From ce2752bad663c3543a8a93a936cff39d5711c9bd Mon Sep 17 00:00:00 2001
From: Bruce Ritchie <bruce.ritchie@veeva.com>
Date: Mon, 12 Feb 2024 09:23:56 -0500
Subject: [PATCH] Update datafusion/physical-expr/src/datetime_expressions.rs

Co-authored-by: Andrew Lamb <andrew@nerdnetworks.org>
---
 datafusion/physical-expr/src/datetime_expressions.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/datafusion/physical-expr/src/datetime_expressions.rs b/datafusion/physical-expr/src/datetime_expressions.rs
index bc8f135397f2..aab4997807cd 100644
--- a/datafusion/physical-expr/src/datetime_expressions.rs
+++ b/datafusion/physical-expr/src/datetime_expressions.rs
@@ -627,6 +627,7 @@ fn _build_format_options<'a>(
     Ok(format_options)
 }
 
+/// Special version when arg[1] is a scalar
 fn _to_char_scalar(args: &[ArrayRef]) -> Result<ColumnarValue> {
     if &DataType::Utf8 != args[1].data_type() {
         return exec_err!(