是否有類似於聯合的聯合的句法快捷方式？

Question

我試圖做的是：

select 
A.Fuzz 
,A.Fizz 
,B.Whiz 
from A 
left outer join B 
on A.Fuzzy B=Wuzzy 

要更換：

select 
A.Fuzz 
,A.Fizz 
,B.Whiz 
from A 
left outer join B 
on A.Fuzzy B=Wuzzy 
UNION ALL 
select 
B.wuzz 
,A.Fizz 
,B.Whiz 
from A 
left outer join B 
on A.Fuzzy B=Wuzzy 

Answer 1

可能這是一件「接近」你以爲（MSSQL上做）什麼？請在每一個問題後的樣本數據，預期效果等

CREATE TABLE A (ID INT, DESC_A VARCHAR(10)); 
INSERT INTO A VALUES (1,'A'); 
INSERT INTO A VALUES (2,'B'); 

CREATE TABLE B (ID INT, DESC_B VARCHAR(10)); 
INSERT INTO B VALUES (2,'Z'); 
INSERT INTO B VALUES (3,'Y'); 

SELECT COALESCE(A.ID, B.ID) AS ID 
, A.DESC_A 
, B.DESC_B 
FROM A 
FULL JOIN B ON A.ID = B.ID 

輸出：

ID DESC_A DESC_B 
1 A NULL 
2 B Z 
3 NULL Y