Question

我想弄清楚的是如何自动计算每个月最后4个月到当月的资助日期总数。例如，因为它是六月我想要2月，3月，4月和5月的资金账户。这是我现在的编解码器，似乎无法弄明白。

DECLARE @Year int

set @Year = 2013

SELECT  
   d.name, a.dealer_code, b.last_name, b.city, b.state, b.phone
   , COUNT(CASE WHEN  MONTH(c.Funded_date) = 1 THEN 1 ELSE NULL END) January
   , COUNT(CASE WHEN  MONTH(c.Funded_date) = 2 THEN 1 ELSE NULL END) February
   , COUNT(CASE WHEN  MONTH(c.Funded_date) = 3 THEN 1 ELSE NULL END) March
   , COUNT(CASE WHEN  MONTH(c.Funded_date) = 4 THEN 1 ELSE NULL END) April
   , COUNT(CASE WHEN  MONTH(c.Funded_date) = 5 THEN 1 ELSE NULL END) May
   , COUNT(CASE WHEN  MONTH(c.Funded_date) = 6 THEN 1 ELSE NULL END) June
   , COUNT(CASE WHEN  MONTH(c.Funded_date) = 7 THEN 1 ELSE NULL END) July
   , COUNT(CASE WHEN  MONTH(c.Funded_date) = 8 THEN 1 ELSE NULL END) August
   , COUNT(CASE WHEN  MONTH(c.Funded_date) = 9 THEN 1 ELSE NULL END) September
   , COUNT(CASE WHEN  MONTH(c.Funded_date) = 10 THEN 1 ELSE NULL END) October
   , COUNT(CASE WHEN  MONTH(c.Funded_date) = 11 THEN 1 ELSE NULL END) November
   , COUNT(CASE WHEN  MONTH(c.Funded_date) = 12 THEN 1 ELSE NULL END) December
FROM 
   tdealer a 
JOIN 
   tContact b ON a.contact_id = b.contact_id 
JOIN 
   tContract c ON a.dealer_id = c.dealer_id 
JOIN 
   tCompany d ON c.company_id = d.company_id
WHERE 
   a.dealer_code = '0003594' and YEAR(c.Funded_date) = @Year
GROUP BY
   d.name,
   a.dealer_code,
   b.last_name,
   b.city, b.state, b.phone

Answer 1

如果您要弄清楚的是如何将其限制为过去4个月（并假设使用SQL Server），则可以将WHERE条件更改为：

WHERE a.dealer_code = '0003594' 
  AND YEAR(c.Funded_date) = @Year
  AND c.Funded_date >= DATEADD(MONTH, DATEDIFF(MONTH, 0, GETDATE())-4, 0) 
  AND c.Funded_date < DATEADD(MONTH, DATEDIFF(MONTH, -1, GETDATE())-1, 0)

Answer 2

您没有提供太多信息或回复评论中的问题，这是我最好的猜测：

SELECT
   d.name, a.dealer_code, b.last_name, b.city, b.state, b.phone, 
   MONTH(c.FundedDate), 
   COUNT(c.FundedDate) as RecordCount

FROM 
   {... same as existing ...}

WHERE 
   a.dealer_code = '0003594' and YEAR(c.Funded_date) = @Year
   and MONTH(GETDATE()) - MONTH(c.FundedDate) between 1 and 4

GROUP BY
   d.name,
   a.dealer_code,
   b.last_name,
   b.city, b.state, b.phone,
   MONTH(c.FundedDate)

Answer 3

试试这个，可能有语法错误。

DECLARE @CurrentMonth int

SET @CurrentMonth = MONTH(GETDATE())


SELECT  
   d.name, a.dealer_code, b.last_name, b.city, b.state, b.phone
   , COUNT(CASE WHEN  MONTH(c.Funded_date) = @CurrentMonth THEN 1 ELSE NULL END) CurrentMonth
   , COUNT(CASE WHEN  MONTH(DATEADD(M,1,c.Funded_date)) = @CurrentMonth THEN 1 ELSE NULL END) PrevMonth
   , COUNT(CASE WHEN  MONTH(DATEADD(M,2,c.Funded_date)) = @CurrentMonth  THEN 1 ELSE NULL END) CurrentMonth-2
   , COUNT(CASE WHEN  MONTH(DATEADD(M,3,c.Funded_date)) = @CurrentMonth THEN 1 ELSE NULL END) CurrentMonth-3
FROM 
   tdealer a 
JOIN 
   tContact b ON a.contact_id = b.contact_id 
JOIN 
   tContract c ON a.dealer_id = c.dealer_id 
JOIN 
   tCompany d ON c.company_id = d.company_id
WHERE 
   a.dealer_code = '0003594' and DATEDIFF(M, c.Funded_date, GETDATE()) <= 4
GROUP BY
   d.name,
   a.dealer_code,
   b.last_name,
   b.city, b.state, b.phone

计算日期月份SQL

3 个答案: