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


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