Object names and literals returned by HELP and SHOW statements, and by requests that specify the EXPLAIN modifier, are designed to be legible, and therefore make use of the full current client character set. Generally, the encoding of such characters is not compatible with differing client (session) character sets.
- For SQL SHOW and EXPLAIN, any literals and object names that include characters not in the repertoire of the session character set, or that are otherwise unprintable, are shown as UNICODE delimited literals or identifiers. Specific incompatible characters are escaped to hexadecimal. See Object Names .
- For SQL HELP, the Column SQL Name and Title fields identify names/strings containing characters that are not translatable into the client character set, and show replacement characters for individual untranslatable characters.