Question

当我从流表中提取搜索结果时，返回的其中一个组件是一个注释数组。我想知道是否有任何基于评论数组中评论文本的搜索方式？

这是我的查询。它目前的形式很好：


    SELECT post_id, attribution, message, description, comments.comment_list.text, likes,
     place, permalink, message_tags, message,  description_tags, type
    FROM stream WHERE filter_key in 
    (SELECT filter_key FROM stream_filter WHERE uid=me()) 
    AND 
    (
    (strpos(lower(message), 'college football') >= 0) OR 
    (strpos(lower(description), 'college football') >= 0) OR 
    (strpos(lower(attribution), 'college football') >= 0)
    )
    order by created_time desc

其中一个返回行的 comments.comment_list.text 结果如下所示：


    "comments": {
            "comment_list": [
             {
                "text": "I love college football"
             },
             {
                "text": "Alabama and LSU rule college football"
             }
             ]
    }

我的问题是：我是否有办法以与消息相同的方式搜索 comments.comment_list.text ，上面的描述和归因？当我尝试添加如下内容时：


    (strpos(lower(comments.comment_list.text), 'college football') >= 0)

我有一个空数据集（有趣的是，我没有得到任何错误，只是空结果）。我可以看到原因，因为我需要以某种方式能够遍历注释数组，然后检索它们的文本并对注释文本进行比较。我想在Facebook端使用FQL执行此操作，并希望避免检索所有结果，然后在我的结尾迭代它们。关于我如何能够做到这一点的任何想法或建议？

提前感谢您的帮助！

Answer 1

comments表中的stream字段仅检索注释的子集。我认为限制是5.那么，搜索FQL返回的数组似乎应该很容易。事实并非如此。

最好的办法是将其转换为多重查询。要获得结果，您只需查看#combined数据。

{'all_posts':
   'SELECT post_id FROM stream WHERE filter_key in 
    (SELECT filter_key FROM stream_filter WHERE uid=me())',
 'commented':
    'SELECT post_id FROM comment WHERE post_id IN (SELECT post_id FROM #all_posts)
      AND (strpos(lower(text), 'college football') >= 0',
 'combined':
    'SELECT post_id, attribution, message, description, comments.comment_list.text, likes,
      place, permalink, message_tags, message,  description_tags, type
      FROM stream WHERE post_id IN (SELECT post_id FROM #all_posts) AND 
       (
        (strpos(lower(message), 'college football') >= 0) OR 
        (strpos(lower(description), 'college football') >= 0) OR 
        (strpos(lower(attribution), 'college football') >= 0)
       )
     OR post_id IN (SELECT post_id FROM #commented)
    order by created_time desc'
}

FQL - 在流中搜索注释数组

1 个答案: