Re: Slow Query- Bad Row Estimate - Mailing list pgsql-performance

On 10/29/10 1:54 PM, Ozer, Pam wrote:
> "                    ->  Index Scan using dealergroupgeocache_i01 on
> dealergroupgeocache  (cost=0.00..5719.56 rows=9055 width=10) (actual
> time=0.015..87.689 rows=163491 loops=1)"

This appears to be your problem here.

a) when was dealergroupgeocache last ANALYZED?

b) try increasing the stats_target on dealergroupid and regionid, to say
500 and re-analyzing.

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