Using ranking-function derived column in where clause (SQL Server 2008)

Question

Hoping this is trivial for a SQL-Ninja... Been trying to get the following query working:

This is for SQL Server 2008

SELECT 
    ROW_NUMBER() OVER (ORD         


        

Answer 1

You must move the WHERE operator above the project list where RowNumber column is created. Use a derived table or a CTE:

SELECT * 
  FROM (
   SELECT *, ROW_NUMBER() OVER (...) as RowNumber
   FROM ...) As ...
 WHERE RowNumber = ...

the equivalent CTE is:

WITH cte AS (
SELECT *, ROW_NUMBER() OVER (...) as RowNumber
       FROM ...)
SELECT * FROM cte 
WHERE RowNumber = ...