From: | Anton Ananich <anton(dot)ananich(at)gmail(dot)com> |
---|---|
To: | pgsql-sql(at)postgresql(dot)org |
Subject: | Custom sort order with jsonb key |
Date: | 2016-06-23 18:38:54 |
Message-ID: | 1BFCD444-70DD-4A32-B2AB-CEFCC2922419@gmail.com |
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Thread: | |
Lists: | pgsql-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/>
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