User-Defined Function (UDF) to retrieve version information for the current installation of SQL Server - Releases · rdomene/sql-server-user-defined-functions ...

What Is Tsql Function? Users-defined functions are Transact-SQL or CLRS (common language runtime) routines that take parameters, perform actions, such as complex calculations, and return the results ...

In addition, developers are able to define SQL Server user-defined types, stored procedures and functions using Common Language Runtime (CLR) languages.