mysql - 使用左连接限制查询

Question

我有 2 个这样的表:

table 上人

id | name
---------
1  | john
2  | mike
3  | carl
4  | keny
5  | anna

table 车

owner | vechicle
----------------
1     | RTA457
3     | GSW684
3     | GKI321
3     | SNE798
5     | YTT662

所以，我想进行一个连接两个表的查询，如下所示:

SELECT * FROM person LEFT JOIN vehicle ON person.id=vehicle.owner

得到这些结果

id | name | owner | vechicle
----------------------------
1  | john | 1     | RTA457
2  | mike | NULL  | NULL
3  | carl | 3     | GSW684
3  | carl | 3     | GKI321
3  | carl | 3     | SNE798
4  | keny | NULL  | NULL
5  | anna | 5     | YTT662

最后，我想限制3个人，展示他们所有的车辆，像这样:

id | name | owner | vechicle
----------------------------
1  | john | 1     | RTA457
2  | mike | NULL  | NULL
3  | carl | 3     | GSW684
3  | carl | 3     | GKI321
3  | carl | 3     | SNE798

有什么办法吗？

Answer 1

可能有助于子查询

SELECT
    *
FROM
    (SELECT * FROM person LIMIT 3) t
LEFT JOIN vehicle ON t.id = vehicle.owner