDBC connector's URL: jdbc:postgresql://localhost/bar?useUnicode=yes&characterEncoding=UTF-8 Range Decimal Name 0x0000-0x007F: 0-127: Basic Latin 0x0080-0x00FF: 128-255: Latin-1 Supplement 0x0100-0x017F: 256-383: Latin Extended-A 0x0180-0x024F: 384-591: Latin Extended-B 0x0250-0x02AF: 592-687. I thought that perhaps the JDBC connector needs to be told it will be transfering Unicode data. I have also further cornfirmed this by manually inserting an entry to the database: INSERT INTO foo values(25, ‘the_id’, ‘ΑΒΓΔΕΖΗΘ’) Īs you can understand from the above, the database has accepted my values and has succesfully added the Unicode characters to the database.Īt this point, I believe that the problem occurs when these values are pushed from my application to the JDBC connector and into the database. My first guess was that this was a database configuration issue, however I have confirmed (to the best of my knowledge) that Postgres is indeed accepting UTF-8 by performing the following: SHOW server_encoding Whenever an insertion occurs through my application, all Unicode characters (be it Japanese, Greek etc.) are replaced by question marks. For more information, see Unicode Utilities Beta.Ībbreviate Collate UCD format Escape Group by: Info: Punctuation The period and comma are the same as on the standard English keyboard. Properties use ICU for Unicode V13.0 the beta properties support Unicode V14.0β. The keys in yellow are used for placing polytonic diacritical marks (see next page). Unicode Utilities: UnicodeSet Unicode Utilities: UnicodeSet