有没有办法使总和窗口函数不逐步通过分区求和？

Question

当我尝试对分区求和以得到每个阶段的总和时，它是分区的adds progressively through the rows。

select
        sub_business,
        channel,
        stage,
        time::date                                                                     as time,
        count(session_id)                                                              as count,
        count / lag(count) over (partition by time::date, channel order by count desc) as conversion_rate,
        sum(count) over (partition by stage, time::date order by count)                as total
    from
        loan_dw_test.marketing.uploan_funnel_table
    where
          time::date = '2019-06-21'
      and stage in ('application_view', 'lead')
    group by
        time::date,
        sub_business,
        channel,
        stage
    order by
        time  desc,
        sub_business,
        channel,
        count desc

例如，我想要对所有application_view行获取总计57，对于所有潜在客户行获取62。

Answer 1

为了计算每个分区的总和，您可以跳过ORDER BY：

SELECT  ...
       ,sum(count) over (partition by stage, time::date)
FROM ...