SQL查询一年前50名客户跨年销售额

Question

我在 SQL 服务器中有一个查询，该查询成功地 return 列出了给定年份销售额的前 50 名客户。我想将其扩展到 return 他们可能进入或不进入前 50 名的额外年份的销售额。

SELECT TOP 50 CU.CustomerName, SUM(ART.SalesAnalysis) AS '2011'
FROM ARTransaction AS ART, Customer AS CU
WHERE ART.CustomerN = CU.CustomerN AND ART.PostingDate BETWEEN '2010-12-31' AND '2012-01-01'
GROUP By CU.CustomerName
ORDER BY SUM(ART.SalesAnalysis) DESC

我尝试添加嵌套的 SELECT 语句，但它们 return 奇怪的结果，我不确定为什么（可能永远行不通，但结果让我大吃一惊）。当包含时，每一行的值都会更改并且客户会重复。

(SELECT SUM(ART.SalesAnalysis)
WHERE ART.PostingDate BETWEEN '2011-12-31' AND '2013-01-01') AS '2012'

我试图在 HAVING 的嵌套 SELECT 中放置一个 TOP 语句，但这告诉我

“消息 8114，级别 16，状态 5，第 1 行

将数据类型 varchar 转换为数字时出错。"

SELECT CU.CustomerName, SUM(ART.SalesAnalysis) AS '2011'
FROM ARTransaction AS ART 
JOIN Customer AS CU ON ART.CustomerN = CU.CustomerN
GROUP BY CU.CustomerNAme
HAVING CU.CustomerNAme IN 
        (SELECT TOP 50 CU.CustomerName
        FROM ARTransaction
        JOIN Customer ON ARTransaction.CustomerN = Customer.CustomerN
        WHERE ARTransaction.SalesAnalysis BETWEEN '2010-12-31' AND '2012-01-01'
    GROUP BY Customer.CustomerN
    ORDER BY SUM(ART.SalesAnalysis) DESC)

Answer 1

您可以使用类似下面的内容...您将查看您想要查看的所有年份的所有数据，然后只获得 2011 年的前 50 名

SELECT TOP 50 
    CU.CustomerName, 
    SUM(case when year(ART.PostingDate) = 2011 -- or you could use case when ART.PostingDate BETWEEN '2011-01-01' AND '2011-12-31'
        then ART.SalesAnalysis
        else 0 end) AS 2011, 
    SUM(case when year(ART.PostingDate) = 2012
        then ART.SalesAnalysis
        else 0 end) AS 2012
FROM 
    ARTransaction ART, 
    inner join Customer CU
        on ART.CustomerN = CU.CustomerN
WHERE ART.PostingDate BETWEEN '2011-01-01 AND '2012-12-31'
GROUP By CU.CustomerName
ORDER BY  
    SUM(case when year(ART.PostingDate) = 2011
        then ART.SalesAnalysis
        else 0 end)  DESC

Answer 2

如果我没理解错的话，您正在寻找基于 2011 年数据的前 50 名客户的销售额 - 并希望查看自 2011 年以来前 50 名的所有年份数据，而不管这些客户是否在其他客户的前 50 名中年.

试试这个，可能需要稍微调整一下，因为我不知道架构，但如果我正确理解问题，这应该可以解决问题。

    WITH Top50 AS (
    SELECT TOP 50 
           CU.CustomerN
          ,SUM(ART.SalesAnalysis) AS SalesTotal
      FROM 
           ARTransaction art
     INNER JOIN
           Customer cu
        ON cu.CustomerN = art.CustomerN
     WHERE 
           ART.PostingDate BETWEEN CAST('2011-01-01' AS DATETIME) 
       AND CAST('2011-12-31' AS DATETIME)
     GROUP BY 
           CU.CustomerN
     ORDER BY 
           SUM(ART.SalesAnalysis) DESC)

    SELECT 
           c.CustomerName
          ,SUM(a.SalesAnalysis) AS TotalSales
          ,YEAR(a.PostingDate) AS PostingDateYear
      FROM
           ARTransaction a
     INNER JOIN
           Customer c
        ON c.CustomerN = a.CustomerN
     INNER JOIN
           Top50 t
        ON t.CustomerN = a.CustomerN
     GROUP BY 
           c.CustomerName
          ,YEAR(a.PostingDate)
     ORDER BY
           PostingDateYear

SQL查询一年前50名客户跨年销售额

SQL query of sales by customer over multiple years for top 50 customers in one year

sql

sql-server

select

nested