2008/9/9 Jeff Davis <pgsql@j-davis.com>:
> On Tue, 2008-09-09 at 18:51 +0200, Pavel Stehule wrote:
>> hmm. I solve similar problem in grouping sets :( etc
>>
I have special executor node - feeder, it hold one tuple and others
nodes read from this node. It's usable for hash aggregates.
Pavel
plan is like:
grouping sets
--> seq scan ...
--> hash aggg --> feeder
--> hash agg --> feeder
>
> How did you solve it?
>
> Regards,
> Jeff Davis
>
>
