与条件SQL选择用户在多行验证

Question

我有如下表：

第一列包含Services_ID，第二Users_ID和第三指示，如果用户对服务有效。 我需要确定哪些用户可以在这两项服务与ID 4和5

我写了与MySQL该查询（一次为用户）：

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); 

该查询工作，但，是有写一个更好的技术方法？

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