SQL每月銷售前10名

Question

問候所有。我有一個SQL 2008 Express數據庫，讓名字是tbl_Merchant，類似如下：

Merchant | Sales | Month 
Comp.1  100  1 
Comp.2  230  1 
Comp.3  120  1 
Comp.1  200  2 
Comp.2  130  2 
Comp.3  240  2 
Comp.1  250  3 
    .   .  . 
    .   .  . 
    .   .  . 

我每個月需要找到前10的商家銷售額超過12個月。

如果只是一個月，這很容易。

SELECT TOP 10 
     Merchant, 
     Sales, 
     Month 
FROM tbl_Merchant 
WHERE Month = 1 
ORDER BY Sales DESC 

但是如果我想在12個月內找到它們，我就會陷入困境。我需要顯示120個商家，這是每個月的前10名銷售商。目前我的解決方案是將12月份的12個表格合併在一起，但我認爲這不是一個好方法。

任何人都可以給我任何建議嗎？

非常感謝。

Answer 1

有效的SQL Server 2005+

試試這個整體：

SELECT TOP 10 
     Merchant, 
     SUM(Sales) Sales 
FROM tbl_Merchant 
WHERE Month BETWEEN 1 and 12 
GROUP BY Merchant 
ORDER BY 2 DESC 

OR

，如果你需要每月細節十大每月

;WITH MonthsCTE(m) as 
(
    SELECT 1 m 
    UNION ALL 
    SELECT m+1 
    FROM MonthsCTE 
    WHERE m < 12 
) 
SELECT m [Month], t.* 
FROM MonthsCTE 
CROSS APPLY 
(
    SELECT TOP 10 
     Merchant, 
     SUM(Sales) Sales 
    FROM tbl_Merchant 
    WHERE Month = MonthsCTE.m 
    GROUP BY Merchant 
    ORDER BY 2 DESC 
) t 

Answer 2

select top 10 Merchant, sum(Sales) from tbl_Merchant group by Merchant order by sum(Sales) desc 

我更PostgreSQL的傢伙，但我認爲它可能沒有（或很少）的改裝工作在MSSQL

Answer 3

可以嘗試以下方法：

SELECT top 10 Merchant, 
isnull(SUM(CASE WHEN Month(ta.dt) = '01' THEN Sales END),0) AS "Jan Sales", 
isnull(SUM(CASE WHEN Month(ta.dt) = '02' THEN Sales END),0) AS "Feb Sales", 
isnull(SUM(CASE WHEN Month(ta.dt) = '03' THEN Sales END),0) AS "Mar Sales", 
isnull(SUM(CASE WHEN Month(ta.dt) = '04' THEN Sales END),0) AS "Apr Sales", 
isnull(SUM(CASE WHEN Month(ta.dt) = '05' THEN Sales END),0) AS "May Sales", 
isnull(SUM(CASE WHEN Month(ta.dt) = '06' THEN Sales END),0) AS "Jun Sales", 
isnull(SUM(CASE WHEN Month(ta.dt) = '07' THEN Sales END),0) AS "Jul Sales", 
isnull(SUM(CASE WHEN Month(ta.dt) = '08' THEN Sales END),0) AS "Aug Sales", 
isnull(SUM(CASE WHEN Month(ta.dt) = '09' THEN Sales END),0) AS "Sep Sales", 
isnull(SUM(CASE WHEN Month(ta.dt) = '10' THEN Sales END),0) AS "Oct Sales", 
isnull(SUM(CASE WHEN Month(ta.dt) = '11' THEN Sales END),0) AS "Nov Sales", 
isnull(SUM(CASE WHEN Month(ta.dt) = '12' THEN Sales END),0) AS "Dec Sales" 

FROM tbl_Merchant ORDER BY Sales DESC 

十大銷量每月將顯示爲每月不同的列。

希望它可以幫助你。

Answer 4

嘗試：

select * from 
(SELECT Merchant, 
     Sales, 
     Month, 
     row_number() over (partition by Month order by Sales desc) rn 
FROM tbl_Merchant 
WHERE Month between 1 and 12) v 
where rn <= 10 
order by Month, Sales desc 

（應該在SQLServer的工作;不能確定有關Sybase）每月

Answer 5

細則十大每月可使用此查詢過

選擇369導出，SUM（銷售）Total_sales，月份爲Monthofyear
from tbl_Merchant
按月組，商家，銷售
按月銷售，銷售描述