Re: query planning different in plpgsql?

Hi,

On Fri, 23 Oct 2009 16:56:36 +0100, Grzegorz Jaśkiewicz
<gryzman(at)gmail(dot)com> wrote:
> On Fri, Oct 23, 2009 at 4:49 PM, Scott Mead
> <scott(dot)lists(at)enterprisedb(dot)com>wrote:
>
>>
>>
>> Do you not have an index on last_snapshot.domain_id?
>>
>
> that, and also try rewriting a query as JOIN. There might be difference
in
> performance/plan.
>
Thanks, it runs better (average 240s, not 700s) with the index. Rewriting
queries
as JOINs does not make any difference.
The last_snapshot is a temp table created earlier in the procedure
and the query in question is preceded with CREATE TEMPORARY TABLE as well,
not a cursor.
I still do not get why it performs differently inside the procedure.
Is there any way to see what planning decisions were made?

Best regards,
Michal

--
I hear and I forget. I see and I believe. I do and I understand.
(Confucius)