SQL Server 2005/2008 Group By statement with parameters without using dynamic SQL?

Question

Is there a way to write SQL Server Stored Procedure which to be strongly typed ( i.e. returning known result set of columns ) and having its group statement to be dynamic. <

Answer 1

You can group on a constant which might be useful

SELECT
    SUM(Column0),
    CASE @MyVar WHEN 'Column1' THEN Column1 ELSE '' END AS MyGrouping
FROM
    Table1
GROUP BY
    CASE @MyVar WHEN 'Column1' THEN Column1 ELSE '' END

Edit: For datatype mismatch and multiple values and this allows you to group on both columns...

SELECT
    SUM(Column0),
    CASE @MyVar WHEN 'Column1' THEN Column1 ELSE NULL END AS Column1,
    CASE @MyVar WHEN 'Column2' THEN Column2 ELSE NULL END AS Column2
FROM
    Table1
GROUP BY
    CASE @MyVar WHEN 'Column1' THEN Column1 ELSE NULL END,
    CASE @MyVar WHEN 'Column2' THEN Column2 ELSE NULL END