On Fri, Apr 3, 2009 at 9:32 AM, Matthew Wakeling <matt...@flymine.org> wrote:
> genes = '{}';
> next_new = 1;
> FOR loc IN SELECT location.* FROM location, gene WHERE location.subjectid =
> gene.id ORDER BY objectid, intermine_start, intermine_end LOOP
> genes[next_new] = loc;
> IF (next_new % 10000 = 0) THEN
> RAISE NOTICE 'Scanned % gene locations', next_new;
> END IF;
> next_new = next_new + 1;
> END LOOP;
> genes_size = coalesce(array_upper(genes, 1), 0);
> RAISE NOTICE 'Scanned % gene locations', genes_size;
>
> For 200,000 rows it takes 40 minutes.
>
> So, is there a way to dump the results of a query into an array quickly in
> plpgsql, or alternatively is there a way to read two results streams
> simultaneously?
try this:
select array(SELECT location.* FROM location, gene WHERE
location.subjectid = gene.id ORDER BY objectid, intermine_start,
intermine_end)) into genes;
merlin
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