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我的目标是从所有访问者中过滤，仅分析客户（其中包含客户customDimension.index =2，然后进一步过滤客户的特定类型的综合浏览量。

SELECT customDimensions.value AS CustomerID,
SUM(totals.pageviews) as page_views,
SUM(CASE WHEN hits.type = 'PAGE' AND hits.contentGroup.contentGroup2 = 'important' THEN 1 ELSE 0 END) AS important_pageviews
FROM `xxxxxxxx.ga_sessions_20180415`
WHERE customDimensions.index = 2
GROUP BY CustomerID

我得到错误（使用 StandardSQL）：

Error: Cannot access field index on a value with type
ARRAY<STRUCT<index INT64, value STRING>> at [5:24]

对于旧版 SQL：

错误：无法查询重复字段 customDimensions.index 和 hits.contentGroup.contentGroup2 的叉积。

编辑：

SELECT cd.value AS CustomerID,
SUM(totals.pageviews) as page_views,
SUM(CASE WHEN hits.type = 'PAGE' AND hits.contentGroup.contentGroup2 = 'important' THEN 1 ELSE 0 END) AS important_pageviews
FROM `xxxxxxxx.ga_sessions_20180415`,
UNNEST(customDimensions) AS cd
WHERE cd.index = 2
GROUP BY CustomerID

返回：

Error: Cannot access field type on a value with type ARRAY<STRUCT<hitNumber INT64, time INT64, hour INT64, ...>> at [3:20]

我尝试使用UNNEST(hits.type) = 'PAGE' AND UNNEST(hitscontentGroup.contentGroup2) = 'important'which 更正 3:20 行Error: Syntax error: Unexpected keyword UNNEST at [3:15]

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1 回答 1

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由于 customDimensions 是一个数组，您需要unnest它才能引用它的内容，请参阅下面的 StandardSQL 示例，其中我在 BigQuery 中从 Google Analytics 数据中取消嵌套 UserID：

SELECT customDimension.value AS UserID
FROM `my.project.data` AS t
  CROSS JOIN UNNEST(t.customdimensions) AS customDimension
  WHERE customDimension.index = 2
于 2018-04-16T11:06:13.983 回答