Hi
čt 6. 1. 2022 v 14:33 odesílatel Andreas Joseph Krogh <andr...@visena.com>
napsal:
> På torsdag 06. januar 2022 kl. 14:29:12, skrev David G. Johnston <
> david.g.johns...@gmail.com>:
>
> [..]
> The fact is that the ‘ - - > ‘ operator gives you the needed output.
>
> David J.
>
>
> Yeah, I think that's the correct answer for this use-case.
>
It is true that some other casting function is missing. I am not sure if
this is part of ANSI/SQL json support.
Now, you can use helper function
CREATE OR REPLACE FUNCTION public.to_text(jsonb)
RETURNS text
LANGUAGE sql
AS $function$
select jsonb_array_element_text($1, 0)
$function$
postgres=# select to_text((jsonb '{"a":"Ahoj"}')['a']);
┌─────────┐
│ to_text │
╞═════════╡
│ Ahoj │
└─────────┘
(1 row)
Regards
Pavel
>
> --
> *Andreas Joseph Krogh*
> CTO / Partner - Visena AS
> Mobile: +47 909 56 963
> andr...@visena.com
> www.visena.com
> <https://www.visena.com>
>
>
