On Tue, 2005-03-22 at 14:36 -0500, Alex Turner wrote:
> I will use an index 220-300, but not 200-300.
> ...
> Seq Scan on propmain (cost=0.00..15517.56 rows=6842 width=4) (actual
> time=0.039..239.760 rows=6847 loops=1)
> ...
> Index Scan using propmain_listprice_i on propmain
> (cost=0.00..22395.95 rows=6842 width=4) (actual time=0.084..25.751
> rows=6847 loops=1)
the rows estimates are accurate, so it is not a question of statistics
anymore.
first make sure effective_cache_size is correctly set, and then
if that is not enough, you might try to lower random_page_cost a bit
gnari
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