从 Google Ads BigQuery 数据传输中提取/取消嵌套数组

Posted 2023-03-08

【中文标题】从 Google Ads BigQuery 数据传输中提取/取消嵌套数组

【英文标题】：Extract/ Unnest Arrays from Google Ads BigQuery Data Transfer

【发布时间】：2021-08-12 09:31:51

【问题描述】：

我正在尝试提取 Google Ads 通过 BigQuery 数据传输发送的 JSON 数组中包含的 Unnest 数据。不幸的是，我被卡在了中间。

BigQuery 表中的原始数据：

CreativeId

ResponsiveSearchAdDescriptions

487067671679

["assetText":"SearchAds Description Text 1","assetId":12443453594,"pinnedField":"DESCRIPTION_1","assetPerformanceLabel":"PENDING","assetApprovalStatus":"APPROVED","assetText":"SearchAds Description Text 2","assetId":12443453165,"assetPerformanceLabel":"PENDING","assetApprovalStatus":"APPROVED","assetText":"SearchAds Description Text 3","assetId":12443453168,"assetPerformanceLabel":"PENDING","assetApprovalStatus":"APPROVED","assetText":"SearchAds Description Text 4","assetId":12443419160,"assetPerformanceLabel":"PENDING","assetApprovalStatus":"APPROVED"]

期望的结果：

CreativeId	ResponsiveSearchAdDescriptions_assetText	ResponsiveSearchAdDescriptions_assetId	ResponsiveSearchAdDescriptions_pinnedField	ResponsiveSearchAdDescriptions_assetPerformanceLabel	ResponsiveSearchAdDescriptions_assetApprovalStatus
487067671679	SearchAds Description Text 1	12443453594	DESCRIPTION_1	PENDING	APPROVED
487067671679	SearchAds Description Text 2	12443453165	---	PENDING	APPROVED
487067671679	SearchAds Description Text 3	12443453168	---	PENDING	APPROVED
487067671679	SearchAds Description Text 4	12443419160	---	PENDING	APPROVED

这是最接近我但仍显示 JSON 的查询。

SELECT
  CreativeId,
  JSON_QUERY_ARRAY(ResponsiveSearchAdDescriptions) AS Ads
FROM
  `priXXXXXX.sandbox.Ad_XXXXXXX`
WHERE
  ResponsiveSearchAdDescriptions IS NOT NULL
LIMIT
  100

查询应该能够包含这个条件ResponsiveSearchAdDescriptions IS NOT NULL

一些想法？

【参考方案1】：

使用下面的方法

select Creativeld, 
  json_extract_scalar(el, '$.assetText') as assetText,
  json_extract_scalar(el, '$.assetId') as assetId,
  json_extract_scalar(el, '$.pinnedField') as pinnedField,
  json_extract_scalar(el, '$.assetPerformanceLabel') as assetPerformanceLabel,
  json_extract_scalar(el, '$.assetApprovalStatus') as assetApprovalStatus
from `priXXXXXX.sandbox.Ad_XXXXXXX`,
unnest(json_extract_array(ResponsiveSearchAdDescriptions, '$')) el          

如果应用于您问题中的样本数据 - 输出是