You can't define them in T-SQL, although they're accessible in T-SQL stored procedures, UDFs, and other procedural code. These classes (types) can have member functions that are accessible in T-SQL, à ...

However a project with significant logic housed in SQL Server stored procedures or other database code like triggers/functions creates severe constraints to writing unit level tests, especially if ...

Specify this connection argument if you want Pass-Through to operate in Version 6 compatibility mode. When V6 is specified in SQL Pass-Through code, the SAS/ACCESS engine for the DBMS truncates column ...