$sql.metaData.getExtraNameCharacters

Retrieves all the "extra" characters that can be used in unquoted identifier names (those beyond a-z, A-Z, 0-9 and _).
Syntax
    $sql.metaData.getExtraNameCharacters{jdbcProfileName}
DocumentationRetrieves all the "extra" characters that can be used in unquoted identifier names (those beyond a-z, A-Z, 0-9 and _).:

    Paramter:
      Requieres one parameter, this is your JDBC profile name.
    Returns:
      the string containing the extra characters
    Throws:
      SQLException - if a database access error occurs
Examples
GroupSQL
Minimum required transaction-mode:NONE
Required scripting permission of the developerPERMISSION_FL_BASIC
Minimum parameters1
Maximum parameters 1