MrNiebit / -solo-blog

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mybatis多对一、一对多查询 - gitsilence 的个人博客 #43

Open MrNiebit opened 3 years ago

MrNiebit commented 3 years ago

http://blog.lacknb.cn/articles/2019/09/24/1577974154963.html

数据库备份文件 DROP TABLE IF EXISTS user; CREATE TABLE user ( uid int(11) NOT NULL, uname varchar(255) DEFAULT NULL, usex varchar(255) DEFAULT NULL, PRIMARY KEY (uid) ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4; -- ---------------------------- -- Records of user -- ---------------------------- INSERT INTO user VALUES ('1', '张三', '男'); INSERT INTO user VALUES ('2', '李四', '男'); DROP TABLE IF EXISTS friend; CREATE TABLE friend ( friend_id int(11) NOT NULL, friend_name varchar(255) DE....