Re: Postgres jsonb data

From: Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at>
To: stephen(at)infowerks(dot)com, pgsql-docs(at)lists(dot)postgresql(dot)org
Subject: Re: Postgres jsonb data
Date: 2025-05-21 06:12:06
Message-ID: 9314cf1402ee27d287b24d3a7622f7dc78d6ea34.camel@cybertec.at
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On Tue, 2025-05-20 at 13:41 +0000, PG Doc comments form wrote:
> Page: https://www.postgresql.org/docs/14/datatype-json.html
>
> Documentation suggests that a json type of null doesn't turn into anything
> when read into a jsonb, because the json type of null doesn't correspond to
> the postgres type of NULL. We've found that in fact it's treated the same
> as the string "null" - and the documentation probably should reflect this
> edge case.

I see them treated differently:

SELECT 'null'::jsonb IS NULL;
?column?
══════════
f
(1 row)

Can you show examples of what you mean?

Yours,
Laurenz Albe

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