sql server删除外键约束
create table test1(id int primary key not null,value int) insert test1 select 1,2 go --从表 create table test2(id int references test1(id),value int) go --第一步:找出test2表上的外键约束名字 --2000 exec sp_helpconstraint 'test2' --可以
create table test1(id int primary key not null,value int)
insert test1 select 1,2
go
--从表
create table test2(id int references test1(id),value int)
go
--第一步:找出test2表上的外键约束名字
--2000
exec sp_helpconstraint 'test2'
--可以在constraint_name 属性中找到外键约束名字
--2005
select name
from sys.foreign_key_columns f join sys.objects o on f.constraint_object_id=o.object_id
where f.parent_object_id=object_id('test2')
/*
name
---------------------------------
FK__test2__id__08EA5793*/
--第二步:删除外键约束
alter table test2 drop constraint FK__test2__id__08EA5793
--第三步:检查表上是否还有外键约束
--只要使用第一步里面的查找语句即可

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