Как написать вложенный запрос

Question

У меня есть таблица с именем Options. имеют три поля Caption, OptionID, ParentOptionID. содержит некоторые записи, как:

OptiondID  Caption  ParentOptionID 
     1  Entry   0 
     2  Sale   1 
     3  Sale Invoice 2 
---------------------------------------------- 
I want the result as : 

OptiondID  Caption      ParentOptionID 
     1  Entry       0 
     2  Entry - Sale     1 
     3  Entry - Sale - Sale Invoice 2 
----------------------------------------------- 
Option Caption of its parent option - added in current Options Caption, and it should be nested. 

Это вопрос, который я пробовал:

;with MyRelation as ( 

    -- Anchor member definition 
    select OID, Cast(Caption as Varchar(1000)) as Caption, POID, iid 
    from #tmpOptions as e 

    UNION ALL 

    -- Recursive member definition 
    select e.OID, Cast(e.Caption + '-' + r.Caption as Varchar(1000)) as Caption, e.POID, e.iid 
    from #tmpOptions as e join MyRelation R on e.POID = R.OID 

) 

-- Statement that executes the CTE 
select OID, Caption, POID, iid 
from MyRelation 

Answer 1

Не могли бы вы пытались с ниже запроса

;WITH MyRelation AS ( 
    SELECT OptiondID, convert(varchar(max), Caption) AS Caption, ParentOptionID 
    FROM Options 
    WHERE ParentOptionID = 0 
    UNION ALL 
    SELECT Options.OptiondID, MyRelation.Caption + ' - ' + Options.Caption, Options.ParentOptionID 
    FROM Options 
    INNER JOIN MyRelation ON Options.ParentOptionID = MyRelation.OptiondID 
    WHERE Options.ParentOptionID <> 0 
) 
SELECT * FROM MyRelation