aggregate - 较低级别的 MDX 聚合

Question

我需要在上层聚合上层，并过滤来自下层的成员。它用于报告每年的销售额，并在特定月份进行过滤。这是 FoodMart 数据库和具有级别的 Product Dimension 的示例：

1. [产品系列]
2. 【产品部】

---

MDX：

WITH
MEMBER [Measures].[Unit Sales Calculated] AS
    Aggregate(
        Intersect(
            Descendants(
                [Product].CurrentMember,
                [Product].[Product Department],
                SELF
            ),
            [Filtered Product Department]
        ),
        [Measures].[Unit Sales]
    )
SET [Filtered Product Department] AS
Except(
    [Product].[Product Department].Members,
    [Product].[Drink].[Alcoholic Beverages]
)
SELECT
 NON EMPTY [Measures].[Unit Sales Calculated] ON COLUMNS,
 NON EMPTY [Product].[Product Family].Members) ON ROWS
FROM [Sales]

此解决方案有效，但性能相当差。有没有更好的方法来编写这个查询？