Question

在我的主查询中，我有一个子查询来返回12周内的平均净销售额，但由于餐厅因装修或扩建而关闭，这会使价值扭曲。

如何更改查询以不计算net为空的日期？

SELECT                 System_RestaurantDateJoined.StoreKey, System_RestaurantDateJoined.RestaurantName, System_RestaurantDateJoined.Ownership 
                      ,System_RestaurantDateJoined.LeaseEagle_ID, System_RestaurantDateJoined.State, System_RestaurantDateJoined.DateKey,   
CASE WHEN DimLFL.Commentary = 'New Rest' THEN 'Category 1 - New Rest as flagged in LFL File'
WHEN DimLFL.Commentary = 'Mjr Reno' THEN 'Category 2 - Reno Rest as flagged in LFL File'
WHEN DimLFL.Commentary = 'Min Reno' THEN 'Category 2 - Reno Rest as flagged in LFL File'
WHEN DimLFL.Commentary = 'Temp Close' THEN 'Category 3 - Temp Closure'
WHEN ISNULL(Daily_Sales_Summary.Net, 1) <= 1 THEN 'Category 4 - Missing Data' 
WHEN ISNULL(Daily_Sales_Summary.LastYear_Net, 1) = 1 THEN 'Category 6 - No sales last year'
WHEN ISNULL(Daily_Sales_Summary.[LastWeek_Net],1) <= 1 THEN 'Category 7 - Missing Data for Last Week'
ELSE    'Category 5 - Potential Over/Under stated sales'
END as Category
                      ,Daily_Sales_Summary.Net, Daily_Sales_Summary.[LastWeek_Net], Daily_Sales_Summary.LastYear_Net
                      ,ISNULL(Daily_Sales_Summary.[12Week_Net], (SELECT     AVG(Net) AS AVGNET
FROM         (SELECT     TOP (12) Net
                       FROM           FactBankingAndDailySummary AS FB INNER JOIN
                      DimDate ON FB.DateKey = DimDate.DateKey
                       WHERE      (FB.StoreKey = System_RestaurantDateJoined.StoreKey) AND (FB.DateKey <= System_RestaurantDateJoined.DateKey) AND 
                                              (DimDate.DayNameOfWeek = System_RestaurantDateJoined.DayNameOfWeek) AND (FB.DateKey >= (FB.DateKey - 84))
                       ORDER BY FB.DateKey, StoreKey DESC) AS WKAV)) AS [12Week_Net]
                      ,Daily_Sales_Summary.TransactionCount,Daily_Sales_Summary.[LastWeek_TransactionCount]
                      ,Daily_Sales_Summary.LastYear_TransactionCount, Daily_Sales_Summary.[12Week_TransactionCount], System_RestaurantDateJoined.FullDate
                      ,System_RestaurantDateJoined.DayNameOfWeek, System_RestaurantDateJoined.FinancialWC, System_RestaurantDateJoined.strFinancialWeek
                      ,DimLFL.Commentary
FROM         Daily_Sales_Summary RIGHT OUTER JOIN
                      System_RestaurantDateJoined LEFT OUTER JOIN 
                      DimLFL ON System_RestaurantDateJoined.StoreKey = DimLFL.StoreKey AND System_RestaurantDateJoined.DateKey = DimLFL.DateKey ON 
                      Daily_Sales_Summary.RedCatID = System_RestaurantDateJoined.StoreKey AND 
                      Daily_Sales_Summary.DateKey = System_RestaurantDateJoined.DateKey

Answer 1

将平均值实现为Sum(Value) * 1.0 / Count([something])，其中[something]是一个表达式，当数据不应在分母中计算时返回null。如果Value在没有数据时为空，那么它只是Sum(Value) * 1.0 / Count(Value)。

由于周数不完整，12周平均查询会返回扭曲的值

1 个答案: