From 91175aff52849591179beee30654cb3da8299ca3 Mon Sep 17 00:00:00 2001
From: celeste0-0sec <celeste0.0sec@gmail.com>
Date: Thu, 20 Nov 2025 07:27:41 -0800
Subject: [PATCH] Fix missing assignment (#3151)

Co-authored-by: Quentin Pradet <quentin.pradet@elastic.co>
(cherry picked from commit fa8fe728e8044ec36710d00c0358eb9d94fdfdbc)
---
 elasticsearch/esql/esql.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/elasticsearch/esql/esql.py b/elasticsearch/esql/esql.py
index 05f4e3e3e..367ec971d 100644
--- a/elasticsearch/esql/esql.py
+++ b/elasticsearch/esql/esql.py
@@ -124,7 +124,7 @@ def _format_id(id: FieldType, allow_patterns: bool = False) -> str:
         if re.fullmatch(r"[a-zA-Z_@][a-zA-Z0-9_\.]*", s):
             return s
         # this identifier needs to be escaped
-        s.replace("`", "``")
+        s = s.replace("`", "``")
         return f"`{s}`"
 
     @staticmethod