Re: GIN Indexes: Extensibility

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От Paul Jungwirth
Тема Re: GIN Indexes: Extensibility
Дата
Msg-id 5ce6efd7-c6dc-2dfd-bc37-c797ad6c9d46@illuminatedcomputing.com
обсуждение исходный текст
Ответ на Re: GIN Indexes: Extensibility  (Vick Khera <vivek@khera.org>)
Ответы Re: GIN Indexes: Extensibility  (Anton Ananich <anton.ananich@gmail.com>)
Список pgsql-general
On 07/27/2016 07:44 AM, Vick Khera wrote:
> On Wed, Jul 27, 2016 at 3:28 AM, Anton Ananich <anton.ananich@gmail.com> wrote:
>> In my situation this order is invalid. Obviously, year 2016 should go after
>> 2014, like that:
>
> I think you expect JSONB to sort differently than it does. I cannot
> imagine what a "natural" ordering of arbitrary JSON objects is.

FWIW, Postgres arrays do sort in the way he's expecting:

paul=# create table t (id integer, v integer[]);
CREATE TABLE
paul=# insert into t values (1, array[2014]), (2, array[2014, 1]), (3,
array[2016]);
INSERT 0 3
paul=# select * from t order by v;
  id |    v
----+----------
   1 | {2014}
   2 | {2014,1}
   3 | {2016}
(3 rows)

So maybe convert to an array before sorting?

Paul



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