MYSQL七种关系图
MYSQL七种查询关系。CREATE TABLE t_blog(id INT PRIMARY KEY AUTO_INCREMENT,title VARCHAR(50),typeId INT);SELECT * FROM t_blog;±—±------±-------+| id | title | typeId |±—±------±-------+| 1 | aaa | 1 || 2 | bbb | 2 || 3 | ccc |
