SQL查詢來更新

Question

我有列

name | salary 
------------- 
A | 5000 
B | 2000 
c | 1000 

另一個表 作品與列

name| work 
--------- 
A | w1 
A | w2 
A | w3 
B | w4 
B | w5 

我想100％的工作，以提高員工的工資和更新此表的員工只有數的作品都大於1. 任何人都可以幫我解決這個問題。我需要一個SQL更新查詢（沒有存儲過程或觸發器或遊標）。

Answer 1

請嘗試使用MERGE語句：

MERGE 
INTO employee 
USING (
     select distinct "name", count(*) over (partition by "name") cnt from works 
     )x 
ON  (employee."name" = x."name") 
WHEN MATCHED THEN 
UPDATE 
SET  salary = salary+(100*case when cnt=1 then 0 else cnt end); 

Answer 2

這裏是正確的查詢

update employee as a set salary = salary + 100 * NVL((
    SELECT count(*) 
    FROM works as b 
    where b.name=a.name 
    group by name 
    having count(*)>1), 0)