Mysql无法正常使用和

Question

我有SQL语句：

SELECT `id`, `un`, `last_active` 
FROM `users` 
WHERE (`company_id` = :company_id 
       AND `un` LIKE :un 
       AND `id` != :id 
       AND `id` != :id) 
ORDER BY id DESC 
LIMIT 1

但这不能正常工作，因为我怀疑重复组件id未正确测试。

那么我怎样才能拥有id!=1 AND id!=7

的sql语句