pg.ddx.io  pgsql-hackers@postgresql.org mailing list archive  

help / color / mirror / Atom feed
From: Justin Pryzby <pryzby@telsasoft.com>
To: Tomas Vondra <tomas.vondra@enterprisedb.com>
Cc: Dean Rasheed <dean.a.rasheed@gmail.com>
Cc: pgsql-hackers@postgresql.org
Subject: Re: PoC/WIP: Extended statistics on expressions
Date: Thu, 21 Jan 2021 20:29:58 -0600
Message-ID: <20210122022958.GC27167@telsasoft.com> (raw)
In-Reply-To: <f865af90-c19c-769e-8c65-19692e245479@enterprisedb.com>
References: <20210108023537.GA19743@telsasoft.com>
	<d7c93270-20a0-93cb-f15e-46d7b51b35c1@enterprisedb.com>
	<5305f9cf-3927-06c4-cd5b-e46cbc58bc7f@enterprisedb.com>
	<20210116232208.GB8560@telsasoft.com>
	<2f2a3b3b-93e4-723f-144e-bc21f10d6b61@enterprisedb.com>
	<20210118045331.GF8560@telsasoft.com>
	<CAEZATCVnQccV_Z7AuvbvquaOYxUj+cVFk48pPGASYHFjXWgW5g@mail.gmail.com>
	<3f20da4d-89dc-0912-98d2-b6f0ef06c87f@enterprisedb.com>
	<CAEZATCUuj5FPjtOU2=7Z2pTC8LEvrf79+Go7R8yQ+eE0ezfgfQ@mail.gmail.com>
	<f865af90-c19c-769e-8c65-19692e245479@enterprisedb.com>

This already needs to be rebased on 55dc86eca.

And needs to update rules.out.

And doesn't address this one:

On Sun, Jan 17, 2021 at 10:53:31PM -0600, Justin Pryzby wrote:
> | postgres=# CREATE TABLE t(i int);
> | postgres=# CREATE STATISTICS s2 ON (i+1) ,(i+1+0) FROM t;
> | postgres=# \d t
> |                  Table "public.t"
> |  Column |  Type   | Collation | Nullable | Default 
> | --------+---------+-----------+----------+---------
> |  i      | integer |           |          | 
> | Indexes:
> |     "t_i_idx" btree (i)
> | Statistics objects:
> |     "public"."s2" (ndistinct, dependencies, mcv) ON  FROM t
> 
> on ... what ?

-- 
Justin





view thread (107+ messages)  latest in thread

Message-ID: <20210122022958.GC27167@telsasoft.com>
Permalink:  ../20210122022958.GC27167@telsasoft.com/
Also on:    postgresql.org/message-id/20210122022958.GC27167@telsasoft.com

 · 

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: pgsql-hackers@postgresql.org
  Cc: pryzby@telsasoft.com, tomas.vondra@enterprisedb.com, dean.a.rasheed@gmail.com
  Subject: Re: PoC/WIP: Extended statistics on expressions
  In-Reply-To: <20210122022958.GC27167@telsasoft.com>

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

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