Re: More stable query plans via more predictable column statistics

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Robert Haas <robertmhaas(at)gmail(dot)com>
Cc: "Shulgin, Oleksandr" <oleksandr(dot)shulgin(at)zalando(dot)de>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>, Stefan Litsche <stefan(dot)litsche(at)zalando(dot)de>
Subject: Re: More stable query plans via more predictable column statistics
Date: 2015-12-04 17:53:59
Message-ID: 11085.1449251639@sss.pgh.pa.us
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Robert Haas <robertmhaas(at)gmail(dot)com> writes:
> Still, maybe we should try to sneak at least this much into
> 9.5 RSN, because I have to think this is going to help people with
> mostly-NULL (or mostly-really-wide) columns.

Please no. We are trying to get to release, not destabilize things.

I think this is fine work for leisurely review and incorporation into
9.6. It's not appropriate to rush it into 9.5 at the RC stage after
minimal review.

regards, tom lane

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