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?
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