Oracle NLS_CHARSET_ID function

Description

The Oracle NLS_CHARSET_ID function is used to return the character set ID number corresponding to character set name string.

Invalid character set names return null.

Uses of Oracle NLS_CHARSET_ID Function

• Retrieve Character Set ID: Obtain the ID number of a specified character set by its name.


• Validate Character Set Names: Check if a given character set name is valid by verifying if the function returns a non-null value.


• Database Configuration: Assist in configuring or querying database settings that depend on character set IDs.


• Character Set Conversions: Facilitate conversions and operations that require knowing the specific ID of a character set.

Syntax:

NLS_CHARSET_ID(string)

Parameter:

Examples: Oracle NLS_CHARSET_ID function

The following example returns the character set ID of a character set:

SELECT NLS_CHARSET_ID('ja16euc') 
FROM DUAL; 

Sample Output:

 NLS_CHARSET_ID('JA16EUC')
------------------------- 
                      830

Previous: NLS_CHARSET_DECL_LEN
Next: NLS_CHARSET_NAME