Question

我正在尝试计算这2页的唯一网页浏览量。

注册帐号 - ＆gt; mysite.com/form？account = true＆amp; subscribed
仅限帐户 - ＆gt; mysite.com/form?account=true

我对case函数有这个查询但是当我为每个页面参数分别运行以下查询时，我得到的结果与运行它时的结果不同。但综合结果不准确。有人可以告诉我这里我做错了吗？

     SELECT
    COUNT(DISTINCT (CASE WHEN hits.type = "PAGE" THEN CONCAT(fullvisitorid, 
    STRING(visitid), hits.page.pagepath) END)) AS UniquePageViews,
    CASE WHEN (REGEXP_MATCH (hits.page.pagePath, '(.*account=true)'))  THEN "Accounts" 
    WHEN (REGEXP_MATCH (hits.page.pagePath, '(.*subscribed)')) THEN "Signups" ELSE "Others" END AS Goals
    FROM
     [mydata.ga_sessions_20150506]
    GROUP BY
     Goals

Answer 1

问题可能是同一"account=true"字符串"subscribed"和pagePath都存在的情况，因此当您尝试计算它们时，只考虑一个字符串。

解决问题的一种方法是改变匹配条件，例如：

SELECT
    EXACT_COUNT_DISTINCT(CASE WHEN hits.type = "PAGE" THEN CONCAT(fullvisitorid, 
STRING(visitid), hits.page.pagepath) END) AS UniquePageViews,
    CASE WHEN (REGEXP_MATCH (hits.page.pagePath, '(account=true)') AND NOT REGEXP_MATCH (hits.page.pagePath, '(subscribed)'))  THEN "Accounts" 
         WHEN (REGEXP_MATCH (hits.page.pagePath, '(subscribed)') AND NOT REGEXP_MATCH (hits.page.pagePath, '(account=true)')) THEN "Signups"
         WHEN (REGEXP_MATCH (hits.page.pagePath, '(subscribed)') AND  REGEXP_MATCH (hits.page.pagePath, '(account=true)')) THEN "Both"
         ELSE "Others" END AS Goals
FROM
 [mydata.ga_sessions_20150506]
GROUP BY
 Goals

我强制条件仅匹配"account=true"而不是"subscribed"。

举个例子，这是我在ga_sessions数据集上测试的内容：

SELECT
exact_count_distinct(CASE WHEN hits.type = "PAGE" THEN CONCAT(fullvisitorid, STRING(visitid), hits.page.pagepath) END) AS UniquePageViews,
CASE WHEN (REGEXP_MATCH (hits.page.pagePath, '(colcci)') AND NOT REGEXP_MATCH (hits.page.pagePath, '(lacoste)'))  THEN "colcci" 
     WHEN (REGEXP_MATCH (hits.page.pagePath, '(lacoste)') AND NOT REGEXP_MATCH (hits.page.pagePath, '(colcci)')) THEN "lacoste"
     WHEN (REGEXP_MATCH (hits.page.pagePath, '(lacoste)') AND REGEXP_MATCH (hits.page.pagePath, '(colcci)')) THEN 'both'
     ELSE "Others" END AS Goals
FROM [40663402.ga_sessions_20150506]
GROUP BY
Goals

希望这会有所帮助。有任何问题请告诉我们，

在bigquery

1 个答案: