通過在remuving一個SQL查詢中使用組複製

Question

我有這樣的查詢：

select 
o.Name, 
o.Family, 
o.phone, 
o.OBJECTID, 
o.owner_id, 
l.Licence_Contex, 
l.Licence_title, 
l.Id 
from 
[dbo].[owner_licence] as l,[dbo].[OWNER] as o 
where o.[owner_id] =l.[Owner_ID] 
    And l.Id 
    NOT IN 
     (select l.id from [dbo].[owner_licence] as l,[dbo].[OWNER] as o 
     where o.[owner_id] =l.[Owner_ID] 
     And (l.Registration_date1 > DATEADD(year, -1, GetDate()) 
     or l.[Registration_date2]> DATEADD(year, -1, GetDate()) 
     or l.[Registration_date3]> DATEADD(year, -1, GetDate()) 
     or l.[Registration_date4] > DATEADD(year, -1, GetDate()) 
     or l.[Registration_date5]> DATEADD(year, -1, GetDate()))) 

結果是一些如何這樣

john smith 09305689220 1080199884 1 licencetitle_1 licencecontex_1 10 
John Smith 09305689220 1080199884 1 licencetitle_2 licencecontex3 13 

正如你可以看到這兩個行是爲同一個人，我想這些重複的人聚合成一行..有沒有辦法做到這一點？我useg group by o.owner_id也是截然不同的，但他們不工作..

Answer 1

子查詢將許可證限制爲每個所有者最多（合格）ID最多的那個許可證，因此您應該只爲每個所有者獲得1個許可證（因此爲1行）。

select 
o.Name, 
o.Family, 
o.phone, 
o.OBJECTID, 
o.owner_id, 
l.Licence_Contex, 
l.Licence_title, 
l.Id 
from 
[dbo].[owner_licence] as l 
join [dbo].[OWNER] as o on o.[owner_id] = l.[Owner_ID] 
join (select 
    max(ol.id) max_lid, 
    ol.owner_id 
from 
    owner_licence ol 
where ol.id not in (select l.id from [dbo].[owner_licence] as l,[dbo].[OWNER] as o 
     where o.[owner_id] =l.[Owner_ID] 
     And (l.Registration_date1 > DATEADD(year, -1, GetDate()) 
     or l.[Registration_date2]> DATEADD(year, -1, GetDate()) 
     or l.[Registration_date3]> DATEADD(year, -1, GetDate()) 
     or l.[Registration_date4] > DATEADD(year, -1, GetDate()) 
     or l.[Registration_date5]> DATEADD(year, -1, GetDate()))) 
group by 
    ol.owner_id) t1 on t1.owner_id = o.owner_id AND t1.max_lid = l.id 

Answer 2

如果你想這就像你一排將需要從SElect子句中刪除最後一列。

使用分組按分號

Answer 3

您有一個複雜的查詢。這裏是一個方式做你想要什麼：

with t as (
     <your query here> 
    ) 
select Name, Family, phone, OBJECTID, owner_id, Licence_Contex, Licence_title, 
     max(Id) as id 
from t 
group by Name, Family, phone, OBJECTID, owner_id, Licence_Contex, Licence_title; 

你需要group by所有列除了有重複的一個。爲此，您需要選擇一個值。該查詢選擇最大值。

Distinct不起作用，因爲它適用於select中的所有行，包括在不同行上具有不同值的id。