聚合行標籤

Question

下面的代碼按其所屬商店代碼列出了帳戶號碼，並在帳戶旁放置了諸如「過期」，「活動」或「舊」之類的標籤。我希望能夠根據每個商店代碼創建一個彙總，其中顯示了每個商店類型中有多少個商店，例如shop_thames = 1老，4個活動和10個過期。我將如何實現這一目標？

SELECT 
shop_code, 
CASE WHEN MAX(i_date) < DATEADD(day , - 180 , GETDATE()) THEN 'Expired' WHEN MAX(i_date) > DATEADD(day , - 30 , GETDATE())THEN 'Active' ELSE 'Old' END AS Account_Type, 
account_id, 
SUM(Revenue) AS Spend 

FROM 
[company].[dbo].name 

WHERE 
Date_Reporting_LY = '2016' 
AND Total_Revenue > 0 

GROUP BY 
shop_code, 
account_id 

Answer 1

像這樣的東西應該這樣做：

select shop_code, account_type, count(*) 
    from (SELECT shop_code, 
       CASE WHEN MAX(i_date) < DATEADD(day , - 180 , GETDATE()) THEN 'Expired' WHEN MAX(i_date) > DATEADD(day , - 30 , GETDATE())THEN 'Active' ELSE 'Old' END AS Account_Type 
      FROM [company].[dbo].name  
     WHERE Date_Reporting_LY = '2016' 
      AND Total_Revenue > 0) x 
GROUP BY shop_code, Account_Type 

Answer 2

讓您的查詢主要是原樣，而在另一個包裝它選擇：

SELECT shop_code, account_type, count(*) 
FROM (
SELECT 
shop_code, 
CASE WHEN MAX(i_date) < DATEADD(day , - 180 , GETDATE()) THEN 'Expired' WHEN MAX(i_date) > DATEADD(day , - 30 , GETDATE())THEN 'Active' ELSE 'Old' END AS Account_Type, 
account_id, 
SUM(Revenue) AS Spend 

FROM 
[company].[dbo].name 

WHERE 
Date_Reporting_LY = '2016' 
AND Total_Revenue > 0 

GROUP BY 
shop_code, 
CASE WHEN MAX(i_date) < DATEADD(day , - 180 , GETDATE()) THEN 'Expired' WHEN MAX(i_date) > DATEADD(day , - 30 , GETDATE())THEN 'Active' ELSE 'Old' END 
account_id 
) x 
GROUP BY 
shop_code, 
account_type 

一個改變你原來的查詢 - MySQL的並不強調你在集合函數外選擇了所有的元素，但這是最好的實踐。如圖所示，如果您按照整個案例分組進行分組，則可避免按您無法看到的值進行聚合時出現問題。