Method invoke_with_args

datafusion/spark/src/function/string/concat.rs:69–71

(&self, args: ScalarFunctionArgs)

    }

    fn invoke_with_args(&self, args: ScalarFunctionArgs) -> Result<ColumnarValue> {
        spark_concat(args)
    }

    fn coerce_types(&self, arg_types: &[DataType]) -> Result<Vec<DataType>> {
        // Accept any string types, including zero arguments