How to always find the parent of a calculated member

问题

This seems pretty logical:

WITH 
MEMBER [Date].[Date - Calendar Month].[Calendar Year].&[2013].[LastMth] AS
    IIF(
       Day(Now()) = 1,
       TAIL([Date].[Date - Calendar Month].[Calendar Month],2).Item(1),
       TAIL([Date].[Date - Calendar Month].[Calendar Month],2).Item(0)
       )
SELECT
    NON EMPTY 
    {
        [Date].[Date - Calendar Month].[LastMth],
        [Date].[Date - Calendar Month].[LastMth].PARENT
    }
    ON COLUMNS,
    NON EMPTY 
    [Measures].[BillableIncome]
    ON ROWS 
FROM [ourCube]

I specify the parent of the calculated member in the first line of the script - so my member LastMth has 2013 as it's parent and sure enough the result set throws back the total for 2013 as well as the last month.

If I make it's parent 2012 in the first line:

 WITH 
    MEMBER [Date].[Date - Calendar Month].[Calendar Year].&[2012].[LastMth] AS
        IIF(
...
...

...it doesn't worry about where I get LastMth from (2013) and makes 2012 it's parent as instructed - slightly bizarre but understandable behaviour.

The following returns an empty set for the parent - I thought the parent would be [Date].[Date - Calendar Month].[(All)]? What is the parent and how can I expose it's value?

WITH 
MEMBER [Date].[Date - Calendar Month].[LastMth] AS
    IIF(
       Day(Now()) = 1,
       TAIL([Date].[Date - Calendar Month].[Calendar Month],2).Item(1),
       TAIL([Date].[Date - Calendar Month].[Calendar Month],2).Item(0)
       )
SELECT
    NON EMPTY 
    {
        [Date].[Date - Calendar Month].[LastMth],
        [Date].[Date - Calendar Month].[LastMth].PARENT
    }
    ON COLUMNS,
    NON EMPTY 
        [Measures].[BillableIncome]
    ON ROWS 
FROM [ourCube]

回答1:

If you do not state a parent for a calculated member, it gets a sibling of the All member, not a child of it.

As an aside: I found that most client tools - including Excel - do not expect All to have siblings, and thus if you create a calculated member in the calculation script (as opposed to just defining it in the WITH clause of a statement), do not display these, even if they are instructed to show calculated members.

来源：https://stackoverflow.com/questions/20269303/how-to-always-find-the-parent-of-a-calculated-member

标签

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