| From: | "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com> |
|---|---|
| To: | "box1805(at)gmail(dot)com" <box1805(at)gmail(dot)com>, "pgsql-docs(at)lists(dot)postgresql(dot)org" <pgsql-docs(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: Analyze on Foreign Data Wrappers - clarification |
| Date: | 2021-10-11 21:35:36 |
| Message-ID: | CAKFQuwas2wXEVUyH3or3vFAZ0AMhnYpV9Aqr2M+1et+NrePPWg@mail.gmail.com |
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| Lists: | pgsql-docs |
On Monday, October 11, 2021, PG Doc comments form <noreply(at)postgresql(dot)org>
wrote:
>
> Foreign tables are analyzed only when explicitly selected.
>
> 2. When I run the analyze command with the FDW table as a parameter
>
>
That
> Also, I am not clear if analyze is run on FDW tables when Automvacuum runs;
> does it run analyze on FDW tables by default.
>
Based on the prior item I would expect no. It would usually have
insufficient data to do otherwise.
I didn’t look hard but aside from this comment about analyze working on
foreign tables, if asked, I find no relevant “why” discussion regarding the
interaction of analyze and foreign tables in the documentation. Frankly,
I’m unsure why it even needs to work at all.
David J.
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