將多個表中的多個列添加到一列中

Question

我有兩個具有相同列名的表我必須爲兩個表上的某些特定條件添加oprId列值。

表1

something oprId 

abc   1 
qwe   2 

表2

something oprId 

abc   2 
qwe   5 

結果應該是

oprId 
3 
7 

Answer 1

declare @T1 table (something varchar(3), oprId int) 
declare @T2 table (something varchar(3), oprId int) 

insert into @T1 values ('abc', 1),('qwe', 2) 
insert into @T2 values ('abc', 2),('qwe', 5) 

select T1.oprId+T2.oprId as oprId 
from @T1 as T1 
    inner join @T2 as T2 
    on T1.something = T2.something 

結果：

oprId 
------ 
3 
7 

Answer 2

SELECT ISNULL(A.something,B.something) Something, 
     ISNULL(A.oprId,0)ÍSNULL(B.oprId,0) oprId 
FROM Table1 A 
FULL JOIN Table2 B 
ON A.something = B.something