Sql server 如何在SQLServer2008中使用前几个月的总和获取月度总和
我编写了一个sql查询,以获取总活动客户数Sql server 如何在SQLServer2008中使用前几个月的总和获取月度总和,sql-server,Sql Server,我编写了一个sql查询,以获取总活动客户数 SELECT Cast((Datepart(year,[p].Transdate)) as varchar(50)) + '-' + Cast((Datepart(Month,[p].Transdate)) as varchar(50)) AS [Month/Year] , Count(Distinct([c].CustomerID)) as [Active Customers] FROM CustomerPoi
SELECT
Cast((Datepart(year,[p].Transdate)) as varchar(50)) + '-' +
Cast((Datepart(Month,[p].Transdate)) as varchar(50)) AS [Month/Year] ,
Count(Distinct([c].CustomerID)) as [Active Customers]
FROM
CustomerPoints as [p]
INNER JOIN
Customers AS [c] ON [c].[CustomerID] = [p].[CustomerID]
WHERE
[p].Transdate BETWEEN '2013-01-20' AND '2015-03-05'
AND [c].DistributorID = '1'
AND [p].[TransType] = 'D'
AND [p].[Litres] > '0'
GROUP BY
Cast((Datepart(Year,[p].Transdate)) AS varchar(50)) + '-' +
Cast((Datepart(Month,[p].Transdate)) AS varchar(50))
ORDER BY
Cast((Datepart(Year,[p].Transdate)) AS varchar(50)) + '-' +
Cast((Datepart(Month,[p].Transdate)) AS varchar(50)) ASC
我得到的结果是
Month/year ActiveCustomer
----------------------------------
2013-1 1
2014-3 1
2015-2 1
但我希望输出为上个月的活动成员+本月的活动成员之和
Month/year Active Customer
-------------------------------
2013-1 1
2014-3 2
2015-2 3
使用SUM[您的列]超过ORDER BY[您的列集]
此处的更多信息:试试这个,它会将CustomerPoints表与其自身连接起来,以获得运行总和:
;WITH CTE AS
(
SELECT
dateadd(month, datediff(month, 0, [p].Transdate), 0) monthstart,
count(distinct [p].CustomerID) cnt
FROM
CustomerPoints as [p]
INNER JOIN
Customers AS [c] ON [c].[CustomerID] = [p].[CustomerID]
LEFT JOIN
CustomerPoints as [p2] ON [p2].[Transdate] <= [p].[Transdate]
and [p2].[Transdate] >= '2013-01-20'
WHERE
[p].Transdate BETWEEN '2013-01-20' AND '2015-03-05'
GROUP BY
dateadd(month, datediff(month, 0, [p].Transdate), 0)
)
SELECT convert(char(7), CTE.monthstart, 126) [Month/Year],
sum(CTE2.cnt) ActiveCustomer
FROM CTE
LEFT JOIN
CTE as [CTE2] ON [CTE2].monthstart <= [CTE].monthstart
GROUP BY CTE.monthstart
这不能在sql server 2008中使用。2012年引入了运行金额。如果客户存在一个月,您希望它也包含在下个月的计数中吗?