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GetRoot (Database Engine)

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Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance

Returns the root of the hierarchy tree. GetRoot() is a static method.

Syntax

-- Transact-SQL syntax  
hierarchyid::GetRoot ( )   

-- CLR syntax  
static SqlHierarchyId GetRoot ( )

Return Types

SQL Server return type:hierarchyid

CLR return type:SqlHierarchyId

Remarks

Used to determine the root node in a hierarchy tree.

Examples

A. Transact-SQL example

The following example returns the root of the hierarchy tree:

SELECT OrgNode.ToString() AS Text_OrgNode, *  
FROM HumanResources.EmployeeDemo  
WHERE OrgNode = hierarchyid::GetRoot()

B. CLR example

The following code snippet calls the GetRoot() method:

SqlHierarchyId.GetRoot()

See also

hierarchyid Data Type Method Reference
Hierarchical Data (SQL Server)
hierarchyid (Transact-SQL)