Postgresql选择联接按计数排序

我有两张桌子

货物：

                          Table "public.goods"
     Column      |           Type           |         Modifiers         
-----------------+--------------------------+---------------------------
 goods_id        | character varying        | not null
 goods_owner_id  | character varying        | not null

卖方：

                          Table "public.sellers"
     Column      |           Type           |         Modifiers         
-----------------+--------------------------+---------------------------
 sellers_id      | character varying        | not null
 sellers_name    | character varying        | not null

如何提出能向卖家展示最多数量商品的请求？ 谢谢。

以下是sql查询：

SELECT sellers.sellers_id 
    FROM goods JOIN sellers ON goods.goods_owner_id = sellers.sellers_id
    GROUP BY sellers.sellers_id
    ORDER BY COUNT(goods.goods_id) DESC 
    LIMIT 1 

---

public.goods

表是否具有引用

public.sellers

的

sellers\u id

列的外键约束？不存在此类约束。