MySQL：跨多个表的多列连接？

I have a set of three tables:

我有一组三个表:

Dining_Tables;
+--------------------+--------------+------+-----+---------+-------+
| Field              | Type         | Null | Key | Default | Extra |
+--------------------+--------------+------+-----+---------+-------+
| dining_table       | int(11)      | NO   | PRI | NULL    |       |
| bus_boy            | varchar(35)  | NO   |     | NULL    |       |
| waiter             | varchar(35)  | NO   |     | NULL    |       |
| server             | varchar(35)  | NO   |     | NULL    |       |
+--------------------+--------------+------+-----+---------+-------+

Poker_Tables;
+--------------------+--------------+------+-----+---------+-------+
| Field              | Type         | Null | Key | Default | Extra |
+--------------------+--------------+------+-----+---------+-------+
| poker_table        | int(11)      | NO   | PRI | NULL    |       |
| dealer             | varchar(35)  | NO   |     | NULL    |       |
| pit_boss           | varchar(35)  | NO   |     | NULL    |       |
+--------------------+--------------+------+-----+---------+-------+

Computer_Tables;
+--------------------+--------------+------+-----+---------+-------+
| Field              | Type         | Null | Key | Default | Extra |
+--------------------+--------------+------+-----+---------+-------+
| computer_table     | int(11)      | NO   | PRI | NULL    |       |
| programmer         | varchar(35)  | NO   |     | NULL    |       |
+--------------------+--------------+------+-----+---------+-------+
Dini