BIQQUERY - 总结预览30天

Question

我试图总结预览30天的每个日期，但是，它并没有总结任何东西 在下面的SQL中，我尝试获取订单日期X所有订单来自If Date＆gt; = Date -30days then SU​​M（订单最近30天）END

SELECT 
  a.Shop_Country
  ,a.order_date
  ,a.Order_Week
  ,SUM(a.number_Orders) as orders
  ,CASE WHEN a.Order_Date >= DATE_ADD(b.Order_Date, -30, "day") THEN SUM(a.number_Orders) ELSE 0 END as total_orders
FROM
  [marketing-int:finance_report.overall_view] a
JOIN [marketing-int:finance_report.overall_view] b
  ON a.Order_Date = b.Order_Date

GROUP BY
  a.Shop_Country
  ,a.Order_Date
  ,b.Order_Date
  ,a.Order_Week
  ,a.Order_Channel
  ,a.number_Orders

Answer 1

尝试以下

SELECT 
  Shop_Country
  ,order_date
  ,Order_Week
  ,SUM(number_Orders) OVER(PARTITION BY Shop_Country ORDER BY Order_Date 
      RANGE BETWEEN 29 PRECEDING AND CURRENT ROW) AS total_orders  
FROM
  [marketing-int:finance_report.overall_view]

希望这对你来说是一个好的开始

有关详细信息，请参阅events property的window-frame-clause部分