Oracle 检查约束check
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Oracle 检查约束check
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‘)