Re: Should we support casting between ARRAYs and JSON(B)?

[Marcos Pegoraro]

Em seg., 28 de out. de 2024 às 14:06, Aleksander Alekseev <
aleksan...@timescale.com> escreveu:

> =# select '[1,2,3]' :: jsonb :: int[];
>

I think would be useful, cast int[] to json is not hard

select to_json('{1,5,9,12}'::int[]);

but json array to int[] is not that easy.

select js,
       js->'items',
       translate(js->>'items','[]','{}')::int[],
       5 = any(translate(js->>'items','[]','{}')::int[])

       --This one would be cool, doesn't need translate or any other trick
       --5 = any(js->'items'::int[])

from (select jsonb_build_object('items','{1,5,9,12}'::int[])) x(js);

So, if you cast one way, you can do both ways.

regards
Marcos