Question

我有删除Tsql的问题，当它删除关联记录时，有人可以帮我解决问题吗

ALTER PROCEDURE [dbo].[Delete_Resource]
@ResID INT,

@UserID uniqueidentifier  

AS
BEGIN

    DELETE FROM [ideaPark_DB].[dbo].[Topics_Resources]
      WHERE [ideaPark_DB].[dbo].[Topics_Resources].ResourceID =  @ResID



    DELETE FROM [ideaPark_DB].[dbo].[Likes]
      WHERE [ideaPark_DB].[dbo].[Likes].resourceID = @ResID

     declare @BookmarkID  INT;
     SET  @BookmarkID  =  (SELECT [ideaPark_DB].[dbo].[Bookmarks].id  FROM [ideaPark_DB].[dbo].[Bookmarks] WHERE [ideaPark_DB].[dbo].[Bookmarks].resourceID = @ResID and Bookmarks.userID = @UserID)
     DELETE FROM [ideaPark_DB].[dbo].[Bookmarks]
      WHERE [ideaPark_DB].[dbo].[Bookmarks].resourceID = @ResID

      DELETE FROM [ideaPark_DB].[dbo].Bookmarks_Groups 
      WHERE Bookmarks_Groups.bookmarkID = @BookmarkID

     delete FROM [ideaPark_DB].[dbo].[Resources_Relationship]
      WHERE [ideaPark_DB].[dbo].[Resources_Relationship].fk_parent = @ResID


    DELETE FROM [ideaPark_DB].[dbo].[Skills_Resources]
      WHERE [ideaPark_DB].[dbo].[Skills_Resources].ResourceID = @ResID




     DELETE FROM [ideaPark_DB].[dbo].[Resources]
      WHERE [ideaPark_DB].[dbo].[Resources].Id  = @ResID 

END

错误

发生严重错误。 DELETE语句与REFERENCE约束“FK_Resources_Relationship_Resources1”冲突。冲突发生在数据库“ideaPark_DB”，表“dbo.Resources_Relationship”，列'fk_child'中。该语句已终止。 -

Answer 1

在最终删除Resources

之前添加以下内容

delete FROM [ideaPark_DB].[dbo].[Resources_Relationship]
WHERE [ideaPark_DB].[dbo].[Resources_Relationship].fk_chid = @ResID

你的Resources_Relationship表有两个FK回到Resources表，你只处理其中一个。

Answer 2

我看到两个问题：

第一个：

DELETE FROM [ideaPark_DB].[dbo].[Bookmarks]
WHERE [ideaPark_DB].[dbo].[Bookmarks].resourceID = @ResID

DELETE FROM [ideaPark_DB].[dbo].Bookmarks_Groups 
WHERE Bookmarks_Groups.bookmarkID = @BookmarkID

我会更改这些删除的顺序，因为bookmark_groups是书签和组之间的中间表。

第二个：

删除后：

DELETE FROM [ideaPark_DB].[dbo].[Resources_Relationship]
WHERE [ideaPark_DB].[dbo].[Resources_Relationship].fk_parent = @ResID

您必须添加以下内容：

DELETE FROM [ideaPark_DB].[dbo].[Resources_Relationship]
WHERE [ideaPark_DB].[dbo].[Resources_Relationship].fk_child = @ResID

如何应用级联删除

2 个答案: