如何获得当前数据库对象依赖关系_MySQL

具体示例的源代码，请大家参考下文：

create function udf_GenLevelPath()   
returns @v_Result table (LevelPath int,OName sysname)   
/****************************************************************/   
/* 功能描述：按照依赖关系，列出数据库对象 */   
/* 输入参数：无 */   
/* 输出参数：按照依赖关系排列的数据库对象表，无依赖在前 */   
/* 编写： anna*/   
/* 时间：2007-12-12 */   
/****************************************************************/   
as   
begin   
declare @vt_ObjDepPath table (LevelPath int,OName sysname null)   
declare @vt_Temp1 table (OName sysname null)   
declare @vt_Temp2 table (OName sysname null)   
--依赖的级别，值越小依赖性越强   
declare @vi_LevelPath int       
set @vi_LevelPath = 1   
--得到所有对象，不包括系统对象           
insert into @vt_ObjDepPath(LevelPath,OName)   
select @vi_LevelPath,o.name   
from sysobjects o   
where xtype not in ('S','X')   

--得到依赖对象的名称   
insert into @vt_Temp1(OName)   
select distinct object_name(sysdepends.depid)     
from sysdepends,@vt_ObjDepPath p   
where sysdepends.id  sysdepends.depid   
and p.OName = object_name(sysdepends.id)   

--循环处理：由对象而得到其依赖对象   
while (select count(*) from @vt_Temp1) > 0   
begin   
set @vi_LevelPath = @vi_LevelPath + 1   

update @vt_ObjDepPath   
set LevelPath = @vi_LevelPath   
where OName in (select OName from @vt_Temp1)   
and LevelPath = @vi_LevelPath - 1   

delete from @vt_Temp2   

insert into @vt_Temp2   
select * from @vt_Temp1   

delete from @vt_Temp1   

insert into @vt_Temp1(OName)   
select distinct object_name(sysdepends.depid)     
from sysdepends,@vt_Temp2 t2   
where t2.OName = object_name(sysdepends.id)   
and sysdepends.id  sysdepends.depid  

end       
select @vi_LevelPath = max(LevelPath) from @vt_ObjDepPath   

--修改没有依赖对象的对象级别为最大   
update @vt_ObjDepPath   
set LevelPath = @vi_LevelPath + 1   
where OName not in (select distinct   
object_name(sysdepends.id) from sysdepends)   
and LevelPath = 1   

insert into @v_Result   
select * from @vt_ObjDepPath order by LevelPath desc   
return   
end   
go   

--调用方法   
select * from dbo.udf_GenLevelPath()   
go