| Oracle® Database SQL Reference 10g Release 1 (10.1) Part Number B10759-01 |
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NLS_CHARSET_ID returns the character set ID number corresponding to character set name text. The text argument is a run-time VARCHAR2 value. The text value 'CHAR_CS' returns the database character set ID number of the server. The text value 'NCHAR_CS' returns the national character set ID number of the server.
Invalid character set names return null.
The following example returns the character set ID of a character set:
SELECT NLS_CHARSET_ID('ja16euc')
FROM DUAL;
NLS_CHARSET_ID('JA16EUC')
-------------------------
830