The R interpreter can only parse programs written in UTF8 or the ASCII character set; therefore, R programs must be written in the LATIN character set. Other character sets, such as UNICODE, cannot be parsed successfully by R.
The table operators containing R programs should be written in the LATIN character set. Data stored in table columns that is referenced by the program must also be in the LATIN character set. Even LOB data has to be in the LATIN character set. Otherwise errors may be thrown or unexpected results may be produced.