Re: missing something about json syntax

Ok, thanks.

Le jeu. 20 avr. 2023 à 22:42, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> a écrit :

> Marc Millas <marc(dot)millas(at)mokadb(dot)com> writes:
> > but it doesnt explain how postgres is able to put a scalar in a json or
> > jsonb column without pb:
> > I don't understand how this ('"{\"t\"}"') can be considered a valid
> enough
> > json to be inserted in a json column
> > and at the same time invalid for all other json uses.
>
> That's a bare string (it's not an object). That's valid JSON per
> RFC 7159:
>
> JSON can represent four primitive types (strings, numbers, booleans,
> and null) and two structured types (objects and arrays).
> ...
> A JSON text is a serialized value. Note that certain previous
> specifications of JSON constrained a JSON text to be an object or an
> array.
>
> However, there certainly are some operations that require the top-level
> value to be an object or array.
>
> regards, tom lane
>