agora inbox for pgsql-sql@postgresql.org  

help / color / mirror / Atom feed

From: Anton Ananich <anton.ananich@gmail.com>
To: pgsql-sql@postgresql.org
Subject: Custom sort order with jsonb key
Date: Thu, 23 Jun 2016 21:38:54 +0300
Message-ID: <1BFCD444-70DD-4A32-B2AB-CEFCC2922419@gmail.com> (raw)
List-Unsubscribe: <mailto:majordomo@postgresql.org?body=unsub%20pgsql-sql>

Dear colleagues,

I have a table in PostgreSQL with some data:

create table FOO (
    key jsonb
);

insert into FOO(key) values ('[2014]');
insert into FOO(key) values ('[2015]');
insert into FOO(key) values ('[2016]');
insert into FOO(key) values ('[2014, 2]');
insert into FOO(key) values ('[2014, 2, 3]');
insert into FOO(key) values ('[2014, 3]');
insert into FOO(key) values ('[2014,2,4]');
insert into FOO(key) values ('[2014, 2,4]');
insert into FOO(key) values ('[2014,3,13]');
insert into FOO(key) values ('[2014, 2, 15]');

And I try to sort these rows like that:

SELECT key FROM FOO order by key;

The result is:

[2014]
[2015] <==
[2016] <==
[2014, 2]
[2014, 3] <==
[2014, 2, 3]
[2014, 2, 4]
[2014, 2, 4]
[2014, 2, 15]
[2014, 3, 13]

But what I need is

[2014]
[2014, 2]
[2014, 2, 3]
[2014, 2, 4]
[2014, 2, 4]
[2014, 2, 15]
[2014, 3] <==
[2014, 3, 13]
[2015] <==
[2016] <==

is there a way to achieve it?

Regards,
Anthony Ananich
http://ananich.pro <http://ananich.pro/;

view thread (4+ messages)  latest in thread

Message-ID: <1BFCD444-70DD-4A32-B2AB-CEFCC2922419@gmail.com>
Permalink:  ../1BFCD444-70DD-4A32-B2AB-CEFCC2922419@gmail.com/
Also on:    postgresql.org/message-id/1BFCD444-70DD-4A32-B2AB-CEFCC2922419@gmail.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-sql@postgresql.org
  Cc: anton.ananich@gmail.com
  Subject: Re: Custom sort order with jsonb key
  In-Reply-To: <1BFCD444-70DD-4A32-B2AB-CEFCC2922419@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