SQLServer根据表明查询表的外键关系

SELECT 主键列ID=b.rkey   
  ,主键列名=(SELECT name FROM syscolumns WHERE colid=b.rkey AND id=b.rkeyid)   
    ,外键表ID=b.fkeyid   
    ,外键表名称=object_name(b.fkeyid)   
    ,外键列ID=b.fkey   
    ,外键列名=(SELECT name FROM syscolumns WHERE colid=b.fkey AND id=b.fkeyid)   
    ,级联更新=ObjectProperty(a.id,'CnstIsUpdateCascade')   
    ,级联删除=ObjectProperty(a.id,'CnstIsDeleteCascade')   
FROM sysobjects a   
    join sysforeignkeys b on a.id=b.constid   
    join sysobjects c on a.parent_obj=c.id   
where a.xtype='f' AND c.xtype='U'   
    and object_name(b.rkeyid)='TABLE_PMD_TPP_TRAITS'