Mysql 如何在sql中进行分组连接？

我有两张桌子，让我们假设它们是：

宠物

+----+----------+-------+
| id | name     | type  |
+----+----------+-------+
| 1  | itchy    | mouse |
| 2  | poochie  | dog   |
| 3  | scratchy | cat   |
| 4  | john     | human |
+----+----------+-------+

+----+---------------+--------+
| id | name          | pet_id |
+----+---------------+--------+
| 1  | collar_heaven | 2      |
| 2  | red_collar    | 2      |
| 3  | cat_collar    | 3      |
| 4  | tiny_collar   | 1      |
| 5  | backup_collar | 2      |
+----+---------------+--------+

衣领

+----+----------+-------+
| id | name     | type  |
+----+----------+-------+
| 1  | itchy    | mouse |
| 2  | poochie  | dog   |
| 3  | scratchy | cat   |
| 4  | john     | human |
+----+----------+-------+

+----+---------------+--------+
| id | name          | pet_id |
+----+---------------+--------+
| 1  | collar_heaven | 2      |
| 2  | red_collar    | 2      |
| 3  | cat_collar    | 3      |
| 4  | tiny_collar   | 1      |
| 5  | backup_collar | 2      |
+----+---------------+--------+

（注意宠物id#4没有项圈）

我想为与宠物连接的每个项圈选择

MIN（名称）

和

MAX（名称）

因此，期望的输出是：

预期产出

+----+----------+-------+-------------------+------------------+
| id | name     | type  | collar_first_name | collar_last_name |
+----+----------+-------+-------------------+------------------+
| 1  | itchy    | mouse | tiny_collar       | tiny_collar      |
| 2  | poochie  | dog   | backup_collar     | red_collar       |
| 3  | scratchy | cat   | cat_collar        | cat_collar       |
| 4  | john     | human | NULL              | NULL             |
+----+----------+-------+-------------------+------------------+

基本上是某种

SELECT id, name, type, MIN(name) as first_name, MAX(name) as last_name 
FROM pets JOIN collars 
GROUP BY pet_id