SQL where子句子查询

Question

有人可以向我解释为什么我的工作不正常吗？

select distinct campaignid 
from(
select 
day, 
campaignid, 
campaignname, 
sum(campaign_impressions) as impressions, 
sum(installs) as installs, 
sum(revenue) as revenue 
from bi.mobile_united_net t 
where (campaignid in (select TOP 14 distinct campaignid 
          from bi.mobile_united_net      
          where campaignid <> '3600961' 
          group by 1 
          order by sum(campaign_impressions) desc 
          ) 
     or campaignid = '1433407') 

group by 1,2,3 
order by 1,2); 

因为我希望只获得15个广告系列，但获得408个广告系列。

enter image description here

感谢， 陈

Answer 1

这是由1,2,3即day,campaignid,campaignname,（即每一天，你的15个活动的一个发生在）分组，以便你会得到一个行白天和运动的每个组合

为了让只有15行，你需要从你的选择，并通过组对组由“活动，清除“天”，campaignname`只有

select distinct campaignid 
from(
select 
campaignid, 
campaignname, 
sum(campaign_impressions) as impressions, 
sum(installs) as installs, 
sum(revenue) as revenue 
from bi.mobile_united_net t 
where (campaignid in (select TOP 14 distinct campaignid 
          from bi.mobile_united_net      
          where campaignid <> '3600961' 
          group by 1 
          order by sum(campaign_impressions) desc 
          ) 
     or campaignid = '1433407') 

group by campaignid,campaignname  
order by 1,2); 

我还建议使用列名称而不是数字进行分组和排序，它使事情更容易阅读和维护。