NULLS FIRST|LAST doesn't work on Postgres Plus Advanced Server 8.3R2 ?

Hello,
I installed Postgres Plus Advanced Server 8.3R2 (for its Oracle compatibility reasons)
It seems the function "NULLS FIRST" or "NULLS LAST" doesn't work ("select a.column from table a order by a.column ASC NULLS FIRST).
I installed Postgres Plus Standard Server 8.4 (to test this functionality) and there is works fine.
Is this normal ?
Thanks,
Hans Vandewiele

Currently 8.3R2 does not have "NULLS FIRST". However, this feature would be available in 8.4AS.

Also, you can use UNION All to control the Null behavior as given below:

Thank you very much for the answer.
In the mean while I found another "work around" with :

select datum from table
order by nvl(datum,'01-01-0000')

Could be helpfull for someone ?

Hans