| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | Amit Langote <Langote_Amit_f8(at)lab(dot)ntt(dot)co(dot)jp> |
| Cc: | David Rowley <david(dot)rowley(at)2ndquadrant(dot)com>, Yuzuko Hosoya <hosoya(dot)yuzuko(at)lab(dot)ntt(dot)co(dot)jp>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: Runtime pruning problem |
| Date: | 2019-04-18 18:13:56 |
| Message-ID: | CA+TgmoZD3=Khv1BrLPYDNc3btq4=go-RyXzhETBHw4gZLDjiRQ@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Tue, Apr 16, 2019 at 10:49 PM Amit Langote
<Langote_Amit_f8(at)lab(dot)ntt(dot)co(dot)jp> wrote:
> Maybe, not show them? That may be a bit inconsistent, because the point
> of VERBOSE is to the targetlist among other things, but maybe the users
> wouldn't mind not seeing it on such empty Append nodes. OTOH, they are
> more likely to think seeing a subplan that's clearly prunable as a bug of
> the pruning logic.
Or maybe we could show them, but the Append could also be flagged in
some way that indicates that its child is only a dummy.
Everything Pruned: Yes
Or something.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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