Re: Reproducing query plans in empty database: can I just copy stats and settings?

From: Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com>
To: Guyren Howe <guyren(at)gmail(dot)com>, "pgsql-general(at)lists(dot)postgresql(dot)org" <pgsql-general(at)lists(dot)postgresql(dot)org>
Subject: Re: Reproducing query plans in empty database: can I just copy stats and settings?
Date: 2019-07-29 19:25:53
Message-ID: 7e758c6c-6e6f-d6b4-6ce5-55ac2bb95586@aklaver.com
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On 7/29/19 12:07 PM, Guyren Howe wrote:
> I work with Protected Health Information so have restricted access to an
> important database.
>
> I would like to look into index and query changes for that database. It
> occurs to me that if I was able to reproduce the statistics and cost
> settings for the database, then Explain would produce identical results
> to the production database.
>
> Can do this? Any other advice?

So what defines restricted access?

If you can't see/use the data in the production database in your test
database I'm not sure how copying the statistics/cost settings is going
to help.

--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com

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