Re: jsonb_array_elements_recursive()

On Sun, Feb 7, 2021, at 17:08, Pavel Stehule wrote:

>>ne 7. 2. 2021 v 16:59 odesílatel Joel Jacobson <joel@compiler.org> napsal:

>>

>>SELECT jsonb_unnest('[[3,2],[1,4]]'::jsonb);

>>jsonb_unnest

>>--------------------

>>3

>>2

>>1

>>4

>>(4 rows)

>

>It  has  sense. Maybe it should return two columns - first path to value, and second with value. It can be used like some >"reader"

Thanks for thinking about this.

I would expect jsonb_unnest() to have the same semantics as unnest(), but returning SETOF jsonb.

jsonb_unnest() implemented in C would of course be much more performant than the PL/pgSQL PoC.

And I think performance could be important for such a function,

so I think we should be careful adding extra complexity to such a function,

unless it can be demonstrated it is needed for a majority of cases.

/Joel