Re: parallel sequential scan returns extraneous rows

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Michael Day <blake(at)rcmail(dot)com>
Cc: pgsql-bugs(at)postgresql(dot)org
Subject: Re: parallel sequential scan returns extraneous rows
Date: 2016-11-30 00:01:16
Message-ID: 14356.1480464076@sss.pgh.pa.us
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Michael Day <blake(at)rcmail(dot)com> writes:
> I was able to reproduce with this set of data.

Ah, thanks for the test case! Looks like the handling of
JOIN_UNIQUE_INNER cases for parallel plans is completely confused ---
it forgot about needing to unique-ify the inner rel, and I'm rather
surprised it didn't trip over some Asserts while at it.

Will fix, thanks.

regards, tom lane

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