<https://www.mssqltips.com/sqlservertip/1692/using-schema-binding-to-improve-sql-server-udf-performance/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.mssqltips.com/sqlservertip/1692/using-schema-binding-to-improve-sql-server-udf-performance/>