Returns the first child of a specified member.
Member_Expression.FirstChild
A valid Multidimensional Expressions (MDX) expression that returns a member.
The following query returns the first child of fiscal year 2003 in the Fiscal hierarchy, which is the first semester of Fiscal Year 2003.
SELECT [Date].[Fiscal].[Fiscal Year].&[2003].FirstChild ON 0 FROM [Adventure Works]
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