缺少更新条件

                    } else {                        // 如果缺少复合主键数据则不执行                        throw new Exception('miss complex primary data');                    }                    unset($data[$field]);                }            }            if (!isset($where)) {                // 如果没有任何更新条件则不执行                throw new Exception('miss update condition');            } else {                $options['where']['AND'] = $where;            }        } elseif (!isset($key) && is_string($pk) && isset($options['where']['AND'][$pk])) {            $key = $this->getCacheKey($options['where']['AND'][$pk], $options, $this->bind);        }        // 生成UPDATE SQL语句        $sql = $this->builder->update($data, $options);