Using SQL Server 2012 and the .NET Framework, you can write both scalar (single-valued) and table-valued user-defined functions in managed code. Scalar functions are the easier of the two, so we look at those first.
In SSDT, right-click your SQLCLR project in the Solution Explorer and select Add, Add New Function. Next, name this new class
XSLT, and when it opens in the code editor, rename its default method to
XSLTransform because that’s what it is going to do—transform the content of an
xml-typed variable using XSLT, using a stylesheet also stored in an
xml data type lets you take advantage of server-side storage of XML, so why not leverage that same technology to ...