总结时如何在案例陈述中排除

Question

在过滤数据时，我遇到了一年中的财务周以及周开始日期。

这里是一个示例数据，其中在一个星期的开始日期中，一年中有2个不同的财政周。

SELECT
    WEEK_COMMENCING
   ,FISCAL_WEEK_OF_YEAR
   ,[issue_date]
   ,sum([issue_value])

FROM [DM_Pharmacy].[dbo].[daily_issue_summary]
JOIN [DM_Common].[dbo].[REFERENCE_DATE_PROFILE]
    ON issue_date = DATE
WHERE [issue_date] >= '2017-03-30'
AND [issue_date] <= '2018-11-22'
AND FISCAL_WEEK_OF_YEAR IN ('01', '53')
GROUP BY WEEK_COMMENCING
        ,FISCAL_WEEK_OF_YEAR
        ,[issue_date],[issue_value]
ORDER BY [issue_date] ASC




+-------------------------+---------------------+------------+-------------+
|     WEEK_COMMENCING     | FISCAL_WEEK_OF_YEAR | issue_date | issue_value |
+-------------------------+---------------------+------------+-------------+
| 2017-03-27 00:00:00.000 |                  53 | 2017-03-30 |          10 |
| 2017-03-27 00:00:00.000 |                  53 | 2017-03-31 |          15 |
| 2017-03-27 00:00:00.000 |                  01 | 2017-04-01 |           4 |
| 2017-03-27 00:00:00.000 |                  01 | 2017-04-02 |           6 |
| 2018-03-26 00:00:00.000 |                  53 | 2018-03-26 |           2 |
| 2018-03-26 00:00:00.000 |                  53 | 2018-03-27 |           2 |
| 2018-03-26 00:00:00.000 |                  53 | 2018-03-28 |           2 |
| 2018-03-26 00:00:00.000 |                  53 | 2018-03-29 |           2 |
| 2018-03-26 00:00:00.000 |                  53 | 2018-03-30 |           2 |
| 2018-03-26 00:00:00.000 |                  53 | 2018-03-31 |           2 |
| 2018-03-26 00:00:00.000 |                  01 | 2018-04-01 |           2 |
+-------------------------+---------------------+------------+-------------+

---

这是我的简化案例声明

我正在努力实现：

如果[WEEK_COMMENCING]在 @PreviousYear_Start 或 @CurrentYear_Start

中有2个FISCAL_WEEK_OF_YEAR

然后仅在FISCAL_WEEK_OF_YEAR = 01时求和，而忽略FISCAL_WEEK_OF_YEAR = 53

Declare @PreviousYear_Start DATE = '2017-03-27';
Declare @PreviousYear_End   DATE = '2018-03-26';
Declare @CurrentYear_Start  DATE = '2018-03-26';
Declare @CurrentYear_End    DATE = '2018-09-30';

SELECT TOP 10
    [drug_name]

   ,SUM(CASE
        WHEN [WEEK_COMMENCING] >= @PreviousYear_Start AND
            [WEEK_COMMENCING] <= @PreviousYear_End THEN [issue_value]
    END) AS prev_yr
   ,SUM(CASE
        WHEN [WEEK_COMMENCING] >= @CurrentYear_Start AND
            [WEEK_COMMENCING] <= @CurrentYear_End THEN [issue_value]
    END) AS this_yr

FROM [DM_Pharmacy].[dbo].[weekly_issue_summary]
LEFT JOIN [costcentre_groups_staging]
    ON [weekly_issue_summary].costcentre = [costcentre_groups_staging].costcentre
GROUP BY [drug_name]
ORDER BY SUM(CASE
    WHEN [WEEK_COMMENCING] >= @CurrentYear_Start AND
        [WEEK_COMMENCING] <= @CurrentYear_End THEN [issue_value]
END) DESC