From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
---|---|
To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Noah Misch <noah(at)leadboat(dot)com>, "Adam, Etienne (Nokia-TECH/Issy Les Moulineaux)" <etienne(dot)adam(at)nokia(dot)com>, PostgreSQL Bugs <pgsql-bugs(at)postgresql(dot)org>, "Duquesne, Pierre (Nokia-TECH/Issy Les Moulineaux)" <pierre(dot)duquesne(at)nokia(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: [BUGS] [postgresql 10 beta3] unrecognized node type: 90 |
Date: | 2017-08-16 13:16:23 |
Message-ID: | CA+TgmoYj=H693FHVd3D_qQA+mMepsCndALw2Qo-rM+POg9et0w@mail.gmail.com |
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On Tue, Aug 15, 2017 at 9:46 AM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> How big a deal do we think test coverage is? It looks like
> ExecReScanGatherMerge is identical logic to ExecReScanGather,
> which *is* covered according to coverage.postgresql.org, but
> it wouldn't be too surprising if they diverge in future.
>
> I should think it wouldn't be that expensive to create a test
> case, if you already have test cases that invoke GatherMerge.
> Adding a right join against a VALUES clause with a small number of
> entries, and a non-mergeable/hashable join clause, ought to do it.
I chatted with Amit about this -- he's planning to look into it. I
assume we'll hear from him tomorrow about this, but for official
status update purposes I'll set a next-update date of one week from
today (August 23rd).
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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