Issue with Window Function in SQL Server 2008 R2

Question

I get an execution error in following SQL script:

SELECT TOP 1 PERCENT
    a.accode, a.voucherdate, a.credit, a.Debit,
    SUM(a.Debit) OVER (ORDER BY [a.acco         


        

Answer 1

The problem is that you need SQL Server 2012 and above. Okay, I added the "and above" for future visitors, but compare 2008 OVER CLAUSE with 2012 OVER CLAUSE.

The 2008 version has this important note:

When used in the context of a ranking window function, can only refer to columns made available by the FROM clause. An integer cannot be specified to represent the position of the name or alias of a column in the select list. cannot be used with aggregate window functions.