Updated: March 2, 2016
Returns the first child of a specified member.
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].&.FirstChild ON 0 FROM [Adventure Works]