id, history_code, model, model_version, role, COALESCE(content_type, '') content_type, content, COALESCE(duration, '') duration, user_id, COALESCE(robot_code, '') robot_code, del_flag, create_time, update_time SELECT FROM ai_chat AND user_id = #{user_id} AND history_code = #{history_code} AND del_flag = #{del_flag} ORDER BY create_time DESC, id DESC