MS SQL Server Concepts and Programming Question:

If a user defined function is created with parameters, you need pass values to those parameters when calling the function with one of two formats listed below:

expression... function_name(value_1, value_2, ... value_n)...

The tutorial exercise below shows you how to pass values to function parameters:

DROP FUNCTION Welcome;
GO

CREATE FUNCTION Welcome(@url VARCHAR(40))
RETURNS VARCHAR(40)
AS BEGIN
RETURN 'Welcome to '+@url;
END;
GO

PRINT 'Hi there, '+dbo.Welcome('GlobalGuideLine.com');
GO
Hi there, Welcome to GlobalGuideLine.com

PRINT 'Hi there, '+dbo.Welcome('GlobalGuideLine.com');
GO
Hi there, Welcome to GlobalGuideLine.com