如何获取SQLSERVER所有表的外键关系参数

SELECT 主表名=object_name(b.rkeyid),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' 

要看指定表的话，就用下面的代码：

SELECT 主键列ID=b.rkey,'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)='tb'

查主键：sp_pkeys '表名'

查外健：sp_fkeys '表名'

（编辑：李大同）

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