Method invoke_with_args

datafusion/functions/src/unicode/right.rs:90–102

Returns right n characters in the string, or when n is negative, returns all but first |n| characters. right('abcde', 2) = 'de' right('abcde', -2) = 'cde' The implementation uses UTF-8 code points as characters

(&self, args: ScalarFunctionArgs)

    /// right('abcde', -2) = 'cde'
    /// The implementation uses UTF-8 code points as characters
    fn invoke_with_args(&self, args: ScalarFunctionArgs) -> Result<ColumnarValue> {
        let args = &args.args;
        match args[0].data_type() {
            DataType::Utf8 | DataType::Utf8View | DataType::LargeUtf8 => {
                make_scalar_function(general_left_right::<RightSlicer>, vec![])(args)
            }
            other => exec_err!(
                "Unsupported data type {other:?} for function {},\
                expected Utf8View, Utf8 or LargeUtf8.",
                self.name()
            ),
        }
    }

    fn documentation(&self) -> Option<&Documentation> {
        self.doc()