使用 JSON 进行 ADF 解析转换答案

【问题标题】：ADF Parse Transformation with JSON使用 JSON 进行 ADF 解析转换
【发布时间】：2021-05-20 15:15:23
【问题描述】：

我有以下 JSON 对象：

    {
    "comments_count": 0,
    "impressions": 2838,
    "lifetime_snapshot.followers_count": 14993,
    "likes": 10,
    "net_follower_growth": -3,
    "post_content_clicks": 19,
    "post_media_views": 415,
    "shares_count": 1,
    "video_views": 415
    }

在 Azure 数据工厂解析转换中，我正在使用以下表达式创建一个复杂对象：

    (impressions as integer,
    likes as integer,
    comments_count as integer,
    lifetime_snapshot as (snap as (followers_count as integer)),
    net_follower_growth as integer,
    post_content_clicks as integer,
    post_media_views as integer,
    shares_count as integer,
    video_views as integer)

在“数据预览”选项卡中，我得到了所有正确的整数值，但为 NULL 的 follower_count 除外。

获取lifetime_snapshot.followers_count 字段值的正确语法是什么？

【问题讨论】：

标签： azure azure-data-factory-2 azure-data-factory-pipeline

【解决方案1】：

请试试这个语法：

(
    impressions as integer,
    likes as integer,
    comments_count as integer,
    {lifetime_snapshot.followers_count} as integer,
    net_follower_growth as integer,
    post_content_clicks as integer,
    post_media_views as integer,
    shares_count as integer,
    video_views as integer
)

数据预览：

【讨论】：