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How to: Execute a User-Defined Function and Process Return Code (OLE DB)

In this example, a user-defined function is executed, and the return code is printed.

The complete sample code is in the file InitializeAndEstablishConnection_C.cpp. You can download an archive containing the sample from the SQL Server Downloads page on MSDN.

This sample was developed using Microsoft Visual C++ 2005.

Security noteSecurity Note

When possible, use Windows Authentication. If Windows Authentication is not available, prompt users to enter their credentials at run time. Avoid storing credentials in a file. If you must persist credentials, you should encrypt them with the Win32 crypto API.

Example

Here is the sample user-defined function used by the application.

USE AdventureWorks2008R2;
GO
drop function fn_RectangleArea;
GO

CREATE FUNCTION fn_RectangleArea
   (@Width int, 
@Height int )
RETURNS int
AS
BEGIN

   RETURN ( @Width * @Height )
END;
GO