Re: Any way to speed this up? - Mailing list pgsql-performance

From Keith Worthington
Subject Re: Any way to speed this up?
Date
Msg-id 20050407152150.M93433@narrowpathinc.com
Whole thread Raw
In response to Any way to speed this up?  ("Joel Fradkin" <jfradkin@wazagua.com>)
List pgsql-performance
On Thu, 07 Apr 2005 11:13:57 -0400, Joel Fradkin wrote
[snip]
> "  ->  Sort  (cost=393.76..394.61 rows=338 width=48) (actual
> time=62.000..62.000 rows=441 loops=1)"
>
> "        Sort Key: l.locationid"
>
> "        ->  Index Scan using ix_location on tbllocation l
>
> (cost=0.00..379.56 rows=338 width=48) (actual time=15.000..62.000 rows=441
> loops=1)"
>
> "              Index Cond: ('SAKS'::text = (clientnum)::text)"
>
> "  ->  Sort  (cost=59478.03..59909.58 rows=172618 width=75) (actual
> time=46844.000..46985.000 rows=159960 loops=1)"
>
> "        Sort Key: a.locationid"
[snip]
>
> CREATE TABLE tblassociate
[snip]
>
>   CONSTRAINT pk_tblassociate PRIMARY KEY (clientnum, associateid),
>
>   CONSTRAINT ix_tblassociate UNIQUE (clientnum, associatenum)
>
[snip]
>
> Joel Fradkin

Joel,

I am REALLY new at this and struggling to understand EXPLAIN ANALYZE output
but for what it is worth it looks like the sort on a.locationid is taking up a
lot of the time.  I do not see an index on that column.  I would suggest
indexing tblassociate.locationid and seeing if that helps.

Kind Regards,
Keith

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