可視化SQL級聯樹的工具

Question

有沒有一種工具可以讓您可視化SQL Server 2008級聯樹？我遇到了無法刪除的項目，我希望看到SQL所採用的路徑。

Answer 1

我想這是你所追求的：

http://www.sqlservercentral.com/scripts/foreign+keys/69110/

如果你不想給他們的電子郵件，這裏是代碼：

IF EXISTS (SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].[ShowDeleteTree]') AND OBJECTPROPERTY(id, N'IsProcedure') = 1) 
DROP PROCEDURE [dbo].[ShowDeleteTree] 
GO 

CREATE PROCEDURE dbo.ShowDeleteTree 
    @TableName varchar(128), 
    @PrintDepth int = 9 
AS 

-- print tree of dependencies for any table 
declare 
    @p varchar(128), 
    @c1 varchar(128), 
    @c2 varchar(128), 
    @c3 varchar(128), 
    @c4 varchar(128), 
    @c5 varchar(128), 
    @c6 varchar(128), 
    @c7 varchar(128), 
    @delaction varchar(20), 
    @char9 varchar(10) 


set @p = @TableName 
set @char9 = '-->' 

-- view as text 

-- hierarchy ------------------------------------------------------------- 
set nocount on 
declare @loop int 
declare @dep table(child varchar(100), parent varchar(100), pass int, delaction varchar(20)) 

-- dependency list 
insert into @dep 
select distinct object_name(parent_object_id), object_name(referenced_object_id), 0, delete_referential_action_desc 
from sys.foreign_keys 
where parent_object_id <> referenced_object_id 
order by 1,2 



-- bottom: children that are never parents 
update 
    @dep 
set 
    pass = 1 
where 
    child not in 
     (
      select 
       parent 
      from 
       @dep 
     ) 


-- middle to top: parents where children have been processed 
set @loop = 2 
while @loop < 10 
begin 
    update 
     @dep 
    set 
     pass = @loop 
    where 
     pass = 0 
    and 
     parent in 
      (
       -- select parents where all children have been processed 
       select 
        parent 
       from 
        @dep d1 
       where 
        pass = 0 
       and 
        not exists 
         (select * from @dep d2 where d1.child=d2.parent and d2.pass=0) 
      ) 

    set @loop = @loop + 1 
end 

select parent as 'ImmediateParent', delaction as 'DeleteAction' from @dep where child = @p 
print '' 

print '-- children of' 
print @p 

if exists (select * 
from sys.tables t join sys.triggers tr on t.object_id=tr.parent_id 
where t.name = @p 
and tr.is_instead_of_trigger=1 
and objectproperty(tr.object_id,'ExecIsDeleteTrigger')=1) 
    print 'Has "Instead Of Delete" Trigger so parents cannot cascade delete it. 

' 


--1 
select @c1=min(child) from @dep where parent = @p 
while @c1 is not null 
begin 
    select @delaction = delaction from @dep where child=@c1 and parent=@p 
    if @printdepth >=1 print @char9+@c1+' '+@delaction 
    --2 
    select @c2=min(child) from @dep where parent = @c1 
    while @c2 is not null 
    begin 
     select @delaction = delaction from @dep where child=@c2 and parent=@c1 
     if @printdepth >=2 print @char9+@char9+@c2+' '+@delaction 
     --3 
     select @c3=min(child) from @dep where parent = @c2 
     while @c3 is not null 
     begin 
      select @delaction = delaction from @dep where child=@c3 and parent=@c2 
      if @printdepth >=3 print @char9+@char9+@char9+@c3+' '+@delaction 
      --4 
      select @c4=min(child) from @dep where parent = @c3 
      while @c4 is not null 
      begin 
       select @delaction = delaction from @dep where child=@c4 and parent=@c3 
       if @printdepth >=4 print @char9+@char9+@char9+@char9+@c4+' '+@delaction 
       --5 
       select @c5=min(child) from @dep where parent = @c4 
       while @c5 is not null 
       begin 
        select @delaction = delaction from @dep where child=@c5 and parent=@c4 
        if @printdepth >=5 print @char9+@char9+@char9+@char9+@char9+@c5+' '+@delaction 
        --6 
        select @c6=min(child) from @dep where parent = @c5 
        while @c6 is not null 
        begin 
         select @delaction = delaction from @dep where child=@c6 and parent=@c5 
         if @printdepth >=6 print @char9+@char9+@char9+@char9+@char9+@char9+@c6+' '+@delaction 
         --7 
         select @c7=min(child) from @dep where parent = @c6 
         while @c7 is not null 
         begin 
          select @delaction = delaction from @dep where child=@c7 and parent=@c6 
          if @printdepth >=7 print @char9+@char9+@char9+@char9+@char9+@char9+@char9+@c7+' '+@delaction 
          select @c7=min(child) from @dep where parent = @c6 and child > @c7 
         end 
         --7 
         select @c6=min(child) from @dep where parent = @c5 and child > @c6 
        end 
        --6 
        select @c5=min(child) from @dep where parent = @c4 and child > @c5 
       end 
       --5 
       select @c4=min(child) from @dep where parent = @c3 and child > @c4 
      end 
      --4 
      select @c3=min(child) from @dep where parent = @c2 and child > @c3 
     end 
     --3 
     select @c2=min(child) from @dep where parent = @c1 and child > @c2 
    end 
    --2 
    select @c1=min(child) from @dep where parent = @p and child > @c1 
end 
--1 

return 0 
GO