--检查约束
create table test1(
id number(10) primary key,
email varchar2(10) check (email like '%@%')
)
drop table test1
insert into test1 values(1,'12@6.com');
select * from test1
create table test2(
id number primary key,
gender varchar2(4) check(gender in('男','女'))
)
drop table test2
select * from test2
insert into test2 values(1,'男')
create table test30(
id number primary key,
sex varchar2(2) check(sex ='男' or sex='女')
);
参考:Oracle Check约束