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From: Tom Lane <tgl@sss.pgh.pa.us>
To: nikolay.nikitin@infowatch.com
cc: pgsql-bugs@postgresql.org
Subject: Re: BUG #14438: Wrong row count in the join plan with unique index
 scan
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Comments: In-reply-to nikolay.nikitin@infowatch.com
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Date: Tue, 29 Nov 2016 18:07:45 -0500
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nikolay.nikitin@infowatch.com writes:
> I execute select with "in" condition on the empty table.
> This select works with wrong plan. 
> I think the wrong plan is chosen becose the postgres optimizer incorrectly
> calculates row count in the right plan.

I've pushed a patch that should improve matters for such cases.
Thanks for the report!

			regards, tom lane


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