CLR functions that perform string manipulation and substring extraction perform very well in SQL Server.

For a wholly numeric one, the kind is 1; for other ones, it's kind 2. When retrieving data that you want to sort, order by the kind of serial, then the serial - e.g. SELECT * FROM tblFoo ORDER BY ...

The stored procedure was performing a calculation on a SQL Server column of type nvarchar (50), using the SQL Server ISNUMERIC function to determine which text values could safely be included in the ...