Facebook FQL選擇每個朋友的2張照片

Question

如何選擇每個朋友的2張個人資料照片？

我有這個疑問：

SELECT object_id, src_small 
FROM photo WHERE aid 
IN (SELECT aid FROM album WHERE owner 
IN (SELECT uid2 FROM friend WHERE uid1 = me()) AND type="profile") 

顯示的每一個朋友每資料圖片。不知怎的，我應該限制爲每個用戶只選擇2個。

任何想法？

Answer 1

您可以在特定查詢以及ORDER BY末尾使用LIMIT語句。

所以，你可以通過添加

ORDER BY created DESC LIMIT 2 

所以，從每一位朋友送2得到他們的2張最新的照片，你必須運行另一個子查詢，從每一位朋友取2：

SELECT object_id, src_small 
    FROM photo WHERE pid 
     IN (SELECT pid FROM photo WHERE aid 
     IN (SELECT aid FROM album WHERE owner 
     IN (SELECT uid2 FROM friend WHERE uid1 = me()) AND type="profile") ORDER BY created DESC LIMIT 2)