How do I generate row number without using rownum() in sql server

Question

I have the following table:

CREATE table prd
(
prdid varchar(10)
)
insert into prd values ('prd1011'),('prd1023'),('prd4532'),('prd2341')

I need to return the same with rownumber without using ROWNUM() built in function. Is that possible?

Answer 1

select *, (
    select count(*)
    from prd p2
    where p1.prdid >= p2.prdid
) as cnt
from prd p1

Answer 2

You've failed to specify SQL Server version or motivation for the request.

A SQL Server 2012+ method

SELECT prdid,
       COUNT(*) OVER (ORDER BY prdid ROWS UNBOUNDED PRECEDING)
FROM prd

SQL Fiddle