mysql sql select和inner join for follower/followee names

Question

我一直在努力想出一种方法，如何为每个关注者选择所有关注者姓名和关注者姓名。我的表格如下所示

CREATE TABLE person
(
    id int(10) auto_increment NOT NULL PRIMARY KEY,
    name varchar(100) NOT NULL DEFAULT '',
);

INSERT INTO person (name) VALUES ('John');
INSERT INTO person (name) VALUES ('Alice');
INSERT INTO person (name) VALUES ('Eve');
INSERT INTO person (name) VALUES ('Edgar');
INSERT INTO person (name) VALUES ('Malorie');

CREATE TABLE follows
(
    id int(10) NOT NULL DEFAULT '0',
    fid int(10) NOT NULL DEFAULT '0'
);

INSERT INTO follows (id,fid) VALUES (1,2);
INSERT INTO follows (id,fid) VALUES (1,3);
INSERT INTO follows (id,fid) VALUES (1,4);
INSERT INTO follows (id,fid) VALUES (2,1);
INSERT INTO follows (id,fid) VALUES (2,5);
INSERT INTO follows (id,fid) VALUES (3,2);
INSERT INTO follows (id,fid) VALUES (5,2);
INSERT INTO follows (id,fid) VALUES (5,1);

到目前为止我已经想出了这样的声明，但显然它没有按需要工作

SELECT person.name FROM person INNER JOIN follows ON (person.id = follows.id) 

我如何进行查询以在一个查询中同时选择 folower 和 folowee 命名他的追随者？

预期的结果应该是这样的

+---------+---------+
| folower | folowee |
+---------+---------+
| John    | Eve     |
| John    | Alice   |
| John    | Malorie |
| Alice   | John    |
| Alice   | Eve     |
| Eve     | Alice   |
+---------+---------+

Answer 1

您可以对人员使用两次加入，一次用于个人，一次用于追随者姓名

    SELECT person.name , follower.name
    FROM person 
    INNER JOIN follows ON (person.id = follows.id) 
    INNER JOIN person as follower on follows.fid = follower.id