Re: Indexing - comparison of tree structures

From: Sascha Kuhl <yogidabanli(at)gmail(dot)com>
To: pgsql-hackers(at)postgresql(dot)org
Subject: Re: Indexing - comparison of tree structures
Date: 2019-05-27 10:40:07
Message-ID: CAPvVvKBYEkYCc6nHMqLPLhvL38HptUyy-izNKyvXVy8S=ubDSQ@mail.gmail.com
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Where I can I find research on trees and indexing related to postgresql?

Sascha Kuhl <yogidabanli(at)gmail(dot)com> schrieb am Mo., 27. Mai 2019, 11:14:

> Can you bring me to the research showing b-tree is equally performant? Is
> postgres taking this research into account?
>
> Jonah H. Harris <jonah(dot)harris(at)gmail(dot)com> schrieb am Sa., 25. Mai 2019,
> 02:15:
>
>> T-tree (and variants) are index types commonly associated with in-memory
>> database management systems and rarely, if-ever, used with on-disk
>> databases. There has been a lot of research in regard to more modern cache
>> conscious/oblivious b-trees that perform equally or better than t-tree.
>> What’s the use-case?
>>
>> On Fri, May 24, 2019 at 5:38 AM Sascha Kuhl <yogidabanli(at)gmail(dot)com>
>> wrote:
>>
>>> Hi,
>>>
>>> I compared two data structures realistically by time, after estimating
>>> big O. T-tree outperforms b-tree, which is commonly used, for a medium size
>>> table. Lehmann and Carey showed the same, earlier.
>>>
>>> Can you improve indexing by this?
>>>
>>> Understandably
>>>
>>> Sascha Kuhl
>>>
>> --
>> Jonah H. Harris
>>
>>

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