1、新建主鍵table 1 create table demo1_zhujian (
2 id int primary key auto_increment,
3 name varchar(10)); 2、新建外鍵table 1 create table demo2_waijian ( 2 id int primary key auto_increment, 3 _id int not null default 0, 4 name varchar(10), 5 index (_id),
时间:2023-12-06 | 阅读:19