If an object name or literal returned in an EXPLAIN report includes a character not in the the session character set, or is otherwise unprintable, the name or literal is shown as a UNICODE delimited identifier or literal.
Each non-representable character is escaped to its hexadecimal equivalent.
The system uses BACKSLASH (U+005C), if available, as the escape character. If BACKSLASH is not available:
- If either YEN SIGN (U+00A5) or WON SIGN (U+20A9) replaces BACKSLASH in the session character set, the system uses the replacement as the escape character.
- If none of the preceding characters is available, the system uses NUMBER SIGN (U+0023).
Object names that are translatable to the session character set, but are not lexically distinguishable as names are enclosed in double quotation marks.
For information on object naming, see Teradata Vantage™ - SQL Fundamentals, B035-1141.