摘要: create table USER_(UID int primary key,NAME char(14) not null,SEX char(2),BYEAR int,CITY char(20)); create table LABEL_(LID int primary key, LNAME cha 阅读全文
posted @ 2019-05-14 16:14 Stephen_A 阅读(269) 评论(0) 推荐(0) 编辑