Question

我第一次使用窗口函数。我有一个基本的窗口函数，我想用Medium对结果进行分组，当我这样做时，我得到了错误：

Error: SELECT list expression references totals.visits which is neither grouped nor aggregated at [1:12]

在我看来，我总结了第一行的总数。访问量，我在这里缺少什么？我希望看到按国家/地区划分的访问总次数，例如：

VISITS          COUNTRY
1500            United Kingdom
750             Ireland
etc.

这是我的问题：

 SELECT
        SUM(totals.visits) OVER(PARTITION BY geoNetwork.country
                                ORDER BY geoNetwork.country) AS Visits_by_Medium,
        trafficSource.medium AS Medium
    FROM `xxx.ga_sessions_20171010`
    GROUP BY Medium

Answer 1

我想你只想要一个简单的GROUP BY查询：

SELECT
    SUM(totals.visits) AS VISITS,
    geoNetwork.country
FROM xxx.ga_sessions_20171010
GROUP BY
    geoNetwork.country;

修改

运行以下查询以查看窗口函数将返回的总和：

SELECT SUM(totals.visits) OVER(PARTITION BY geoNetwork.country ORDER BY geoNetwork.country) AS Visits_by_Medium, trafficSource.medium AS Medium FROM xxx.ga_sessions_20171010;

窗口函数中的基本分组

1 个答案: