diff --git a/datafusion/functions-window/src/row_number.rs b/datafusion/functions-window/src/row_number.rs
index aea3d4a59e028..43d2796ad7dcf 100644
--- a/datafusion/functions-window/src/row_number.rs
+++ b/datafusion/functions-window/src/row_number.rs
@@ -52,13 +52,13 @@ pub fn row_number_udwf() -> std::sync::Arc<datafusion_expr::WindowUDF> {
 
 /// row_number expression
 #[derive(Debug)]
-struct RowNumber {
+pub struct RowNumber {
     signature: Signature,
 }
 
 impl RowNumber {
     /// Create a new `row_number` function
-    fn new() -> Self {
+    pub fn new() -> Self {
         Self {
             signature: Signature::any(0, Volatility::Immutable),
         }