如何在Oracle SQL中制定約束?Oracle檢查約束
Create Table A(
b varchar(25) primary key,
c varchar(25),
constraint b_1
check(b='name' and c != 'notallowed')
);
以下應不工作:
Insert into A values('name','notallowed');
但這應該工作:
Insert into A values('notname','notallowed');
如何解決我的約束?
Ver優雅! +1! – Mureinik