json_object returning jsonb reuslt different from returning json, returning text - Mailing list pgsql-hackers

From alias
Subject json_object returning jsonb reuslt different from returning json, returning text
Date
Msg-id CAJA4AWQ_XbSmsNbW226UqNyRLJ+wb=iQkQMj77cQyoNkqtf=2Q@mail.gmail.com
Whole thread Raw
Responses Re: json_object returning jsonb reuslt different from returning json, returning text
List pgsql-hackers
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

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