GetRoot (Database Engine)

**APPLIES TO:** SQL Server (starting with 2008) Azure SQL Database Azure SQL Data Warehouse Parallel Data Warehouse

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)