第1个回答 推荐于2017-12-15
create table student
(
student_id int primary key, 整型,主键约束
student_name varchar(20) not null,可变长字符串类型,非空约束
student_age int check(student_age>6),整型,check约束
……
)
insert into table student values (1,'wangang',10)
insert into table student values (2,'zhaoqiang',9)
insert into table student values (3,'lihong',8)本回答被提问者采纳