Question

This is a followup on the question:
ASP.NET next/previous buttons to display single row in a form

As it says on the page above, theres a previous/next button on the page, that retrieves a single row one at a time.

Totally there’s ~500,000 rows.

When I “page” through each subscribtion number, the form gets filled with subscriber details. What approach should I use on the SQL server?

Using the ROW_NUMBER() function seems a bit overkill as it has to number all ~500.000 rows (I guess?), so what other possible solutions are there?

Thanks in advance!

Answer 1

ROW_NUMBER() is probably your best choice.

From this MSDN article: http://msdn.microsoft.com/en-us/library/ms186734.aspx

WITH OrderedOrders AS
(
    SELECT SalesOrderID, OrderDate,
    ROW_NUMBER() OVER (ORDER BY OrderDate) AS 'RowNumber'
    FROM Sales.SalesOrderHeader 
) 
SELECT * 
FROM OrderedOrders 
WHERE RowNumber BETWEEN 50 AND 60;

And just subsititute 50 and 60 with a parameter for the row number you want.