Question

我有数据，我试图按自定义的季度间隔进行分组。数据是每日和UTC时间。我可以很容易地按月分解，但我很难在季度级别做到这一点。例如，财务日期需要从2017年3月22日开始，运行3个月。因此，该季度应该是3/22 / 17-6 / 22/17，并且也可以拉动所有其他月份。

我将这段代码用于月份级别：

        CASE    WHEN
        CAST(DATEADD(HOUR, -4, c.dateUTC) AS DATE) BETWEEN DATEFROMPARTS(DATEPART(YEAR, DATEADD(MONTH, -1, CAST(DATEADD(HOUR, -4, c.dateutc) AS DATE))), DATEPART(MONTH, DATEADD(MONTH, -1, CAST(DATEADD(HOUR, -4, c.dateUTC) AS DATE))), 22)
        AND DATEFROMPARTS(DATEPART(YEAR, CAST(DATEADD(HOUR, -4, c.dateUTC) AS DATE)), DATEPART(MONTH, CAST(DATEADD(HOUR, -4, c.dateUTC) AS DATE)), 21)
        THEN DATENAME(MONTH, CAST(DATEADD(HOUR, -4, c.dateUTC) AS DATE)) + ' ' + CAST(DATEPART(YEAR, CAST(DATEADD(HOUR, -4, c.dateUTC) AS DATE)) AS VARCHAR(4))
        WHEN CAST(DATEADD(HOUR, -4, c.dateUTC) AS DATE) > DATEFROMPARTS(DATEPART(YEAR, CAST(DATEADD(HOUR, -4, c.dateUTC) AS DATE)), DATEPART(MONTH, CAST(DATEADD(HOUR, -4, c.dateUTC) AS DATE)), 21)
        THEN DATENAME(MONTH, DATEADD(MONTH, 1, CAST(DATEADD(HOUR, -4, c.dateUTC) AS DATE))) + ' ' + CAST(DATEPART(YEAR, DATEADD(MONTH, 1, CAST(DATEADD(HOUR, -4, c.dateUTC) AS DATE))) AS VARCHAR(4))
        END AS FiscalMonth

但很难修改为具有正确的日期和代码的季度。是否有一个简单的修复方法可以将现有查询更改为季度级别。

Answer 1

这可能有用，这个想法只是将输入日期转换为从1月1日开始的标准化比例。仅从发布的语法我假设SQL Server，但您应该添加RDBMS标记。

离。

SELECT '2017-03-22' AS Custom_strt,
       inputDate,
       DATEADD
         ( day,
           DATEDIFF(day, Custom_strt, Q1_strt),
           DATEADD(year, DATEDIFF(year,Q1_strt, inputDate), inputDate)
         ) AS normalizedDate, 
       DATE '2017-01-01' AS Q1_strt,
       DATEADD(month, 3, Q1_strt) AS Q1_end,
       DATEADD(day, 1, Q1_end) AS Q2_strt,
       ...
       DATEADD(month, 3, Q4_strt) AS Q4_end,
       CASE WHEN normalizedDate BETWEEN Q1_strt AND Q1_end THEN 'Q1'
            WHEN normalizedDate BETWEEN Q2_strt AND Q2_end THEN 'Q2'
            WHEN normalizedDate BETWEEN Q3_strt AND Q3_end THEN 'Q3'
            WHEN normalizedDate BETWEEN Q4_strt AND Q1_end THEN 'Q4'
        END AS fiscal_quarter
  FROM SomeTable

sql中的自定义季度日期

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