Re: More stable query plans via more predictable column statistics

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
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: 2015-12-09 02:18:29
Message-ID: CA+Tgmob9P5wcTcm78q=mRwzaPT9ZB2CfcRHZpe26C-p_orbJ_g@mail.gmail.com
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On Fri, Dec 4, 2015 at 12:53 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> 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.

Well, OK, but I don't really see how that particular bit is anything
other than a bug fix.

--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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