SQL WITH CTE然後刪除問題

只是有一個SQL語句的奇怪問題。我正在使用WITH語句爲樹結構收集父行和子行。SQL WITH CTE然後刪除問題

然後我想刪除一個家長，只有他們的孩子。

我的代碼如下（在存儲過程）：

DECLARE @AssignmentIds TABLE 
(
    AssignmentIds int 
); 

with DeleteTree(AssignmentID) 
as 
(
    select AssignmentID 
    from Assignment 
    where AssignmentID = @AssignmentID 

    union all 

    select a.AssignmentID 
    from Assignment a 
    join DeleteTree d on a.ParentID = d.AssignmentID 
) 
/* insert results of above with into table var*/ 
insert into @AssignmentIds 
    select AssignmentID from DeleteTree 

/*This select returns the CORRECT Ids!*/ 
/*SELECT * from @AssignmentIds*/ 

/*Delete Roster Info*/ 
delete from [dbo].[Roster] 
where [AssignmentId] in (select AssignmentId from @AssignmentIds) 

/*Delete Assignments*/ 
delete from [dbo].[Assignment] 
where [AssignmentID] in (select AssignmentID from @AssignmentIds)

怪異的一部分是，如果我運行的結果有一個選擇，我得到正確的正確分配ID列表。

但是，當我運行delete語句時，它將刪除assignments表中的所有行，而不是僅刪除with語句中的Ids！

來源

2015-05-16 user1191559

嗨Giorgi，是的，我檢查，並沒有在名單表或分配表上的級聯刪除 - 感謝評論。 – user1191559