fix(CI/Codestyle): Final fixes to backtick check (#21361)

apps/codestyle/codestyle-sql.py

@@ -209,8 +209,10 @@ def backtick_check(file: io, file_path: str) -> None:
 
     # Find SQL clauses
     pattern = re.compile(
-        r'\b(SELECT|FROM|JOIN|WHERE|GROUP BY|ORDER BY|DELETE FROM|UPDATE|INSERT INTO|SET|REPLACE|REPLACE INTO)\s+([^;]+)', 
-        re.IGNORECASE)
+        r'\b(SELECT|FROM|JOIN|WHERE|GROUP BY|ORDER BY|DELETE FROM|UPDATE|INSERT INTO|SET|REPLACE|REPLACE INTO)\s+(.*?)(?=;$|(?=\b(?:WHERE|SET|VALUES)\b)|$)',  
+        re.IGNORECASE | re.DOTALL
+    )
+
 
     # Make sure to ignore values enclosed in single- and doublequotes
     quote_pattern = re.compile(r"'(?:\\'|[^'])*'|\"(?:\\\"|[^\"])*\"")
@@ -219,17 +221,15 @@ def backtick_check(file: io, file_path: str) -> None:
         # Ignore comments
         if line.startswith('--'):
             continue
-        
-        # Ignore SET variables with multiple lines
-        if line.startswith('@'):
-            continue
 
         # Sanitize single- and doublequotes to prevent false positives
         sanitized_line = quote_pattern.sub('', line)
         matches = pattern.findall(sanitized_line)
         
         for clause, content in matches:
-            words = re.findall(r'\b[a-zA-Z_][a-zA-Z0-9_]*\b', content)
+            # Find all words and exclude @variables
+            words = re.findall(r'\b(?<!@)([a-zA-Z_][a-zA-Z0-9_]*)\b', content)
+
             for word in words:
                 # Skip SQL keywords
                 if word.upper() in {"SELECT", "FROM", "JOIN", "WHERE", "GROUP", "BY", "ORDER", 
@@ -237,6 +237,7 @@ def backtick_check(file: io, file_path: str) -> None:
                                     "IN", "OR", "REPLACE"}:
                     continue
 
+                # Make sure the word is enclosed in backticks
                 if not re.search(rf'`{re.escape(word)}`', content):
                     print(f"Missing backticks around ({word}). {file_path} at line {line_number}")
                     check_failed = True