diff --git a/datafusion-examples/examples/testing_window_bug_will_delete.rs b/datafusion-examples/examples/testing_window_bug_will_delete.rs
deleted file mode 100644
index 04e381e0aa94..000000000000
--- a/datafusion-examples/examples/testing_window_bug_will_delete.rs
+++ /dev/null
@@ -1,40 +0,0 @@
-use arrow::array::{Int32Array, RecordBatch};
-use arrow_schema::{DataType, Field, Schema};
-use datafusion::datasource::MemTable;
-use datafusion::error::Result;
-use datafusion::prelude::SessionContext;
-use datafusion_expr::expr::WindowFunction;
-use datafusion_expr::{col, BuiltInWindowFunction, Expr, WindowFunctionDefinition};
-use std::sync::Arc;
-
-#[tokio::main]
-async fn main() -> Result<()> {
-    let schema = Schema::new(vec![Field::new("a", DataType::Int32, true)]);
-
-    let batch = RecordBatch::try_new(
-        Arc::new(schema.clone()),
-        vec![Arc::new(Int32Array::from(vec![5, 4, 3, 2, 1]))],
-    )?;
-
-    let ctx = SessionContext::new();
-
-    let provider = MemTable::try_new(Arc::new(schema), vec![vec![batch]])?;
-    ctx.register_table("t", Arc::new(provider))?;
-
-    let df = ctx.table("t").await?;
-
-    let func = Expr::WindowFunction(WindowFunction::new(
-        WindowFunctionDefinition::BuiltInWindowFunction(BuiltInWindowFunction::RowNumber),
-        vec![],
-    ))
-    .alias("row_num");
-
-    df.clone()
-        .select(vec![col("a"), func.clone()])?
-        .show()
-        .await?;
-
-    df.with_column("r", func)?.show().await?;
-
-    Ok(())
-}