Re: json_object returning jsonb reuslt different from returning json, returning text

seems it's a bug around value 0.

SELECT JSON_OBJECTAGG(k: v ABSENT ON NULL WITH UNIQUE KEYS RETURNING jsonb)
FROM (VALUES (1, 1), (10, NULL),(4, null), (5, null),(6, null),(2, 2))
foo(k, v);
return:
{"1": 1, "2": 2}

SELECT JSON_OBJECTAGG(k: v ABSENT ON NULL WITH UNIQUE KEYS RETURNING jsonb)
FROM (VALUES (1, 1), (0, NULL),(4, null), (5, null),(6, null),(2, 2))
foo(k, v);

return
{"0": null, "1": 1, "2": 2}

On Mon, Apr 25, 2022 at 10:41 AM alias <postgres(dot)rocks(at)gmail(dot)com> wrote:

> select json_objectagg(
> k:v absent on null with unique keys returning text )
> from (
> values(1,1),(0, null),(3, null),(2,2),(4,null)
> ) foo(k, v);
>
> return
>
> json_objectagg
> ----------------------
> { "1" : 1, "2" : 2 }
> --------------------
>
> select json_objectagg(k:v absent on null with unique keys)
> from (
> values(1,1),(0, null),(3, null),(2,2),(4,null)
> ) foo(k, v);
>
> return
>
> json_objectagg ---------------------- { "1" : 1, "2" : 2 }
>
> *But*
>
> select json_objectagg(
> k:v absent on null with unique keys returning jsonb )
> from (
> values(1,1),(0, null),(3, null),(2,2),(4,null)
> ) foo(k, v);
>
> return
> json_objectagg ----------------------------- {"0": null, "1": 1, "2": 2}
>
> the last query "returning jsonb" should be { "1" : 1, "2" : 2 } ?
>
> version:
>
>> PostgreSQL 15devel (Ubuntu
>> 15~~devel~20220407.0430-1~713.git79b716c.pgdg20.04+1) on
>> x86_64-pc-linux-gnu,
>> compiled by gcc (Ubuntu 9.4.0-1ubuntu1~20.04.1) 9.4.0, 64-bit
>
>