Re: Minmax indexes

From: Claudio Freire <klaussfreire(at)gmail(dot)com>
To: Simon Riggs <simon(at)2ndquadrant(dot)com>
Cc: Robert Haas <robertmhaas(at)gmail(dot)com>, Nicolas Barbier <nicolas(dot)barbier(at)gmail(dot)com>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Josh Berkus <josh(at)agliodbs(dot)com>, Heikki Linnakangas <hlinnakangas(at)vmware(dot)com>, Andres Freund <andres(at)2ndquadrant(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Minmax indexes
Date: 2014-08-07 14:19:03
Message-ID: CAGTBQpYxzMdONt4gk0V8XA2jJcD4uXSXXtWtWt7SsZP6esGS7A@mail.gmail.com
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On Thu, Aug 7, 2014 at 11:16 AM, Simon Riggs <simon(at)2ndquadrant(dot)com> wrote:
> On 7 August 2014 14:53, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
>> On Wed, Aug 6, 2014 at 4:06 PM, Nicolas Barbier
>> <nicolas(dot)barbier(at)gmail(dot)com> wrote:
>>> 2014-08-06 Claudio Freire <klaussfreire(at)gmail(dot)com>:
>>>
>>>> So, I like blockfilter a lot. I change my vote to blockfilter ;)
>>>
>>> +1 for blockfilter, because it stresses the fact that the "physical"
>>> arrangement of rows in blocks matters for this index.
>>
>> I don't like that quite as well as summary, but I'd prefer either to
>> the current naming.
>
> Yes, "summary index" isn't good. I'm not sure where the block or the
> filter part comes in though, so -1 to "block filter", not least
> because it doesn't have a good abbreviation (bfin??).

Block filter would refer to the index property that selects blocks,
not tuples, and it does so through a "filter function" (for min-max,
it's a range check, but for other opclasses it could be anything).

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