订购时，行会从结果中消失

Question

我必须执行以下查询：

select users.Name, users.ProfilePictureUrl, commons.Name, provinces.Name, GetAge(users.Birthday) as Age, users.LastOnline,
   search_scores.SocialAccountPresent, search_scores.UnansweredMessages, search_scores.WeightedRecentMessages
from users  
inner join search_scores on users.ID = search_scores.UserID  
inner join commons on commons.ID = users.CommonID  
inner join provinces on provinces.ID = commons.ProvinceID  
where (ProfileValid = 1)
order by SocialAccountPresent desc, UnansweredMessages asc, WeightedRecentMessages asc

但是，结果集为空，但如果我包含order子句，则仅。当省略order-by时，所有结果都正确显示...结果集中有两行，对于所有这些行，SocialAccountPresent = 1，UnansweredMessages = 0和WeightedRecentMessages = 0.。

我很困惑......建议？