Efficient way of getting @@rowcount from a query using row_number

Question

I have an expensive query using the row_number over() functionality in SQL Server 2005. I return only a sub list of those records as the query is paginated. However, I wou

Answer 1

Check out the COUNT(*) aggregate when used with OVER(PARTITON BY..), like so:

    SELECT
     ROW_NUMBER() OVER(ORDER BY object_id, column_id) as RowNum
    , COUNT(*) OVER(PARTITION BY 1) as TotalRows
    , * 
    FROM master.sys.columns

This is IMHO the best way to do it without having to do two queries.