SQL Server 2008 supports a set of methods for the Transact-SQL hierarchyid data type and the common language runtime (CLR) SqlHierarchyId class. For more information, see Working with hierarchyid Data. The topics in this section provide the syntax and examples for each hierarchyid data type method.
GetAncestor (Database Engine)
GetDescendant (Database Engine)
GetLevel (Database Engine)
GetRoot (Database Engine)
IsDescendantOf (Database Engine)
Parse (Database Engine)
Read (Database Engine)
GetReparentedValue (Database Engine)
ToString (Database Engine)
Write (Database Engine)