orcale -> db2 query question

[VJ]

Hello,

A quick question of the DB guru's here...

What is the equivalent in db2 (iseries) for the sql command:

first_value(s.a) over(partition by s.b, s.c order by s.b) as start_loc

(part of the select statement of a query)
Error message occurs at the first_value...

Thanks!


Jörg