Re: proposal: jsonb_populate_array

po 14. 8. 2023 v 15:09 odesílatel Erik Rijkers <er@xs4all.nl> napsal:

> Op 8/14/23 om 14:51 schreef Pavel Stehule:> po 14. 8. 2023 v 11:32
> odesílatel Alvaro Herrera <alvherre@alvh.no-ip.org>
>  > with proposed function I can write
>  >
>  > select jsonb_populate_array(null:date[],
>  > '["2023-07-13","2023-07-14"]'::jsonb)
>  >
> Not yet committed, but outstanding
> SQL/JSON patches (v11) will let you do:
>
> select json_query(
>      '["2023-07-13", "2023-07-14"]'::jsonb
>    , '$' returning date[]
> );
>         json_query
> -------------------------
>   {2023-07-13,2023-07-14}
> (1 row)
>
> That's (more or less) what you want, no?
>

Yes, the functionality is exactly the same, but still maybe for  completeness
the function json_populate_array can be nice.

In old API the transformations between json and row/record types is well
covered, but for array, only direction array->json is covered

I think so this can be +/- 40 lines of C code





> Let's hope it gets submitted 17-ish, anyway
>
> Erik
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