public inbox for [email protected]  

help / color / mirror / Atom feed

From: Igor Korot <[email protected]>
To: Laurenz Albe <[email protected]>
Cc: David Barbour <[email protected]>
Cc: Jon Zeppieri <[email protected]>
Cc: Christophe Pettus <[email protected]>
Cc: Adrian Klaver <[email protected]>
Cc: pgsql-generallists.postgresql.org <[email protected]>
Subject: Re: Get info about the index
Date: Tue, 29 Jul 2025 06:46:53 -0500
Message-ID: <CA+FnnTyFwR_Xk8pEhasG7GGWAzFk9e4tCBdX36G6H1-=uJxrfg@mail.gmail.com> (raw)
In-Reply-To: <[email protected]>
References: <CA+FnnTw2ouEQKSKzQ_SNo8efWE8wEqjr9Ux-F-wbR+y=Pn6bGg@mail.gmail.com>
	<[email protected]>
	<CA+FnnTyKb0cLp9GF3YENoBZ4LVW3db_RSGR99BPFnA4BZtc8kQ@mail.gmail.com>
	<[email protected]>
	<CA+FnnTy8bdXxFZBmFfm1oNMQLVxL-+UmkX8EecbLB0MehX8gFw@mail.gmail.com>
	<CAKfDxxw=4Vax5Oq0apoAE=RkzNgHwvHzKX1ejE6z7n7_vtGBUQ@mail.gmail.com>
	<CAEMHB2QQpfxjbqbyB6zy+TMv9zf42tavLuYUSxDXgyZEaq46Xg@mail.gmail.com>
	<[email protected]>

Hi, guys,

On Mon, Jul 28, 2025 at 10:13 AM Laurenz Albe <[email protected]> wrote:
>
> On Mon, 2025-07-28 at 08:19 -0500, David Barbour wrote:
> > Couple of suggestions.  You might try ChatGPT.
>
> Please don't be insulting.  He asked for real information.

I finally formulate my google request and got this:

https://www.google.com/search?q=get+the+index+field+info+postgresql&safe=active&sca_esv=3201...

SELECT
    t.relname AS table_name,
    i.relname AS index_name,
    a.attname AS column_name
FROM
    pg_class t,
    pg_class i,
    pg_index ix,
    pg_attribute a
WHERE
    t.oid = ix.indrelid AND
    i.oid = ix.indexrelid AND
    a.attrelid = t.oid AND
    a.attnum = ANY(ix.indkey) AND
    t.relkind = 'r' AND -- 'r' for regular table
    t.relname = 'your_table_name' -- Optional: filter by table name
ORDER BY
    t.relname,
    i.relname,
    a.attnum;

I can build on top of this query, however I have 2 issues:

First and most important one - they are filtering by just table name.
How can I filter by the fully qualified name - catalog.schema.table?

Second - how cn I get the partial index condition? Either the whole
WHERE clause (which I will have to parse)
or the broken down one (field, condition {AND|OR} field, condition}?

Thank you.


>
> Yours,
> Laurenz Albe

view thread (11+ messages)  latest in thread

reply

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Reply to all the recipients using the --to and --cc options:
  reply via email

  To: [email protected]
  Cc: [email protected], [email protected], [email protected], [email protected], [email protected], [email protected], [email protected]
  Subject: Re: Get info about the index
  In-Reply-To: <CA+FnnTyFwR_Xk8pEhasG7GGWAzFk9e4tCBdX36G6H1-=uJxrfg@mail.gmail.com>

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

This inbox is served by agora; see mirroring instructions
for how to clone and mirror all data and code used for this inbox