Question

我的目标是从所有访问者中过滤，仅分析客户（位于customDimension.index =2中，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

我得到了错误（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：无法查询重复字段的叉积 customDimensions.index和hits.contentGroup.contentGroup2。

修改

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'来纠正3:20行 Error: Syntax error: Unexpected keyword UNNEST at [3:15]

Answer 1

由于customDimensions是一个数组，您需要SELECT customDimension.value AS UserID FROM `my.project.data` AS t CROSS JOIN UNNEST(t.customdimensions) AS customDimension WHERE customDimension.index = 2才能引用它的内容，请参阅下面的StandardSQL示例，其中我从BigQuery中的Google Analytics数据中删除了UserID：< / p>

{{1}}

BigQuery SQL：无法查询重复字段的叉积/

1 个答案: