Re: Forcing Postgres to Execute a Specific Plan

Not really.  It was decided long ago that in that way madness lies.

OTOH, there are ways to tune the behaviour through changes to
random_page_cose, cpu_xxx_cost and effective_cache_size settings.

Then there's the mallet to the forebrain that are the set
enable_nestloop=off type settings.  They work, but they shouldn't be
your first line of attack so much as a troubleshooting tool to figure
out what pgsql might be getting wrong.

On Mon, Jun 2, 2008 at 1:43 PM, John Cieslewicz <johnc@cs.columbia.edu> wrote:
> I'm doing some performance experiments with postgres (8.3.1) and would like
> to force postgres to execute a particular query plan. Is there a
> straightforward way to specify a query plan to postgres either interactively
> or programatically?
>
> Thanks.
>
> John Cieslewicz.
>
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