Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org> writes:
> I'm wondering why don't we expose the array_map() function to the SQL
> level.
It requires some notion of "reference to function", which doesn't really
exist in SQL. (Please don't say you're going to pass it a function
OID.)
> As it happens, I need to use it in the pg_dump support for TOAST
> reloptions.
Maybe something involving
ARRAY(SELECT foo(x) FROM UNNEST(arrayvariable) x)
regards, tom lane