以下是有關於 Hierarchies in SQL Server 2008 ,在MSDN上的一些文章鏈接:
hierarchyid Data Type Method Reference
http://msdn.microsoft.com/en-us/library/bb677193(v=SQL.100).aspx
Creating and Managing Data in a Hierarchical Table
http://msdn.microsoft.com/en-us/library/bb677270(v=SQL.100).aspx