Re: Turn a json column into a table

On Sat, 19 Feb 2022 at 22:47, Rob Sargent <robjsargent(at)gmail(dot)com> wrote:

> On 2/19/22 15:40, Shaozhong SHI wrote:
>
>
>
> On Tue, 15 Feb 2022 at 08:37, Karsten Hilbert <Karsten(dot)Hilbert(at)gmx(dot)net>
> wrote:
>
>> Hi Ion,
>>
>> > there seems to be an example in the archives
>> >
>> https://www.postgresql.org/message-id/20180526150323.GB28324%40momjian.us
>>
>> Many thanks ! I shall indeed go Read The Fine Manual now.
>>
>> In case I might have further questions I would like to come back,
>> post my work and understanding, and ask for specific guidance on
>> the aspects I can't fully solve myself.
>>
>> Thanks again,
>> Karsten
>>
>>
> In the JSON column, one key can be seen present as other keys. But, when
> use json_object_keys, it did not turn up at all.
>
> Is there a way to cast json column as text, and extract values from text?
>
>
> Nothing in https://www.postgresql.org/docs/14/functions-json.html helps?
>

That is very odd. That key and vale disappeared when the column casted as
text.

Regards,

David