矩阵列的SSRS方差

Question

我正在尝试生成每周SSRS报告，以显示与前一时期相比的 WTD ， MTD 和 YTD 值。

我已使用以下查询成功构建了报告：

WITH CTE
 AS (
 SELECT *,
        ReportPeriod = 'Current WTD',
        ColumnOrder = 1
 FROM SALES_FLASH_DAILY
 WHERE CompletedDate BETWEEN @CurrentWeekStart AND @Today
 UNION ALL
 SELECT *,
        ReportPeriod = 'Prior WTD',
        ColumnOrder = 2
 FROM SALES_FLASH_DAILY
 WHERE CompletedDate BETWEEN @PrevWeekStart AND @DayinPrevWeek
 UNION ALL
 SELECT *,
        ReportPeriod = 'Current MTD',
        ColumnOrder = 3
 FROM SALES_FLASH_DAILY
 WHERE CompletedDate BETWEEN @CurrentMonthStart AND @Today
 UNION ALL
 SELECT *,
        ReportPeriod = 'Prior MTD',
        ColumnOrder = 4
 FROM SALES_FLASH_DAILY
 WHERE CompletedDate BETWEEN @PrevMonthStart AND @DayinPrevMonth
 UNION ALL
 SELECT *,
        ReportPeriod = 'Current YTD',
        ColumnOrder = 5
 FROM SALES_FLASH_DAILY
 WHERE CompletedDate BETWEEN @CurrentYearStart AND @Today
 UNION ALL
 SELECT *,
        ReportPeriod = 'Prior YTD',
        ColumnOrder = 6
 FROM SALES_FLASH_DAILY
 WHERE CompletedDate BETWEEN @PrevYearStart AND @DayinPrevYear)

 SELECT * FROM CTE;

但是，我现在想要添加列来捕获Matrix末尾每个句点的方差。

这是我正在使用的数据集的示例：

这是报告结构（报告的一部分）：

这是我想要创建的输出：

有谁知道如何做到这一点？它可以在SSRS中动态完成，还是需要执行自联接以将ReportPeriodSales作为列？

谢谢。