| From: | Mark Kirkwood <markir(at)paradise(dot)net(dot)nz> |
|---|---|
| To: | Kevin Brown <blargity(at)gmail(dot)com> |
| Cc: | pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: Simple Join |
| Date: | 2005-12-15 08:15:05 |
| Message-ID: | 43A12609.70208@paradise.net.nz |
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| Thread: | |
| Lists: | pgsql-performance |
Kevin Brown wrote:
> On Wednesday 14 December 2005 18:36, you wrote:
>
>>Well - that had no effect at all :-) You don't have and index on
>>to_ship.ordered_product_id do you? - try adding one (ANALYZE again), and
>>let use know what happens (you may want to play with SET
>>enable_seqscan=off as well).
>
>
> I _DO_ have an index on to_ship.ordered_product_id. It's a btree.
>
Sorry - read right past it!
Did you try out enable_seqscan=off? I'm interested to see if we can get
8.1 bitmap anding the three possibly useful columns together on
ordered_products and *then* doing the join to to_ship.
Cheers
Mark
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