I was trying to test my patch to do posix_fadvise to speed up bitmap heap
scans (with disappointing results so far) and ran into a bit of a gotcha. I'm
not sure where this should be documented but it probably should be somewhere.
In order to test bitmap heap scan I had to build an array and use
Gregory Stark [EMAIL PROTECTED] writes:
The solution to this would analogous to what we did to count(). We would need
to add a field to ArrayMetaState which is stored in fn_extra to remember the
last array returned. Then if array_push notices it has been called from an
aggregate context it can
Hello
select count(*)
from huge
where h = any ((select arrayize( (1+random()*3)::integer )
from generate_series(1,1000)
)::integer[])
select array(select (1+random()*3):: integer from
generate_series(1,4));
Time: 111,807 ms
