Remove comments from generated SQL queries

routes/sql_explorer.py

@@ -216,7 +216,12 @@ Return ONLY the SQL query, without any explanation or surrounding text/markdown.
         if generated_sql.endswith("```"):
             generated_sql = generated_sql[:-3]
 
-        return generated_sql.strip(), None
+        # Remove leading SQL comment lines
+        sql_lines = generated_sql.strip().splitlines()
+        filtered_lines = [line for line in sql_lines if not line.strip().startswith('--')]
+        final_sql = "\n".join(filtered_lines).strip()
+
+        return final_sql, None
 
     except requests.exceptions.RequestException as e:
         current_app.logger.error(f"Gemini API request error: {e}")