| From: | Laurent Laborde <kerdezixe(at)gmail(dot)com> |
|---|---|
| To: | Robert Haas <robertmhaas(at)gmail(dot)com> |
| Cc: | Greg Stark <gsstark(at)mit(dot)edu>, PostgreSQL Performance <pgsql-performance(at)postgresql(dot)org> |
| Subject: | Re: Cost of sort/order by not estimated by the query planner |
| Date: | 2009-12-02 13:20:30 |
| Message-ID: | 8a1bfe660912020520h16678673i1811d9a9fb3ddafc@mail.gmail.com |
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| Lists: | pgsql-hackers pgsql-performance |
On Wed, Dec 2, 2009 at 2:17 PM, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
>
> I'm confused. I think you've only shown us two query plans, so it's
> hard to judge what's going on here in the two cases you haven't shown.
> Also, you haven't shown the EXPLAIN ANALYZE output, so it's a bit
> tricky to judge what is really happening.
I will provide all the explain analyze.
But considering that the request with limit 5 take more than an half
hour (i don't know how much exactly), it will take some times.
See you soon :)
--
Laurent "ker2x" Laborde
Sysadmin & DBA at http://www.over-blog.com/
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