摘要: 一、主键: create table t4(id int not null auto_increment primary key, name char(10), num int )engine =innodb default charset=utf8; primary key: 主键 ps: id 阅读全文
posted @ 2018-08-30 20:32 OYxing 阅读(207) 评论(0) 推荐(0) 编辑