管理引擎表上的SQL查詢

Question

下面給出的圖片上的標記查詢在SQL服務器中的SQL查詢是什麼？

找到所有的監事（直接和間接）鮑勃

Answer 1

;WITH CTE AS (
SELECT Supervisor 
FROM t 
WHERE Person='Bob' 
UNION ALL 
SELECT tt.Supervisor 
FROM t tt 
INNER JOIN CTE ON CTE.Supervisor = tt.Person 
) 
SELECT * 
FROM CTE 

Test

Answer 2

試試這個：

DECLARE @T TABLE (Person NVARCHAR(30) , Supervisor NVARCHAR(30)); 
INSERT INTO @T VALUES 
('Bob','Alice'),('Mary','Susan'),('Alice','David'),('David','Mary'); 

select T.Supervisor 
from @T T 
Where T.Person = 'Bob' 
union all 
Select TT.Supervisor 
From @T TT inner join @T A 
on A.Supervisor = TT.Person