Re: How to use the BRIN index properly? - Mailing list pgsql-general

From Siddharth Jain
Subject Re: How to use the BRIN index properly?
Date
Msg-id CAPqV3pQCPas3CzMx-Syed_-Kzn_Vsq=b=H=_SgoXbFW58-mmWA@mail.gmail.com
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In response to How to use the BRIN index properly?  (Siddharth Jain <siddhsql@gmail.com>)
Responses Re: How to use the BRIN index properly?
List pgsql-general
our insertion order is of course != index order otherwise the question would have been trivial.
we use postgres 14

On Wed, Feb 8, 2023 at 11:51 AM Siddharth Jain <siddhsql@gmail.com> wrote:
Hello,

We have large tables with billions of rows in them and want to take advantage of the BRIN index on them.

Issues we are facing:
  • as I understand, BRIN index is useful only if the data is stored in index order. As an example we want to create a composite BRIN index on 3 columns - integers and strings (varchar). How can we tell Postgres to store data in index order as new records are inserted into the database?
  • i understand that turning on autosummarize will keep the index fresh and up-to-date as new records are inserted. is this correct?
Thanks for your help.

S.

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