Question

我有以下SQL查询，显示给定日期的12个月摘要报告。无论给定日期如何，输出显示从1月到12月。我希望结果从给定日期的月份开始。

如果给定日期是'2016-05-01'，我希望输出像这样

May 16 |June 16| July 16| ........... | Jan 17 | Feb 17 | March 17 | April 17 |

我怎样才能做到这一点？
有人建议吗？

SELECT Name,SUM(Amount) AS PremiumTot,TotType,
sum(case when month(Dates) =  1 then Tot else 0 end) Jan,
sum(case when month(Dates) =  2 then Tot else 0 end) Feb,
sum(case when month(Dates) =  3 then Tot else 0 end) March,
sum(case when month(Dates) =  4 then Tot else 0 end) April,
sum(case when month(Dates) =  5 then Tot else 0 end) May,
sum(case when month(Dates) =  6 then Tot else 0 end) June,
sum(case when month(Dates) =  7 then Tot else 0 end) July,
sum(case when month(Dates) =  8 then Tot else 0 end) Aug,
sum(case when month(Dates) =  9 then Tot else 0 end) Sep,
sum(case when month(Dates) =  10 then Tot else 0 end) Oct,
sum(case when month(Dates) =  11 then Tot else 0 end) Nov,
sum(case when month(Dates) =  12 then Tot else 0 end) Dece

FROM
(
  SELECT InvoiceMasterID,Dates ,Name,CompanyCommission AS Tot ,0 AS Expences,Amount,1 as TotType
  FROM CommissionView

  UNION ALL

SELECT InvoiceMasterID,Dates,Name, 0 AS Tot ,-AgentCommission AS Expences,Amount,2 as TotType
  FROM CommissionViewCredit
) a
  WHERE Dates between @fromDates AND Datesadd(yy,1,@fromDates)
  GROUP BY Name,TotType

Answer 1

好像，你想要转移数据。所以，使用PIVOT表！

如果要从给定日期创建动态列，请使用CTE（公用表格式）！

--declare variables for given date range
DECLARE @startDate DATE = '2016-05-01'
DECLARE @endDate DATE = DATEADD(mm,11,@startDate)
--declare variable to store months as: [month1], [month2], [etc.] 
DECLARE @Months VARCHAR(1000) = ''
--use cte to create range of dates
;WITH MyDates AS
(
    SELECT @startDate AS MyDate
    UNION ALL
    SELECT DATEADD(mm,1,MyDate) AS MyDate 
    FROM MyDates
    WHERE MyDate<@endDate 
)
SELECT @Months = STUFF((SELECT '],['  + CONVERT(VARCHAR(7), MyDate, 121)
                       FROM MyDates
                       FOR XML PATH('')), 1, 2, '') + ']'

--PRINT @Months: 
-- prints: [2016-05],[2016-06], ... ,[2017-04]

DECLARE @qry NVARCHAR(MAX) = ''

SET @qry = N'SELECT ' + @Months +
' FROM ( ' +
     ' SELECT CONVERT(VARCHAR(7), Dates, 121) AS MyDate, CompanyCommission AS Tot ' +
     'FROM CommissionView ' +
') AS DT ' +
'PIVOT (SUM(Tot) FOR MyDate IN(' + @Months + ')) AS PT'
EXEC (@qry)

有关详细信息，请参阅：
Dynamic PIVOT
Pivots with dynamic columns
CAST and CONVERT

祝你好运！

从给定月份开始的SQL年摘要

1 个答案: