From e22c32ca27e179262c4f03cc742d6148b4204465 Mon Sep 17 00:00:00 2001
From: taytzehao <jtth95@gmail.com>
Date: Sun, 8 Oct 2023 22:41:30 +0800
Subject: [PATCH] add comment

---
 src/sqlparser/src/parser.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/sqlparser/src/parser.rs b/src/sqlparser/src/parser.rs
index 4c0452e365eab..290c37e4c127d 100644
--- a/src/sqlparser/src/parser.rs
+++ b/src/sqlparser/src/parser.rs
@@ -3363,6 +3363,10 @@ impl Parser {
         loop {
             idents.push(self.parse_identifier()?);
 
+            // There are cases where no skip is required as minus could be used
+            // as a subtraction if an object has whitespace from the minus. If 
+            // normal peek_token is used the subsequent minus could be mistaken
+            // to be part of the object rather than being a subtraction.
             match self.peek_token_no_skip() {
                 Some(token_with_location) => match token_with_location.token {
                     Token::Period => {