2

我正在尝试将唯一值从视图中插入到表中。我有一个如下表：“fromView”在护照中没有唯一约束

id  | passport | name | surname | address 
1      44543     John    Smith     xxxxx
2      10001     Mike    Thomps    avasfa
3      10001     Mike    Thomps    avasfa
4      10001     Mike    Thomps    avasfa
5      14221     Robert  Martinez  lkjij3

我的“toTable”具有相同的数据结构，但在护照列中具有唯一约束。

我的插入查询是这样的：

INSERT into toTable (id, passport, name, surname, address) 
SELECT (id, passport, name, surname, address) 
FROM fromView a 
WHERE passport IS NOT NULL AND NOT EXISTS (SELECT * 
                                           FROM toTable b
                                           WHERE b.passport = a.passport)

但这给了我以下错误：

无法在具有唯一索引“toTable_Passport_Unique”的对象“toTable”中插入重复的键行。

所以，我不知道如何在我的表中插入唯一值。提前致谢

4

4 回答 4

5

您可以通过运行以下查询来获取包含多个条目的所有护照的列表：

Select Passport, Count (*) NumEntries
From  fromTable
Group by Passport
Having Count (*) > 1

然后你必须决定如何处理这些重复的行。运行以下查询以查看这些重复项的完整行：

Select *
From  fromTable
Where Passport In
(
    Select Passport, Count (*) NumEntries
    From  fromTable
    Group by Passport
    Having Count (*) > 1
)
Order by Passport

假设您决定使用为每本护照插入的最新行（意味着 Id 将是最高的），此查询将为您提供所需的数据。

Select T1.*
From  fromTable T1
Where Id In
(
    Select Max (Id) Id
    From  fromTable
    Group by Passport
)

您可以使用插入

INSERT into toTable (id, passport, name, surname, address) 
Select T1.*
From  fromTable T1
Where Id In
(
    Select Max (Id) Id
    From  fromTable
    Group by Passport
)
于 2011-09-29T13:08:04.457 回答
2 
insert into toTable (id, passport, name, surname, address)
select id, passport, name, surname, address
from (
      select *,
             row_number() over(partition by passport order by id) as rn
      from fromTable
     ) as T
where rn = 1
于 2011-09-29T13:11:45.393 回答
0 
insert into toTable (id, name, surname, addr, passport)
  select
    testA1.id, testA1.name, testA1.surname, testA1.addr, testA1.passport 
  from 
    fromTable as testA1 right join (select min(id) AS distinctID, passport from fromTable group by passport) as testA2 on 
    testA2.distinctID = testA1.id
于 2011-09-29T13:36:54.443 回答
0

如果我们可以假设对于相同的passport，我们将拥有相同name的surname、 和address，并且我们只想要最新的（最高的）id然后尝试，

INSERT INTO toTable (id, passport, name, surname, address)
SELECT max(id), passport, name, surname, address
FROM fromTable
--optional WHERE clause in case there's already data in toTable:
WHERE passport NOT IN (SELECT to.passport from toTable [to])
GROUP BY passport, name, surname, address
于 2011-09-29T13:11:18.433 回答