Hi Igor,
thank you, I understand but how do I get each statement to represent a value in the paramaeter list.
So when the user selects named users it will choose the first part of the untion, anonymous the second and all, it just runs all.
Is it possible to give a select statement an alias?
SELECT blah, blah
FROM MyTable
WHERE (your criteria for anonymous) AND (@parameter = 'anonymous' OR @parameter = 'all')
UNION
SELECT blah, blah
FROM MyTable
WHERE (your criteria for named user) AND (@parameter = 'named' OR @parameter = 'all')