Hannu Krosing wrote:
> On Thu, 2009-01-22 at 02:33 +0300, Igor Katson wrote:
>
>
>> So to say, give me the list of friends (not only their ID's, but all the
>> needed columns!) of given individual, which are in a given group. That
>> seems ok without plproxy, but with using it, I can't imagine how can I
>> form a nice query, or a function (or a set of plpgsql + plproxy
>> functions) to do the job.
>>
>
> You need to do it in two steps - first run a query on the partition the
> user is in to get list of friends ids, then run a second RUN ON ALL
> query with
>
> WHERE f.friend.id in (list of ids from f1) AND f.group_id = $2
>
> to gather all friend info in parallel
>
>
I was thinking about that. But I don't understand, how can I pass the
list of id's. Should I turn the output of a select into an array? How
then? What if the array gets hundreds of items long?