Avg on count - rewriter error

[mzak]

drop table if exists simple_test;
create table simple_test (
val integer
) with structure = vectorwise;

insert into simple_test values (1);

select avg(cnt)
from (
select count(val) cnt from simple_test
) a;
\g

This sql produces "rewrite error"

[verde02]

Hi,

I have recreated the problem and will make sure that this is sent to the development team.

Cheers,
Dean