您可以使用 Graph API Explorer 进行尝试:
SELECT post_id, id, fromid, time, text, user_likes, likes FROM comment WHERE post_id ='126757470715601_530905090300835' AND time < '1366318653' ORDER BY time DESC LIMIT 30
这将返回一个空的结果集。但是如果我从查询中删除 DESC,它将返回 30 个结果。
SELECT post_id, id, fromid, time, text, user_likes, likes FROM comment WHERE post_id ='126757470715601_530905090300835' AND time < '1366318653' ORDER BY time LIMIT 30
因此,通过某种方式改变了 LIMIT 的行为方式,将 DESC 添加到订单中。任何人都可以对此有所了解吗?