T-SQL语句显示级联依赖关系 .

if exists(select name from sysobjects where name='sp_dependss' and xtype='p')

drop procedure sp_dependss

go

create procedure sp_dependss --- 1996/08/09 16:51

@objname nvarchar(776) /* the object we want to check */

as

declare @objid int /* the id of the object we want */

declare @found_some bit /* flag for dependencies found */

declare @dbname sysname

/*

** Make sure the @objname is local to the current database.

*/

select @dbname = parsename(@objname,3)

if @dbname is not null and @dbname <> db_name()

begin

raiserror(15250,-1,-1)

return (1)

end

/*

** See if @objname exists.

*/

select @objid = object_id(@objname)

if @objid is null

begin

select @dbname = db_name()

raiserror(15009,-1,-1,@objname,@dbname)

return (1)

end

/*

** Initialize @found_some to indicate that we haven't seen any dependencies.

*/

select @found_some = 0

/*

** Now check for things that depend on the object.

*/

if exists (select *

from sysdepends

where depid = @objid)

select distinct 'name' = (s.name + '.' + o.name),d.depid,d.id,

type = substring(v.name, 5, 16) into #a

from sysobjects o, master.dbo.spt_values v, sysdepends d,

sysusers s

where o.id = d.id

and o.xtype = substring(v.name,1,2) collate database_default and v.type = 'O9T'

and d.depid = @objid

and o.uid = s.uid

and deptype < 2

begin

while exists(select distinct 'name' = (s.name + '.' + o.name),d.depid,d.id,

type = substring(v.name, 5, 16)

from sysobjects o, master.dbo.spt_values v, sysdepends d,

sysusers s

where o.id = d.id

and o.xtype = substring(v.name,1,2) collate database_default and v.type = 'O9T'

and o.uid = s.uid

and deptype < 2

and d.depid in(select [id] from #a)

and d.id not in (select [id] from #a))

begin

insert into #a(name,depid,id,type) select distinct 'name' = (s.name + '.' + o.name),d.depid,d.id,

type = substring(v.name, 5, 16)

from sysobjects o, master.dbo.spt_values v, sysdepends d,

sysusers s

where o.id = d.id

and o.xtype = substring(v.name,1,2) collate database_default and v.type = 'O9T'

and o.uid = s.uid

and deptype < 2

and d.depid in(select [id] from #a)

and d.id not in (select [id] from #a)

end

select @found_some = 1

select name,type from #a

end

/*

** Did we find anything in sysdepends?

*/

if @found_some = 0

raiserror(15461,-1,-1)

set nocount off

return (0) -- sp_depends

GO

print '1111111111111111111111111测试例子一111111111111111111111111111111111111'

exec sp_depends 'sp_dropdevice'

print '1111111111111111111111111111111111111111111111111111111111111'

exec sp_dependss 'sp_dropdevice'

print '1111111111111111111111111111111111111111111111111111111111111'

print '22222222222222222222222222测试例子二22222222222222222222222222222222222'

exec sp_depends 'syscomments'

print '2222222222222222222222222222222222222222222222222222222222222'

exec sp_dependss 'syscomments'

print '2222222222222222222222222222222222222222222222222222222222222'

--作者：maizc ,珠海科干院05级accp2

--本人不才，只能把系统的sp_depends存储过程修改了一下