sql语句创建外键关联的完整实例

詹蜜之家

以创建学生教师表为例: 学生 id 关联教师 tid

学生表: student

教师表: teacher

sql语句 :

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use school;   create table student( id int(10) not null primary key, name varchar(30) default null, tid int(10) default null, key `fktid` (`tid`), constraint `fktid` foreign key(`tid`) references `teacher` (`id`) )engine=innodb default charset=utf8   insert into student values(1,'小明',1); insert into student values(2,'小红',1); insert into student values(3,'小刚',1); insert into student values(4,'小王',1); insert into student values(5,'小智',1);   select * from student;   create table teacher ( id int(10) primary key not null, name varchar (30) default null )engine=innodb default charset=utf8     insert into teacher values(1,'陈老师'); select * from teacher;

重点: 外键关联语句,会手写才可以!

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1 2	key `fktid` (`tid`), constraint `fktid` foreign key(`tid`) references `teacher` (`id`)

总结

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原文链接：https://blog.csdn.net/SoULikeMe/article/details/113368984