| From: | David Rowley <dgrowleyml(at)gmail(dot)com> |
|---|---|
| To: | Richard Guo <guofenglinux(at)gmail(dot)com> |
| Cc: | cyg0810(at)gmail(dot)com, PostgreSQL mailing lists <pgsql-bugs(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: BUG #17067: FailedAssertion at castNodeImpl |
| Date: | 2021-06-21 11:13:43 |
| Message-ID: | CAApHDvpbbF=KjstdD4Mq_XN2PS92PP3fAwFN+8ao8aF+dVvfsA@mail.gmail.com |
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| Lists: | pgsql-bugs |
On Mon, 21 Jun 2021 at 22:10, Richard Guo <guofenglinux(at)gmail(dot)com> wrote:
> On Mon, Jun 21, 2021 at 5:48 PM David Rowley <dgrowleyml(at)gmail(dot)com> wrote:
>> I'm quite surprised that we don't have a test that picks this up.
>
>
> A distinct group by clause would help to reveal this issue as:
>
> explain select * from t GROUP BY distinct a, rollup(b);
>
> Maybe we can add a test case to cover it.
Since beta2 deadline is looming, I pushed the simple fix for now. I'll
start a thread on hackers to ask the authors of the patch about
additional testing.
Yaoguang, the fix went in as of [1]. Thanks again for the report.
David
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