Question

我是一个非常新的SQL用户（我正在使用Microsoft SQL Server 2012）并且刚刚开始使用CASE。我的最终目标是为每位客户提供1 ScoreDecile。在下面的示例中，我已经能够创建CASE语句来识别ScoreDecile，但由于我的数据文件是每月（时间范围是1年），我显然为每个客户获得12个不同的分数。如何从最近一个月获得ScoreDecile？非常感谢你的帮助！

SELECT 
    A.household_id
    ,SUM (a.contacted) AS Contacted
    ,CASE 
        WHEN (a.[Score] > 0.0740734327 AND a.[Score] < 1) THEN '1'
        WHEN (a.[Score] > 0.051522993 AND a.[Score] < 0.0740722882) THEN '2'
        WHEN (a.[Score] > 0.0410156448 AND a.[Score] < 0.051522951) THEN '3'
        WHEN (a.[Score] > 0.0344048467 AND a.[Score] < 0.0410156323) THEN '4'
        WHEN (a.[Score] > 0.029530965 AND a.[Score] < 0.0344046968) THEN '5'
        WHEN (a.[Score] > 0.0254069538 AND a.[Score] < 0.0295309522) THEN '6'
        WHEN (a.[Score] > 0.021865371 AND a.[Score] < 0.0254069523) THEN '7'
        WHEN (a.[Score] > 0.0185329571 AND a.[Score] < 0.0218653642) THEN  '8'
        WHEN (a.[Score] > 0.0151799201 AND a.[Score] < 0.0185329032) THEN '9'  
        WHEN (a.[Score] > 0.0011824404 AND a.[Score] < 0.0151796708) THEN '10'
    END AS 'ScoreDecile'
INTO
    #temp2
FROM
    [TABLE_A] A
LEFT OUTER JOIN 
    #TEMP B ON A.customerid = b.customerid
WHERE 
    A.[date] BETWEEN '2014-04-14' AND '2015-03-15'
GROUP BY 
    a.household_id, a.score
HAVING 
    SUM (a.contacted) = 0
ORDER BY 
    household_id

Answer 1

如果您想获取当前日历月的数据，我猜您需要替换

A.[date] BETWEEN '2014-04-14' AND '2015-03-15'

带

A.[date] > DATEADD(MONTH, DATEDIFF(MONTH, 0, GETDATE()), 0)

我怎样才能在我的案例陈述中仅获得最新日期

1 个答案: