SQL选择多行验证条件的用户

Question

我有下表：

第一列包含Services_ID，第二列包含Users_ID，第三列表示用户是否已启用该服务。 我需要确定（用户一次）允许哪些用户使用ID 4和5的两种服务。

我用Mysql写了那个查询：

SELECT DISTINCT User 
  FROM tablexxx
 WHERE Service IN (4, 5)
   AND User NOT IN (SELECT User
                      FROM tablexxx
                     WHERE Service IN (4, 5)
                       AND Active = FALSE);

该查询有效，但有没有更好的技术方法来编写它？

正确的结果是：

Answer 1

select user
from your_table
where service in (4,5)
and active = TRUE
group by user
having count(distinct service) = 2

或

select user
from your_table
group by user
having sum(active = TRUE and service = 4) > 0
   and sum(active = TRUE and service = 5) > 0