Re: Proposal to introduce a shuffle function to intarray extension - Mailing list pgsql-hackers

Am 18.07.22 um 00:46 schrieb Tom Lane:
> 
> This does not look particularly idiomatic, or even type-safe.  What you
> should have done was use deconstruct_array to get an array of Datums and
> isnull flags, then shuffled those, then used construct_array to build the
> output.
> 
> (Or, perhaps, use construct_md_array to replicate the input's
> precise dimensionality.  Not sure if anyone would care.)
> 
>             regards, tom lane

deconstruct_array() would destroy the arrays dimensions. I would expect 
that shuffle() only shuffles the first dimension and keeps the inner 
arrays intact.

Martin