--- title: "FirstChild (MDX) | Microsoft Docs" ms.date: 06/04/2018 ms.prod: sql ms.technology: analysis-services ms.custom: mdx ms.topic: reference ms.author: owend ms.reviewer: owend author: minewiskan --- # FirstChild (MDX) Returns the first child of a specified member. ## Syntax ``` Member_Expression.FirstChild ``` ## Arguments *Member_Expression* A valid Multidimensional Expressions (MDX) expression that returns a member. ### Example 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] ``` ## See Also [LastChild (MDX)](../mdx/lastchild-mdx.md) [MDX Function Reference (MDX)](../mdx/mdx-function-reference-mdx.md)