oracle建表

create table xsxxgl_test(
xh varchar2(20) not null,
xm varchar2(100),
sfzjh varchar2(100),
bz varchar2(200),
primary key (xh)
);

comment on table xsxxgl_test is '测试表';
comment on column xsxxgl_test.xh is '学号';
comment on column xsxxgl_test.xm is '姓名';
comment on column xsxxgl_test.sfzjh is '身份证号';
comment on column xsxxgl_test.bz is '备注';

 测试，，