Re: RES: Improving select peformance

Carlos H. Reimer wrote:
> Hi,
>
> I have changed the view to eliminate the bizarre concatenation conditions
> but even so the response time did not change.

Are you sure you did that?  In the EXPLAIN it's still possible to see
them, for example

>                ->  Nested Loop  (cost=1.34..3409.04 rows=1 width=159)
> (actual time=0.237..32.520 rows=414 loops=1)
>                      Join Filter: ((gra.codtam)::text = ((sub.codite)::text
> || ''::text))
>                      ->  Nested Loop  (cost=1.34..3376.84 rows=28 width=136)
> (actual time=0.226..20.978 rows=414 loops=1)
>                            ->  Hash Join  (cost=1.34..3356.99 rows=28
> width=145) (actual time=0.215..15.225 rows=414 loops=1)
>                                  Hash Cond: ((gra.codcor)::text =
> ((div.codite)::text || ''::text))


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Alvaro Herrera                 http://www.amazon.com/gp/registry/CTMLCN8V17R4
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