Re: Query optimization help

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Hi,

2011/8/30 Szymon Kosok <szymon@xxxxxx>:
> 2011/8/30 Ondrej Ivanič <ondrej.ivanic@xxxxxxxxx>:
>> Could you please re-post your explain using this web site:
>> http://explain.depesz.com/ and post links to Stackoverflow question?
>
> Here it is: http://explain.depesz.com/s/Iaa
>
>> - try to disable nested loop join (set enable_nestloop=off)

Thanks, I would try to "materialise" spoleczniak_tablica table. Your
query looks like this:
select ...
from spoleczniak_tablica
inner join ...
where ...
order by spoleczniak_tablica.id desc
limit 21

So I would rewrite your query like this:
select ...
from (
     select ...
     from spoleczniak_tablica
     where ....
     order by spoleczniak_tablica.id desc
     limit 21
) as x
inner join ...


-- 
Ondrej Ivanic
(ondrej.ivanic@xxxxxxxxx)

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