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PeriodsToDate (MDX)

Returns a set of sibling members from the same level as a given member, starting with the first sibling and ending with the given member, as constrained by a specified level in the Time dimension.


PeriodsToDate( [ Level_Expression [ ,Member_Expression ] ] )

Level_Expression

A valid Multidimensional Expressions (MDX) expression that returns a level.

Member_Expression

A valid Multidimensional Expressions (MDX) expression that returns a member.

Within the scope of the specified level, the PeriodsToDate function returns the set of periods on the same level as the specified member, starting with the first period and ending with specified member.

  • If a level is specified, the current member of the hierarchy is inferred hierarchy.CurrentMember, where hierarchyis the hierarcy of the specified level.

  • If neither a level nor a member is specified, the level is the parent level of the current member of the dimension of type Time (Time.CurrentMember).

PeriodsToDate( Level_Expression, Member_Expression ) is functionally equivalent to the following MDX expression:

TopCount(Descendants(Ancestor(Member_Expression, Level_Expression), Member_Expression.Level), 1):Member_Expression

Examples

The following example returns the sum of the Measures.[Order Quantity] member, aggregated over the first eight months of calendar year 2003 that are contained in the Date dimension, from the Adventure Works cube.

WITH MEMBER [Date].[Calendar].[First8Months2003] AS
    Aggregate(
        PeriodsToDate(
            [Date].[Calendar].[Calendar Year], 
            [Date].[Calendar].[Month].[August 2003]
        )
    )
SELECT 
    [Date].[Calendar].[First8Months2003] ON COLUMNS,
    [Product].[Category].Children ON ROWS
FROM
    [Adventure Works]
WHERE
    [Measures].[Order Quantity]

The following example aggregates over the first two months of the second semester of calendar year 2003.

WITH MEMBER [Date].[Calendar].[First2MonthsSecondSemester2003] AS
    Aggregate(
        PeriodsToDate(
            [Date].[Calendar].[Calendar Semester], 
            [Date].[Calendar].[Month].[August 2003]
        )
    )
SELECT 
    [Date].[Calendar].[First2MonthsSecondSemester2003] ON COLUMNS,
    [Product].[Category].Children ON ROWS
FROM
    [Adventure Works]
WHERE
    [Measures].[Order Quantity]
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