查询数据库中的主键和外键

SELECT 主键表名称=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) like '%%' --主键表名