甲骨文更新表中的同文行

Question

我有一個表叫用戶提供下列：

Name, Location, Active (all varchars). 
John Berlin OK 
Danny London OK 
Robert NY  OK 
John Berlin OK 
Danny Berlin OK 

我想更新Active列NOK對於多次出現的（兩個，三個或x更多用戶時間） - 他們有相同的名稱和位置（在表中相同的行）像這樣：

John Berlin NOK 
    Danny London OK 
    Robert NY  OK 
    John Berlin NOK 
    Danny Berlin OK 

我該怎麼做？ 謝謝！

Answer 1

在Oracle中，您可以使用：

UPDATE your_table 
    SET active = 'NOK' 
WHERE (name, location) IN (SELECT name, location 
           FROM your_table 
          GROUP BY name, location 
          HAVING COUNT(*) > 1) 

Answer 2

你需要做的是這樣的：

插入重複的值到一個#temp表

select t.Name, t.Location 
into #test 
from tablename t 
group by t.Name, t.Location 
having count(t.Name) > 1 

進行更新

update tablename 
set Active = 'NOK' 
from tablename t 
inner join #test t2 on t.Name = t2.Name and t.Location = t2.Location 

---

或者一步到位：

update tablename 
set Active = 'NOK' 
from tablename t 
inner join (select t.Name, t.Location 
      from tablename t 
      group by t.Name, t.Location 
      having count(t.Name) > 1) t2 on t.Name = t2.Name and t.Location = t2.Location