Re: multivariate statistics (v19)

From: Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>
To: Amit Langote <Langote_Amit_f8(at)lab(dot)ntt(dot)co(dot)jp>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>
Cc: Dilip Kumar <dilipbalaut(at)gmail(dot)com>, Dean Rasheed <dean(dot)a(dot)rasheed(at)gmail(dot)com>, Heikki Linnakangas <hlinnaka(at)iki(dot)fi>, Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Tatsuo Ishii <ishii(at)postgresql(dot)org>, David Steele <david(at)pgmasters(dot)net>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Petr Jelinek <petr(at)2ndquadrant(dot)com>, Jeff Janes <jeff(dot)janes(at)gmail(dot)com>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: multivariate statistics (v19)
Date: 2017-01-31 16:10:24
Message-ID: 2b6afa80-aa4a-0ae2-e558-b5d58cff8cfa@2ndquadrant.com
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On 01/31/2017 07:52 AM, Amit Langote wrote:
> On 2017/01/31 6:57, Tomas Vondra wrote:
>> On 01/30/2017 09:37 PM, Alvaro Herrera wrote:
>>> Looks good to me. I don't think we need to keep the names very short --
>>> I would propose "standistinct", "stahistogram", "stadependencies".
>>>
>>
>> Yeah, I got annoyed by the short names too.
>>
>> This however reminds me that perhaps pg_mv_statistic is not the best name.
>> I know others proposed pg_statistic_ext (and pg_stats_ext), and while I
>> wasn't a big fan initially, I think it's a better name. People generally
>> don't know what 'multivariate' means, while 'extended' is better known
>> (e.g. because Oracle uses it for similar stuff).
>>
>> So I think I'll switch to that name too.
>
> +1 to pg_statistics_ext. Maybe, even pg_statistics_extended, however
> being that verbose may not be warranted.
>

Yeah, I think pg_statistic_extended / pg_stats_extended seems fine.

regards

--
Tomas Vondra http://www.2ndQuadrant.com
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

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