Re: V18 change on EXPLAIN ANALYZE

From: Maciek Sakrejda <maciek(at)pganalyze(dot)com>
To: Ilia Evdokimov <ilya(dot)evdokimov(at)tantorlabs(dot)com>
Cc: maciek(at)sakrejda(dot)org, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Robert Haas <robertmhaas(at)gmail(dot)com>, Marcos Pegoraro <marcos(at)f10(dot)com(dot)br>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: V18 change on EXPLAIN ANALYZE
Date: 2025-10-30 20:35:27
Message-ID: CADXhmgS3C963pNk5NfwPE-ZYo=0jBHxkOHbpsbhd=+QYMRonEA@mail.gmail.com
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Thanks for the feedback!

On Thu, Oct 30, 2025 at 7:35 AM Ilia Evdokimov
<ilya(dot)evdokimov(at)tantorlabs(dot)com> wrote:
> 1. I think the mention of VERBOSE might be unnecessary, since this is already covered in parallel.sgml, section 'Parallel Plan Tips'. That section explicitly says that EXPLAIN (ANALYZE, VERBOSE) shows per-worker statistics.

Okay. I think the EXPLAIN docs are a better place for that info, but
if that's the consensus, I can update the patch.

> 2. Instead of introducing another query, why not reuse the one already shown earlier in the same section, just with the GUCs adjusted to make it parallel?

Sure, I can do that. I thought a more concise example would make it
clearer to see the parallelism-related bits.

And to answer my own question, I noticed another example has `SET
enable_seqscan TO off;`, so I'll add the GUCs.

Thanks,
Maciek

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