是否可以在GROUP BY中執行子查詢？

Question

我的問題的比喻是這樣的：

table: place 
id title   branch 
=============================== 
1 pizza store  california 
2 pizza store  manhattan 
3 coffee shop  california 
4 pizza store  texas 
5 cookie store  new york 

table: rating 
id place_id  rating 
================================ 
1  1   3.5 
2  2   5.0 
3  2   4.2 
4  2   5.0 
5  5   4.0 

我使用的查詢：

SELECT F.id AS id, F.title AS title, G.rating 
FROM place F 
JOIN rating G ON F.id = G.place_id 
GROUP BY F.title 

顯示爲：

id title   rating 
=========================== 
1 pizza store 3.5 
3 coffee shop - 
5 cookie store 4.0 

我想要的是那種具有評級，標題最大的一個，在這種情況下，我希望它顯示評分5和ID 2的比薩店。是否可以在GROUP BY中插入一些子查詢？

在此先感謝！

Answer 1

嘗試

SELECT F.id , F.title, s.Maxrating 
FROM place F 
INNER JOIN (SELECT id,Max(rating) as MaxRating FROM rating GROUP BY place_id) s 
ON s.id = F.id 

Answer 2

SELECT F.id AS id, F.title AS title, max(G.rating) 
FROM place F, rating G 
where F.id = G.place_id(+) 
group by f.id, f.title