Fix reserved keyword issue

Author: Peng Ren

README.md

@@ -230,7 +230,7 @@ Parameters are substituted into the MongoDB filter during execution, providing p
 - **Array access**: `items[0].name`, `orders[1].total`
 - **Complex queries**: `WHERE customer.profile.age > 18 AND orders[0].status = 'paid'`
 
-> **Note**: Avoid SQL reserved words (`user`, `data`, `value`, `count`, etc.) as unquoted field names. Use alternatives or bracket notation for arrays.
+> **Note**: Avoid SQL reserved words (`user`, `data`, `value`, `count`, etc.) as unquoted field names. Use alternatives names, or wrap them in double quotes if you must use them.
 
 ### Sorting and Limiting
 

pymongosql/sql/handler.py

@@ -62,6 +62,8 @@ def normalize_field_path(path: str) -> str:
         s = re.sub(r"\[\s*['\"]([^'\"]+)['\"]\s*\]", r".\1", s)
         # Convert numeric bracket indexes [0] -> .0
         s = re.sub(r"\[\s*(\d+)\s*\]", r".\1", s)
+        # Unquote quoted identifiers in dot notation (e.g., "date" -> date)
+        s = re.sub(r'"([^"]+)"', r"\1", s)
         # Collapse multiple dots and strip leading/trailing dots
         s = re.sub(r"\.{2,}", ".", s).strip(".")
         return s