根據用戶交易數據計算跨類別銷售-適用於進行過1次以上交易的用戶

Question

嗨，

輸入數據

我有一個每日用戶級別的transaction_data，我想計算每月的跨類別銷售-匯總僅從1個以上類別購買的用戶。

輸出-

有人可以建議如何在sql中進行此操作嗎？

Answer 1

嗯。 。 。 這似乎符合您的描述：

select date_trunc('month', day), category,
       sum(transaction_amount), count(distinct user_id)
from (select d.*,
             min(category) over (partition by userid, date_trunc('month', day)) as min_category,
             max(category) over (partition by userid, date_trunc('month', day)) as max_category
      from daily d
     ) d
where min_category <> max_category -- at least two categories
group by date_trunc('month', day), category;