MySQL 8.0 FAQ: Connectors & APIs The  utf8  character set permits only  UTF-8  characters that take up to three bytes. This has led to reports such as that found in Bug #12600  which we rejected as “not a bug” . With  utf8   MySQL must truncate an input string when it encounters bytes that it does no understand. Otherwise  it is unknown how long the bad multibyte character is. One possible workaround is to use  ucs2  instead of  utf8   in which case the “bad”  characters are changed to question marks. However  no truncation takes place. You can also change the data type to  BLOB  or  BINARY   which perform no validity checking. No. The term “CJKV”  ( Chinese Japanese Korean Vietnamese ) refers to Vietnamese character sets which contain Han (originally Chinese) characters. MySQL supports the modern Vietnamese script with Western characters  but does not support the old Vietnamese script using Han characters. As of MySQL 5.6  there are Vietnamese collations for Unicode character sets  as described in Section 10.10.1  “Unicode Character Sets” . The Japanese translation of the MySQL 5.6 manual can be downloaded from https://dev.mysql.com/ doc/. The following resources are available: Yes. For common questions  issues  and answers relating to the MySQL Connectors and other APIs  see the following areas of the Manual: 5268 •MySQL Connector/J 8.0 Developer Guide •Connector/NET Programming •Connector/ODBC Notes and Tips •Common Problems with MySQL and PHP •Using C API Features •Visit the MySQL Character Sets  Collation  Unicode Forum. http://forums.mysql.com/ also provides foreign-language forums. •View feature requests relating to character set issues at http://tinyurl.com/y6xcuf. •A listing of MySQL user groups can be found at https://wikis.oracle.com/display/mysql/List+of +MySQL+User+Groups. •The  utf8mb4    utf16    utf16le   and  utf32  character sets support BMP characters  as well as supplementary characters outside the BMP. A.11.19. Where can I get help with CJK and related issues in MySQL? A.11.18. Where can I find translations of the MySQL Manual into Chinese  Japanese  and Korean? A.11.17. Does MySQL permit CJK characters to be used in database and table names? A.11.16. Should “CJK”  be “CJKV” ? A.12 MySQL 8.0 FAQ: Connectors & APIs