如何查询出当前数据表主健是否作为其他数据表的外健

[mydreamf]

急！！如题！！高手指教！！

[-狙击手-]

create table ta(id int PRIMARY KEY)

go
create table tb(id int primary key ,col int REFERENCES ta(id))
go

---1

sp_fkeys 'ta'
----2
select * from sysforeignkeys
/*
PKTABLE_QUALIFIER                                                                                                                PKTABLE_OWNER                                                                                                                    PKTABLE_NAME                                                                                                                     PKCOLUMN_NAME                                                                                                                    FKTABLE_QUALIFIER                                                                                                                FKTABLE_OWNER                                                                                                                    FKTABLE_NAME                                                                                                                     FKCOLUMN_NAME                                                                                                                    KEY_SEQ UPDATE_RULE DELETE_RULE FK_NAME                                                                                                                          PK_NAME                                                                                                                          DEFERRABILITY 
-------------------------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------------------------- ------- ----------- ----------- -------------------------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------------------------- ------------- 
CSDN_TEST                                                                                                                        dbo                                                                                                                              ta                                                                                                                               id                                                                                                                               CSDN_TEST                                                                                                                        dbo                                                                                                                              tb                                                                                                                               col                                                                                                                              1       1           1           FK__tb__col__417BF6D5                                                                                                            PK__ta__3E9F8A2A                                                                                                                 7

constid     fkeyid      rkeyid      fkey   rkey   keyno  
----------- ----------- ----------- ------ ------ ------ 
1098643157  1066643043  1034642929  2      1      1

（所影响的行数为 1 行）

*/

drop table tb,ta

[wzy_love_sly]

1

[tim_spac]

顶一下

[liangCK]

--表的外键约束

SELECT 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)
	,主键表ID=b.rkeyid
	,主键表名=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)
	,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'


--查询一个表的所有外键:

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)='titles'

[JL99000]

我也会了
哈哈
exec sp_fkeys '表名'

[w2jc]

学习一下