https://learn.microsoft.com/en-us/sql/relational-databases/tables/tutorial-using-the-hierarchyid-data-type?view=sql-server-ver16
Tutorial: Using the hierarchyid Data Type - SQL Server | Microsoft Learn
Tutorial: Using the hierarchyid Data Type
data typesql servertutorialusingmicrosoft
https://groups.google.com/g/cfaussie/c/_5ZcDpU0ER4
Has anyone used the HierarchyID data type in MS SQLServer?
data typeanyoneusedmssqlserver