SQL where子句子查詢

Question

有人可以向我解釋爲什麼我的工作不正常嗎？

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); 

因爲我希望只獲得15個廣告系列，但獲得408個廣告系列。

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感謝， 陳

Answer 1

這是由1,2,3即day,campaignid,campaignname,（即每一天，你的15個活動的一個發生在）分組，以便你會得到一個行白天和運動的每個組合

爲了讓只有15行，你需要從你的選擇，並通過組對組由「活動，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); 

我還建議使用列名稱而不是數字進行分組和排序，它使事情更容易閱讀和維護。