create table score
(
id int identity(1,1) not null,
kcdh varchar(10)references subject(kcdh) not null,
cj varchar(10) not null
)create table subject
(kcdh varchar(10) primary key not null,
kcm varchar(30) not null,
xs int not null,
xf int not null)请问这2个表中的KCDH字段如何修改?
谢谢!
(
id int identity(1,1) not null,
kcdh varchar(10)references subject(kcdh) not null,
cj varchar(10) not null
)create table subject
(kcdh varchar(10) primary key not null,
kcm varchar(30) not null,
xs int not null,
xf int not null)请问这2个表中的KCDH字段如何修改?
谢谢!
解决方案 »
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